Покриття виявлення

Виміряно, а не заявлено.

Кожне число нижче виміряно шляхом внесення реальних пошкоджень у реальні зразкові файли з підрахунком того, що впіймав валідатор — 100 спроб на формат на режим, фіксований seed, сирі дані кожної спроби лежать у репозиторії. Нулі теж публікуються: деякі формати просто не містять жодного механізму цілісності, і ми радше скажемо вам про це прямо, ніж натякатимемо на протилежне.

Sniper — одна випадкова інверсія біта за випадковим зміщенням байта — пошкодження, яке найважче впіймати.
Shotgun — 4 096 послідовних випадкових байтів, перезаписаних за випадковим зміщенням — імітує збійний сектор диска.

Рівень виявлення зростає з кожним випуском: глибокі декодери додаються формат за форматом, і ця таблиця щоразу генерується заново із сирих даних вимірювань.

Нотатки про механізми показані англійською: це глибокі технічні описи, збережені дослівно зі звіту про вимірювання.

Зображення та фото

Формат	Sniper	Shotgun	Платформи	Як це виявляється (або чому це неможливо)
PNG ImagePNG	100%	100%	Linux · macOS · Windows	CRC32 per chunkgenerated_plasma.png · 345 KB · виміряно 2026-03-06
JPEG XL ImageJXL	87%	100%	Linux · macOS · Windows	Container + frame checksumsanimation_icos4d.jxl · 352 KB · виміряно 2026-03-06
WebP ImageWebP	83%	84%	Linux · macOS · Windows	libwebp full decodegoogle_gallery_3.webp · 203 KB · виміряно 2026-03-06
macOS IconICNS	97%	100%	Linux · macOS · Windows	TLV chunk stream; near-total coveragesample.icns · 240 KB · виміряно 2026-04-23
Flash SWFSWF	100%	100%	Linux · macOS · Windows	CWS = zlib wrapper; any flip = zlib CRC failcws_sample.swf · 24 KB · виміряно 2026-04-23
SVG Vector GraphicsSVG	45%	99%	Linux · macOS · Windows	XML parse — almost any corruption breaks the XML grammar.sample.svg · 30 KB · виміряно 2026-04-23
Windows IconICO	63%	70%	Linux · macOS · Windows	Directory entries + embedded PNG/BMP image validation. Multi-resolution ICO has high structural-byte density.sample.ico (multi-res) · 232 KB · виміряно 2026-04-23
QOI ImageQOI	0%	0%	Linux · macOS · Windows	QOI spec has no per-opcode checksum — bit flips in pixel data decode to different-but-valid pixels. Only magic (4 B) and end marker (8 B) are checkable. Fundamental format limit.sample.qoi · 23 KB · виміряно 2026-04-23
JPEG2000 ImageJPEG2K	6%	97%	Структурна валідація у Windows — глибоке декодування JPEG на старті лише для Linux/macOS; оновлення для Windows уже в роботі.	Codestream marker structureballoon_eciRGB_icc.jp2 · 1.9 MB · виміряно 2026-03-06
GIF ImageGIF	9%	100%	Linux · macOS · Windows	LZW decode (shotgun desyncs state); larger animated fixture lifts header-tamper detectionanimated_sample.gif · 400 KB · виміряно 2026-05-27
JPEG ImageJPEG	4%	100%	Структурна валідація у Windows — глибоке декодування JPEG на старті лише для Linux/macOS; оновлення для Windows уже в роботі.	jpegz wrapperDecode (062393f); most single-byte tamper lands in entropy-coded data, which JPEG tolerates by designw3c_exif_420.jpg · 750 KB · виміряно 2026-05-27
OpenEXR HDR ImageEXR	1%	100%	Linux · macOS · Windows	ZIP-compressed EXR — zlib decompress path runs on every scanline block. Shotgun detection perfect; sniper lower than the 26 KB NONE-compressed sample (6%) because structural bytes are a smaller fraction on the larger file. Both paths validated.zip_plasma.exr · 388 KB · виміряно 2026-04-23
Adobe PhotoshopPSD	2%	50%	Linux · macOS · Windows	RLE-compressed PSD — `validatePsdDeep` decodes every scanline. The old RAW-compressed `sample.psd` (0%/7%) is retained; sweep picks the larger RLE one. Measures the strong path that the RAW sample couldn't exercise.rle_plasma.psd · 1.8 MB · виміряно 2026-04-23
HEIC/HEIF ImageHEIC	0%	4%	Linux · macOS · Windows	H.265 CABAC per tile — arithmetic coding absorbs single-bit errors by designsample.heic · 2.9 MB · виміряно 2026-03-06
AVIF ImageAVIF	0%	1%	Linux · macOS · Windows	AV1 OBU + CABAC — same limitationbutterfly.avif · 87 KB · виміряно 2026-03-06
BMP ImageBMP	0%	0%	Linux · macOS · Windows	BMP spec has no data checksums — `bmp_decoder.validateBmp` walks every pixel row proving accessibility but cannot detect bit-flips in pixel bytes. 0/400 at ±0.5% CI. Fundamental format limit.sample.bmp · 921 KB · виміряно 2026-04-23
DPX ImageDPX	0%	0%	Linux · macOS · Windows	Raw pixel; SMPTE 268M spec has no checksumsample.dpx · 1.8 MB · виміряно 2026-03-06
Portable Anymap ImagePAM/PPM	0%	0%	Linux · macOS · Windows	Raw pixel; Netpbm spec has no checksumsample.ppm · 1.8 MB · виміряно 2026-03-06
TGA ImageTGA	25%	100%	Linux · macOS · Windows	Header + image-spec validation catches malformed-byte tamper; tiny 11 KB fixture pushes structural-byte density upsample.tga · 11 KB · виміряно 2026-05-27
TIFF ImageTIFF	0%	0%	Linux · macOS · Windows	IFD structural only — no per-strip checksumpc260001.tif · 937 KB · виміряно 2026-03-06
JBIG2 Bi-level ImageJBIG2	0%	—	Linux · macOS · Windows	Bi-level image stream walk; sniper 0% on truncated sample. Shotgun N/A (sample < 4 KB).annex-h-truncated.jbig2 · 860 B · виміряно 2026-04-25

Камерний RAW

Формат	Sniper	Shotgun	Платформи	Як це виявляється (або чому це неможливо)
Adobe DNG RAWDNG	3%	3%	Структурна валідація у Windows — глибоке декодування JPEG на старті лише для Linux/macOS; оновлення для Windows уже в роботі.	TIFF-based via tiffz strip+tile decode loop + jpegz preview decode; 77 MB sensor dump dilutes detection density per byteL1006922_leica_M11.DNG · 77 MB · виміряно 2026-05-27
Canon CR2 RAWCR2	1%	6%	Структурна валідація у Windows — глибоке декодування JPEG на старті лише для Linux/macOS; оновлення для Windows уже в роботі.	TIFF-based; IFD-walked preview JPEG decoded via libjpeg-turbo (sRAW2 lossless strip filtered out so heuristic keeps the real preview)canon_eos_40d_sraw2.cr2 · 5.8 MB · виміряно 2026-04-25
Nikon RAWNEF	0%	0%	Linux · macOS · Windows	TIFF-based; deep via zigimgnikon_coolscan_iv.nef · 2.2 MB · виміряно 2026-03-06
Sony RAWARW	0%	0%	Linux · macOS · Windows	TIFF-based; deep via zigimgsony_ilce_7s.arw · 6.2 MB · виміряно 2026-03-06
Fuji RAWRAF	0%	1%	Структурна валідація у Windows — глибоке декодування JPEG на старті лише для Linux/macOS; оновлення для Windows уже в роботі.	Fuji; validator decodes the JPEG preview at 0x54/0x58, but preview is ~0.5% of a 208 MB sensor dump — shotgun almost never lands in it. ⚠ See Action Items.DSCF0652_fuji_GFX_100.RAF · 208 MB · виміряно 2026-04-23
NRW	0%	0%	Linux · macOS · Windows	Nikon; dispatched through LibRaw which unpacks sensor data but the format has no per-row checksum. `libraw_unpack_thumb` is not currently wired up — adding it would catch corruption inside the embedded preview JPEG and could lift this to ~15-30% shotgun. Follow-up item.NIKON_COOLPIX_P7100.NRW · 16 MB · виміряно 2026-04-23
Olympus RAWORF	0%	0%	Linux · macOS · Windows	Olympus; validator WARNs on "uncompressed IFD claims but Huffman-compressed data". Structural-only.PB120976.ORF · 14 MB · виміряно 2026-04-23
Pentax RAWPEF	0%	0%	Linux · macOS · Windows	Pentax; TIFF-wrapped. Structural-only.IMGP1754.PEF · 11 MB · виміряно 2026-04-23
Panasonic RAWRW2	0%	0%	Linux · macOS · Windows	Panasonic; TIFF-wrapped. Structural-only.panasonic_16-9.RW2 · 11 MB · виміряно 2026-04-23
Canon CR3 RAWCR3 (Canon)	0%	0%	Linux · macOS · Windows	ISOBMFF-based Canon RAW 3; structural box walk. 15 MB sample at 0%/0% confirms no integrity mechanism beyond structure.sample.CR3 · 15.0 MB · виміряно 2026-04-25

Відео

Формат	Sniper	Shotgun	Платформи	Як це виявляється (або чому це неможливо)
Matroska VideoMKV	100%	100%	Linux · macOS · Windows	CRC32 per EBML cluster — gold standardgenerated_testsrc.mkv · 467 KB · виміряно 2026-03-06
AV1 VideoAV1	5%	100%	Linux · macOS · Windows	OBU structure + tile decodesample.av1 · 7.7 KB · виміряно 2026-03-06
MPEG Transport StreamMPEG-TS	4%	100%	Linux · macOS · Windows	PAT/PMT CRC + continuity countersmpeg2_aac_latm.ts · 145 KB · виміряно 2026-03-06
Standard MIDI FileMIDI	15%	100%	Linux · macOS · Windows	Track framing + delta/event validationfur_elise.mid · 20 KB · виміряно 2026-03-06
Apple ProRes VideoProRes/MOV	5%	78%	Linux · macOS · Windows	ProRes intra-frame DCT decode per frameprores_4444_xq.mov · 6.6 MB · виміряно 2026-03-06
MP4 VideoMP4	0%	66%	Linux · macOS · Windows	H.264 CABAC + AAC decode (sample = `avc1` + AAC)jellyfish_360_10s.mp4 · 1.0 MB · виміряно 2026-03-06
QuickTime VideoMOV	1%	75%	Linux · macOS · Windows	H.264 CABAC decode — new sample generated from public-domain jellyfish footage via ffmpeg. Old MPEG-4 Part 2 sample kept in `sample.mov` but sweep now picks the larger H.264 one.jellyfish_h264.mov · 1.0 MB · виміряно 2026-04-23
WebM VideoWebM (VP9+Opus)	86%	78%	Linux · macOS · Windows	libvpx 1.14.1 full VP9 decode per frame — every frame entropy + DCT decoded via `vpx_codec_decode`. Opus audio CRC provides additional coverage.jellyfish_vp9_opus.webm · 1.8 MB · виміряно 2026-04-24
WebM VideoWebM (VP8)	88%	90%	Linux · macOS · Windows	libvpx 1.14.1 full VP8 decode. Critical: uses `VP8D_GET_FRAME_CORRUPTED` control query after each frame — without it, VP8's built-in error concealment silently patches bit flips. Both sniper and shotgun lift by ~90 points because of this query.jellyfish_360_10s.webm · 1.0 MB · виміряно 2026-04-24
AVI VideoAVI	0%	93%	Структурна валідація у Windows — глибоке декодування JPEG на старті лише для Linux/macOS; оновлення для Windows уже в роботі.	MJPEG per-frame decode via libjpeg-turbo — new sample generated via ffmpeg. Old MPEG-4 Part 2 sample kept in `generated_testsrc.avi` but sweep picks the larger MJPEG one.jellyfish_mjpeg.avi · 8.5 MB · виміряно 2026-04-23
DV VideoDV	0%	0%	Linux · macOS · Windows	DV spec has no checksum; relies on tape physical ECCsample.dv · 360 KB · виміряно 2026-03-06
MPEG Elementary StreamMPEG-ES	0%	0%	Linux · macOS · Windows	Start codes onlysample.m1v · 30 KB · виміряно 2026-03-06
MPEG Program StreamMPEG-1/2	0%	0%	Linux · macOS · Windows	Start codes onlysample.mpg · 16 KB · виміряно 2026-03-06
MPEG-4 Part 2	0%	0%	Linux · macOS · Windows	VOP header parsing tolerates VOP failuresubAVIxvid10.avi · 1.2 MB · виміряно 2026-03-06
RealMediaRM	0%	2%	Linux · macOS · Windows	RealMedia spec has no checksums; structural chunk walk onlysample.rm · 14 KB · виміряно 2026-04-23
Flash VideoFLV	40%	—	Linux · macOS · Windows	Flash Video tag walk; no per-tag CRC. Tiny 33 B sample — sniper hits magic + header bytes. Shotgun N/A (sample < 4 KB).sample.flv · 33 B · виміряно 2026-04-25
MPEG Program StreamMPEG-PS	0%	—	Linux · macOS · Windows	MPEG Program Stream; PES header walk; no CRC. Shotgun N/A (sample < 4 KB).sample.mpg · 2.0 KB · виміряно 2026-04-25
Ogg Video (Theora)Theora (.ogv)	100%	100%	Linux · macOS · Windows	Theora-in-Ogg; libtheora-encoded testsrc (CC0). Ogg page CRC32 catches every probed bit flip in both modes.sample.ogv · 50 KB · виміряно 2026-04-25
IVF Video ContainerVP8 (raw IVF)	0%	0%	Linux · macOS · Windows	IVF container with VP8 frames; structural-only without libvpx wired into the IVF dispatch path. Hand-authored CC0 sample. Detection is fundamentally low until VP8-in-IVF gets the same `VP8D_GET_FRAME_CORRUPTED` query as VP8-in-WebM.sample.ivf · 9 KB · виміряно 2026-04-25

Аудіо

Формат	Sniper	Shotgun	Платформи	Як це виявляється (або чому це неможливо)
Dolby Digital AC-3 AudioAC3	100%	100%	Linux · macOS · Windows	CRC-16 per syncframe. Previous sample `TomorrowNeverDies-...ac3` was malformed (started with bytes 0x84 4F 59 11, not AC3 sync 0B 77) — validator correctly rejected it, so the old 100%/100% number was a false positive from trial inheritance. Removed 2026-04-23; now measured against a genuinely valid sample.Canyon-5.1-48khz-448kbit.ac3 · 2.1 MB · виміряно 2026-04-23
Ogg AudioOGG	100%	100%	Linux · macOS · Windows	CRC32 per OGG pagewikipedia_example.ogg · 104 KB · виміряно 2026-03-06
Dolby Digital Plus AudioE-AC3 (large)	100%	100%	Linux · macOS · Windows	CRC-16 per syncframe (full file, after 2026-03-06 fix)sample1_5.1_640kbps.eac3 · 4.1 MB · виміряно 2026-03-06
Dolby Digital Plus AudioE-AC3 (small)	81%	85%	Linux · macOS · Windows	⚠ Lower coverage on smaller file — reflects frame-size / coverage density, not a bugsample3_5.1_256kbps.eac3 · 1.2 MB · виміряно 2026-03-06
FLAC AudioFLAC	80%	88%	Linux · macOS · Windows	MD5 audio hash + CRC-8/CRC-16 per framegenerated_middle_c.flac · 44 KB · виміряно 2026-03-06
Apple Lossless AudioALAC	1%	100%	Linux · macOS · Windows	Lossless decode — 4KB overwrite kills a framesample.m4a · 18 KB · виміряно 2026-03-06
Opus	1%	35%	Linux · macOS · Windows	OGG page CRC + libopus decodetest_audio_video.webm · 56 KB · виміряно 2026-03-06
M4A AudioAAC (M4A)	4%	31%	Linux · macOS · Windows	MP4 box + AAC syntax decodesample.m4a · 16 KB · виміряно 2026-03-06
AAC-LC Audio (ADTS)AAC (ADTS)	6%	20%	Linux · macOS · Windows	ADTS framing + syntaxsample.aac · 9 KB · виміряно 2026-03-06
MP3 AudioMP3	1%	1%	Linux · macOS · Windows	Frame sync only — MP3 spec has no data CRCgenerated_tone_880hz.mp3 · 50 KB · виміряно 2026-03-06
WAV AudioWAV	0%	2%	Linux · macOS · Windows	RIFF structural; no data checksumsample.wav · 9 KB · виміряно 2026-03-06
AIFF AudioAIFF	0%	1%	Linux · macOS · Windows	IFF structural; no data checksumsample.aiff · 8 KB · виміряно 2026-03-06
CAF AudioCAF	0%	1%	Linux · macOS · Windows	Chunk walk; no data checksumsample.caf · 9 KB · виміряно 2026-03-06
AU/SND AudioAU	0%	0%	Linux · macOS · Windows	Header + raw PCMsample.au · 9 KB · виміряно 2026-03-06
ProTracker ModuleTracker (MOD)	0%	0%	Linux · macOS · Windows	No integrity mechanism in formatotm.mod · 308 KB · виміряно 2026-03-06
Compact Pro ArchiveCPT	100%	100%	Linux · macOS · Windows	CRC per resource fork entry (Compact Pro archive, not audio)sample.cpt · 20 KB · виміряно 2026-03-06
AMR AudioAMR	14%	—	Linux · macOS · Windows	Adaptive Multi-Rate audio; frame-table based, no per-frame CRC. Sniper at 14% reflects sync-byte coverage on a 38 B sample. Shotgun N/A.sample.amr · 38 B · виміряно 2026-04-25
Monkey's AudioAPE (Monkey's Audio)	99%	100%	Linux · macOS · Windows	MAC header + descriptor + per-frame CRC32. Full deep-decode validation now wired via vendored upstream Monkey's Audio SDK 12.73 (`deps/libape/`, BSD-3 since 2023). The validator runs structural rigor first (descriptor, header, seek-table monotonicity, audio-region bounds, field sanity, version range) then decodes every frame and surfaces per-frame CRC32-over-decoded-PCM mismatches via the C-shim `validate_ape_decode_check`. Truncation is caught either by the structural seek-table walk (modern v3980+ has audio_data_length) or by the decoder's sample-count-mismatch path. Synthetic 16 KB corpus is now a real APE encoded by the SDK from white-noise WAV (\`mac -c2000\`), so it actually decodes; sniper hits 99% (only the descriptor MD5 bytes — which are byte-level metadata not bitstream — escape detection in some random flips), shotgun hits 100%. Tested with the in-tree Zig tests + tests/cli/ape_validation (11 PASS).corpus_synthetic.ape · 16 KB · виміряно 2026-04-26
CD+Graphics KaraokeCD+G (Karaoke)	0%	2%	Linux · macOS · Windows	24-byte fixed-size sectors; structural only — no checksum. 0%/2% confirms fundamental format limit.sample.cdg · 14.1 KB · виміряно 2026-04-25
DSDIFF AudioDFF (DSDIFF)	52%	—	Linux · macOS · Windows	DSD audio container; chunk walk only. Tiny 32 B header-only sample. Shotgun N/A.sample.dff · 32 B · виміряно 2026-04-25
DSD Stream FileDSF (DSD)	60%	—	Linux · macOS · Windows	Sony DSD; structural walk. Shotgun N/A.sample.dsf · 88 B · виміряно 2026-04-25
DTS Digital Surround AudioDTS (Digital Surround)	0%	51%	Linux · macOS · Windows	Frame sync + size walk; no per-frame CRC. Shotgun lift from 4 KB overwrite desyncing the frame stream.sample.dts · 369 KB · виміряно 2026-04-25
True Audio (TTA)TTA (True Audio)	97%	—	Linux · macOS · Windows	Per-frame CRC32 catches almost every probed bit flip. Shotgun N/A (sample < 4 KB).sample.tta · 3.1 KB · виміряно 2026-04-25
WavPack AudioWavPack	100%	100%	Linux · macOS · Windows	libwavpack 5.9.0 deep decode: every block decoded to PCM, per-block CRC over decoded samples + checksum sub-block + sample-count drift. Block-checksum sub-block (`ID_BLOCK_CHECKSUM`) catches header/bitstream tampering at open-time; post-decode CRC catches arithmetic drift; truncation surfaces as decoded < expected sample count.corpus_xorshift.wv · 118 KB · виміряно 2026-04-26

Документи та офіс

Формат	Sniper	Shotgun	Платформи	Як це виявляється (або чому це неможливо)
Excel Spreadsheet (97-2003)XLS	22%	96%	Linux · macOS · Windows	BIFF8 records + SST + formulas + cellspoi_formula.xls · 174 KB · виміряно 2026-05-27
Word Document (97-2003)DOC (large)	2%	2%	Linux · macOS · Windows	FIB + 31 fc/lcb pair bounds + CLX piece table. Detection density drops on large docs — body text is most of the file.word95_large.doc · 603 KB · виміряно 2026-03-06
Word Document (97-2003)DOC (small)	—	52%	Linux · macOS · Windows	Same validator, smaller file — shotgun has ~21% chance of hitting FIB/Table/CLX.word97_simple.doc · 19 KB · виміряно 2026-03-06
PDF DocumentPDF	n/a†	n/a†	Linux · macOS · Windows	†Headline numbers are misleading for PDF: detection rate is dominated by which compression filters the document uses for its embedded streams (Flate, DCT/JPEG, JPX/JPEG2000, JBIG2, CCITT), not by the validator. See "PDF detection by stream-filter dominance" subsection below for the breakout table. The exit-code bug from 2026-03-06 was fixed in commit `c304f36` (2026-04-23, Action Item #1).(varies — see breakout) · varies · виміряно 2026-04-27
PowerPoint (97-2003)OLE2 (PPT)	0%	0%	Linux · macOS · Windows	FAT/directory structural onlysample.ppt · 912 KB · виміряно 2026-03-06
Adobe InDesign DocumentInDesign	1%	73%	Linux · macOS · Windows	Page structure.sample.indd · 4 KB · виміряно 2026-03-06
Word Document (OOXML)DOCX	87%	100%	Linux · macOS · Windows	OOXML = ZIP with per-entry CRC32. Sample replaced 2026-04-23 from Apache 2.0 Tika test corpus.sample.docx (Tika `testWORD.docx`) · 13 KB · виміряно 2026-04-23
Excel Spreadsheet (OOXML)XLSX	82%	100%	Linux · macOS · Windows	OOXML = ZIP with per-entry CRC32. Sample from Apache Tika.sample.xlsx (Tika `test-columnar.xlsx`) · 10 KB · виміряно 2026-04-23
PowerPoint (OOXML)PPTX	93%	100%	Linux · macOS · Windows	OOXML = ZIP with per-entry CRC32. Sample from Apache Tika.sample.pptx (Tika `testPPT.pptx`) · 36 KB · виміряно 2026-04-23
OpenDocument TextODT	96%	100%	Linux · macOS · Windows	ODF = ZIP with per-entry CRC32. Sample from Apache Tika. Note: currently auto-detected as EPUB (also ZIP) — separate detection-priority bug.sample.odt (Tika `testODFwithOOo3.odt`) · 24 KB · виміряно 2026-04-23
OpenDocument SpreadsheetODS	88%	100%	Linux · macOS · Windows	Same as ODT.sample.ods (Tika `LibreOfficeCalc_ods_1.3.ods`) · 8.8 KB · виміряно 2026-04-23
OpenDocument PresentationODP	97%	100%	Linux · macOS · Windows	Same as ODT.sample.odp (Tika `LibreOfficeImpress_odp_1.3.odp`) · 24 KB · виміряно 2026-04-23
Rich Text FormatRTF	0%	92%	Linux · macOS · Windows	Structural only — RTF has no checksums. Shotgun high because 4 KB overwrite reliably breaks brace matching or control-word syntax.sample.rtf (Tika `testRTFEmbeddedFiles.rtf`) · 1.2 MB · виміряно 2026-04-23
EML Email MessageEML	12%	84%	Linux · macOS · Windows	UTF-8 + NUL-byte integrity check on the raw file before structural parsing. NUL is never legal in a mail message; flipping the high bit of an ASCII byte produces a lone UTF-8 continuation byte. Caught ~50% of single-bit ASCII flips and ~80% of 4 KB shotgun overwrites.sample.eml (Tika `testRFC822-big`) · 6.6 KB · виміряно 2026-04-25
MBOX Mail ArchiveMBOX	13%	100%	Linux · macOS · Windows	Same UTF-8 + NUL-byte check as EML, applied to the whole concatenated file. Shotgun catches every 4 KB random overwrite (random bytes almost always include NUL or invalid UTF-8 sequences). Sniper catches roughly half the random bit flips.sample.mbox (synthesized from 4 Tika RFC822 messages) · 17 KB · виміряно 2026-04-25
Apple PagesPages	100%	100%	Linux · macOS · Windows	iWork bundle = ZIP with per-entry CRC32. Hand-authored from scratch (no Apple software, no permissive corpus exists); `scripts/build-pages-sample` regenerates a deterministic 8-IWA inner `Index.zip` with high-entropy openssl-AES-CTR payloads plus real plist metadata. CRC32 per entry catches every bit flip and every 4 KB shotgun overwrite.sample.pages (hand-authored CC0) · 56 KB · виміряно 2026-04-25
Apple KeynoteKeynote	99%	100%	Linux · macOS · Windows	iWork bundle = ZIP with per-entry CRC32. Hand-authored mirroring the Pages sample; `scripts/build-keynote-sample` regenerates a 9-IWA inner `Index.zip` plus an uncompressed `buildVersionHistory.plist` carrying `com.apple.iWork.Keynote` so the format detector keys on it. CRC32 per entry catches every 4 KB shotgun overwrite and ~99% of single-bit flips.sample.key (hand-authored CC0) · 64 KB · виміряно 2026-04-25
Apple NumbersNumbers	100%	100%	Linux · macOS · Windows	Same iWork-bundle template as Keynote with a Tables/-shaped IWA layout. The `com.apple.iWork.Numbers` marker is stored uncompressed at the head of the outer ZIP. CRC32 per entry catches every probed bit flip and every 4 KB shotgun overwrite.sample.numbers (hand-authored CC0) · 64 KB · виміряно 2026-04-25
Adobe IllustratorAI (Adobe Illustrator)	6%	—	Linux · macOS · Windows	PostScript-derived header + PDF body. Tiny 372 B sample is mostly PDF magic; later bytes are uncovered text. Shotgun N/A.sample.ai · 372 B · виміряно 2026-04-25
BAI2 Balance ReportBAI2 (Bank Admin Inst.)	20%	—	Linux · macOS · Windows	Fixed-format banking text; structural validation of record-type prefixes. No checksum. Shotgun N/A.sample.bai2 · 362 B · виміряно 2026-04-25
CSV DataCSV	0%	—	Linux · macOS · Windows	Plain text; structural validator only checks UTF-8 + delimiter consistency. 0% as expected. Shotgun N/A.sample.csv · 70 B · виміряно 2026-04-25
ClarisWorks/AppleWorksClarisWorks	6%	—	Linux · macOS · Windows	Legacy AppleWorks. Structural walk. Shotgun N/A.sample.cwk · 64 B · виміряно 2026-04-25
UN/EDIFACTEDIFACT	37%	—	Linux · macOS · Windows	Fixed-format trade messages; validator cross-checks UNH/UNT counts. Shotgun N/A.sample.edifact · 152 B · виміряно 2026-04-25
Encapsulated PostScriptEPS	4%	—	Linux · macOS · Windows	PostScript header + structural walk. Shotgun N/A.sample.eps · 430 B · виміряно 2026-04-25
EPUB eBookEPUB	69%	—	Linux · macOS · Windows	ZIP container with mimetype check; per-entry CRC32. Shotgun N/A.sample.epub · 2.0 KB · виміряно 2026-04-25
HTML DocumentHTML	2%	—	Linux · macOS · Windows	Tag-tree validator; structural only. Shotgun N/A.simple.html · 196 B · виміряно 2026-04-25
iCalendariCalendar (RFC 5545)	21%	—	Linux · macOS · Windows	Structural; BEGIN/END pairing + property syntax. Shotgun N/A.sample.ics · 650 B · виміряно 2026-04-25
Adobe InDesign MarkupIDML (InDesign)	55%	—	Linux · macOS · Windows	ZIP+XML markup; per-entry CRC32. Shotgun N/A.sample.idml · 884 B · виміряно 2026-04-25
INI ConfigINI	17%	—	Linux · macOS · Windows	Plain-text key-value; structural only. Shotgun N/A.sample.ini · 60 B · виміряно 2026-04-25
JSON DataJSON	47%	—	Linux · macOS · Windows	JSON parser; structural only. Tiny sample's curly/brace density yields 47%. Shotgun N/A.sample.json · 94 B · виміряно 2026-04-25
JSON5	30%	—	Linux · macOS · Windows	JSON5 parser; structural only. Shotgun N/A.sample.json5 · 329 B · виміряно 2026-04-25
SWIFT MT940 Bank StatementMT940 (SWIFT)	11%	—	Linux · macOS · Windows	Banking text; structural only. Shotgun N/A.sample.mt940 · 347 B · виміряно 2026-04-25
MacWrite Document	0%	—	Linux · macOS · Windows	Legacy word processor; structural only. Tiny sample. Shotgun N/A.sample.mwd · 64 B · виміряно 2026-04-25
NACHA/ACH Electronic PaymentsNACHA (ACH)	15%	—	Linux · macOS · Windows	Banking fixed-format text; record-type validation. Shotgun N/A.sample.ach · 950 B · виміряно 2026-04-25
Open Financial ExchangeOFX (Open Financial)	2%	—	Linux · macOS · Windows	Banking SGML/XML; structural only. Shotgun N/A.sample.ofx · 850 B · виміряно 2026-04-25
Plain Text (UTF-8)Plain Text	0%	—	Linux · macOS · Windows	UTF-8 + control-char check. 0% as expected. Shotgun N/A.sample.txt · 254 B · виміряно 2026-04-25
Pro Tools SessionPTX (Pro Tools)	0%	0%	Linux · macOS · Windows	Avid session structural walk. 0%/0% on 40 KB confirms structural-only.sample.ptx · 39.8 KB · виміряно 2026-04-25
Quicken Interchange FormatQIF (Quicken Interchange)	3%	—	Linux · macOS · Windows	Plain-text; structural only. Shotgun N/A.sample.qif · 218 B · виміряно 2026-04-25
TOML ConfigTOML	37%	—	Linux · macOS · Windows	Plain-text; structural only. Shotgun N/A.sample.toml · 72 B · виміряно 2026-04-25
Tax Exchange FormatTXF (Tax Exchange)	3%	—	Linux · macOS · Windows	Plain-text; structural only. Shotgun N/A.sample.txf · 140 B · виміряно 2026-04-25
vCardvCard (RFC 6350)	32%	—	Linux · macOS · Windows	Structural BEGIN/END pairing + property syntax. Shotgun N/A.sample.vcf · 198 B · виміряно 2026-04-25
WordPerfect DocumentWordPerfect	2%	—	Linux · macOS · Windows	Header walk; structural only. Shotgun N/A.sample.wpd · 512 B · виміряно 2026-04-25
X12 EDI	21%	—	Linux · macOS · Windows	Fixed-format trade messages; ISA/IEA + GS/GE counts cross-validated. Shotgun N/A.sample.edi · 262 B · виміряно 2026-04-25
XML DocumentXML	64%	—	Linux · macOS · Windows	XML parse; structural only. 64% sniper from tag/quote density on tiny sample. Shotgun N/A.sample.xml · 110 B · виміряно 2026-04-25
YAML DataYAML	0%	—	Linux · macOS · Windows	Plain-text; structural only. Shotgun N/A.sample.yaml · 68 B · виміряно 2026-04-25
Markdown TextMarkdown	0%	—	Linux · macOS · Windows	Plain-text; structural only. Shotgun N/A.sample.md · 525 B · виміряно 2026-04-25

Шрифти

Формат	Sniper	Shotgun	Платформи	Як це виявляється (або чому це неможливо)
TrueType FontTTF	100%	100%	Linux · macOS · Windows	Per-table checksum + whole-file checkSumAdjustment (strict mode)noto_sans_regular.ttf · 622 KB · виміряно 2026-03-06
OpenType FontOTF	100%	100%	Linux · macOS · Windows	Per-table checksum + whole-file checkSumAdjustmentsource_sans_regular.otf · 335 KB · виміряно 2026-03-06
WOFF FontWOFF	100%	100%	Linux · macOS · Windows	Per-table zlib-decompress + origChecksum verification (font_validator.zig:370). Prior "0%/0%" was a stale sweep — the code was already doing the right thing.roboto_regular.woff · 260 KB · виміряно 2026-04-23
WOFF2 FontWOFF2	49%	100%	Linux · macOS · Windows	Per-table Brotli-decompress + origChecksum verification. Prior "0%/0%" was a stale sweep. Sniper is lower than WOFF because WOFF2's Brotli framing is more compact (fewer structural bytes), but shotgun still perfect.roboto_regular.woff2 · 177 KB · виміряно 2026-04-23

Наука

Формат	Sniper	Shotgun	Платформи	Як це виявляється (або чому це неможливо)
FITS Astronomical DataFITS (with CHECKSUM)	100%	100%	Linux · macOS · Windows	CHECKSUM/DATASUM per HDUsample_with_checksum.fits · 5.7 KB · виміряно 2026-03-06
FITS Astronomical DataFITS (no CHECKSUM)	0%	2%	Linux · macOS · Windows	Keyword validation onlysample.fits · 699 KB · виміряно 2026-03-06
DICOM Medical ImageDICOM	5%	20%	Linux · macOS · Windows	Tag structure + value validationCT_small.dcm · 39 KB · виміряно 2026-03-06
HDF5 Scientific DataHDF5	4%	13%	Linux · macOS · Windows	Jenkins lookup3 checksum (small file)sample_v2.h5 · 6 KB · виміряно 2026-03-06
PDB Protein StructurePDB (Protein)	16%	39%	Linux · macOS · Windows	ATOM/HETATM record cross-validation1CRN.pdb · 49 KB · виміряно 2026-03-06
CIF Crystallographic DataCIF (Crystallographic Info)	0%	—	Linux · macOS · Windows	Plain-text scientific format; structural only. Shotgun N/A.sample.cif · 145 B · виміряно 2026-04-25
FASTA SequenceFASTA	22%	—	Linux · macOS · Windows	Plain-text bioinformatics; structural only. Shotgun N/A.sample.fasta · 479 B · виміряно 2026-04-25
FASTQ Sequencing ReadsFASTQ	28%	—	Linux · macOS · Windows	Plain-text bioinformatics; per-record sequence/quality length cross-check. Shotgun N/A.sample.fastq · 447 B · виміряно 2026-04-25
MATLAB DataMAT-File	94%	—	Linux · macOS · Windows	Element header + flag walk; magic + endian + tag length validation. Shotgun N/A.sample.mat · 1.3 KB · виміряно 2026-04-25
NetCDF Scientific DataNetCDF	39%	—	Linux · macOS · Windows	NetCDF classic header walk; HDF5-derived NetCDF-4 reuses HDF5's lookup3 checksums. Tiny sample. Shotgun N/A.sample.nc · 84 B · виміряно 2026-04-25
NIfTI NeuroimagingNIfTI-1	1%	—	Linux · macOS · Windows	Header magic + dims; no checksum. Shotgun N/A.sample.nii · 416 B · виміряно 2026-04-25
Apache Parquet DataParquet	2%	—	Linux · macOS · Windows	Footer + page CRC32 (not currently verified by validator beyond header). Shotgun N/A.sample.parquet · 484 B · виміряно 2026-04-25
ESRI ShapefileShapefile	89%	—	Linux · macOS · Windows	GIS .shp; record-by-record header check + magic. Shotgun N/A.sample.shp · 128 B · виміряно 2026-04-25

Бази даних

Формат	Sniper	Shotgun	Платформи	Як це виявляється (або чому це неможливо)
QuickBooks Company FileQBW	100%	100%	Linux · macOS · Windows	CRC32 per 4096-byte page (v12+)B18_Managing_Company_Files.qbw · 15 MB · виміряно 2026-03-06
SQLite DatabaseSQLite	54%	100%	Linux · macOS · Windows	Page headers + btree structurechinook.sqlite · 1.0 MB · виміряно 2026-03-06
Microsoft Access DatabaseACCDB	1%	73%	Linux · macOS · Windows	Jet engine page structure (small file)sample.accdb · 4 KB · виміряно 2026-03-06
Microsoft Access Database (97-2003)MDB	1%	73%	Linux · macOS · Windows	Jet engine page structure (small file)sample.mdb · 4 KB · виміряно 2026-03-06

Архіви

Формат	Sniper	Shotgun	Платформи	Як це виявляється (або чому це неможливо)
Tar ArchiveTAR	15%	73%	Linux · macOS · Windows	Header checksum per 512-byte blocksample.tar · 4 KB · виміряно 2026-03-06
7-Zip Archive7z	99%	100%	Linux · macOS · Windows	7z next-header CRC32 + per-stream CRC32. Hand-authored xorshift corpus (CC0). Both sniper and shotgun catch nearly every flip.corpus_xorshift.7z · 17 KB · виміряно 2026-04-25
Unix ar ArchiveAR (Unix archive)	38%	—	Linux · macOS · Windows	`!<arch>\n` magic + 60-byte member headers; no per-entry checksum. Shotgun N/A.minimal.a · 88 B · виміряно 2026-04-25
BLIP ArchiveBLAR (Blake3 Archive)	100%	—	Linux · macOS · Windows	Peter's archive format with Blake3 per-entry hashing. Every probed bit flip detected. Shotgun N/A.sample.blar · 1.0 KB · виміряно 2026-04-25
Brotli CompressedBrotli	47%	100%	Linux · macOS · Windows	Raw Brotli stream; full streaming decompression via libbrotli. RFC 7932 has no whole-file checksum, but the entropy coder rejects most structurally invalid prefix codes / distance overflows / window-bits errors. ~47% of single-bit flips on dense English-text Huffman streams cascade into decoder failure; the rest decode to wrong-but-valid bytes (silent). 4 KB shotgun overwrites are essentially always rejected. Earlier 0%/0% row used a pathological xorshift random-noise corpus where compressed output is ~8 bits/byte and bit flips are statistically valid Huffman codes; replaced with a deterministic CC0 English-text corpus (scripts/build-brotli-corpus).realistic_corpus.br · 27 KB · виміряно 2026-04-26
Bzip2 CompressedBzip2	100%	100%	Linux · macOS · Windows	CRC32 per block + combined CRC. Hand-authored xorshift corpus (CC0).corpus_xorshift.bz2 · 17 KB · виміряно 2026-04-25
Microsoft Cabinet ArchiveCAB (Microsoft)	100%	100%	Linux · macOS · Windows	Per-folder + per-file CSUM (Adler-like) cross-validated. CC0 sample built via gcab.corpus_xorshift.cab · 27 KB · виміряно 2026-04-25
Gzip CompressedGzip	100%	100%	Linux · macOS · Windows	CRC32 + ISIZE in trailer. Hand-authored xorshift corpus (CC0).corpus_xorshift.gz · 16 KB · виміряно 2026-04-25
BinHex 4.0 ArchiveBinHex (.hqx)	100%	100%	Linux · macOS · Windows	BinHex 4.0 header + per-fork CRC16. Hand-authored CC0 sample (encoder reverse-engineered from validator).corpus_xorshift.hqx · 13 KB · виміряно 2026-04-25
BLIP Mini-ArchiveMBLAR (Multi-Blake3)	100%	—	Linux · macOS · Windows	Peter's manifest-bundle archive; Blake3 per file. Shotgun N/A.sample.mblar · 393 B · виміряно 2026-04-25
PAR2 Parity ArchivePAR2	100%	100%	Linux · macOS · Windows	MD5 of every packet + recovery slice integrity. Built via par2cmdline (BSD-licensed).corpus_xorshift.par2 · 34 KB · виміряно 2026-04-25
RAR ArchiveRAR	100%	100%	Linux · macOS · Windows	Per-entry CRC32 + RAR5 BLAKE2sp option. CC0 corpus (rar -m5).corpus_xorshift.rar · 16 KB · виміряно 2026-04-25
StuffIt ArchiveStuffIt	94%	—	Linux · macOS · Windows	Header + entry walk; sniper 94% on 140 B from header dominance. Shotgun N/A.sample.sit · 140 B · виміряно 2026-04-25
XZ CompressedXZ	100%	100%	Linux · macOS · Windows	CRC32/CRC64/SHA-256 per stream + index integrity. Hand-authored xorshift corpus (CC0).corpus_xorshift.xz · 16 KB · виміряно 2026-04-25
ZIP ArchiveZIP	100%	100%	Linux · macOS · Windows	Per-entry CRC32 + EOCD record. Hand-authored xorshift corpus (CC0).corpus_xorshift.zip · 16 KB · виміряно 2026-04-25
Zstandard CompressedZstd	100%	100%	Linux · macOS · Windows	Frame-level XXH64 + frame footer. Hand-authored xorshift corpus (CC0).corpus_xorshift.zst · 16 KB · виміряно 2026-04-25

Ігрові ROM

Формат	Sniper	Shotgun	Платформи	Як це виявляється (або чому це неможливо)
SNES ROMSNES	100%	99%	Linux · macOS · Windows	Internal ROM checksum + complementF-ZERO.smc · 524 KB · виміряно 2026-03-06
Game Boy ROMGB	0%	1%	Linux · macOS · Windows	Header checksum only (tiny coverage)Addams · 131 KB · виміряно 2026-03-06
Game Boy Advance ROMGBA	0%	0%	Linux · macOS · Windows	Header checksum onlyBomberman · 8.4 MB · виміряно 2026-03-06
Sega Genesis ROMGenesis	0%	1%	Linux · macOS · Windows	Header checksum onlyAero · 524 KB · виміряно 2026-03-06
NES ROMNES	0%	0%	Linux · macOS · Windows	iNES header only1943 · 131 KB · виміряно 2026-03-06
Nintendo 64 ROMN64	0%	0%	Linux · macOS · Windows	No integrity mechanismSuper · 8.4 MB · виміряно 2026-03-06
MAME CHD ImageCHD (MAME)	10%	—	Linux · macOS · Windows	MAME's compressed disc; SHA-1 per hunk + global SHA-1. Tiny synthetic 124 B sample. Shotgun N/A.synthetic_chd.chd · 124 B · виміряно 2026-04-25
Nintendo DS ROMNDS (Nintendo DS)	41%	—	Linux · macOS · Windows	Header CRC16 (logo + secure area). 41% sniper on 1 KB. Shotgun N/A.synthetic_nds_rom.nds · 1.0 KB · виміряно 2026-04-25
DOOM WAD ArchiveWAD (Doom/Wii)	100%	—	Linux · macOS · Windows	Lump table; structural only. Tiny synthetic sample — header IS most of file. Shotgun N/A.sample.wad · 12 B · виміряно 2026-04-25

Образи дисків / файлові системи / виконувані / інше

Формат	Sniper	Shotgun	Платформи	Як це виявляється (або чому це неможливо)
Apple Disk ImageDMG	0%	10%	Linux · macOS · Windows	Plist + koly trailersample.dmg · 17 KB · виміряно 2026-03-06
ISO 9660 Disk ImageISO	0%	0%	Linux · macOS · Windows	PVD structural onlysample.iso · 358 KB · виміряно 2026-03-06
COFF Object FileCOFF	0%	1%	Linux · macOS · Windows	Section header structuresample.o · 10 KB · виміряно 2026-03-06
Mach-O Universal BinaryMach-O Fat	0%	0%	Linux · macOS · Windows	Architecture header onlysample · 33 KB · виміряно 2026-03-06
Blorb Interactive FictionBlorb	0%	0%	Linux · macOS · Windows	IFF structural onlyAlabaster.gblorb · 3.1 MB · виміряно 2026-03-06
macOS DS_StoreDS_Store	0%	25%	Linux · macOS · Windows	BTree page structuresample.ds_store · 10 KB · виміряно 2026-03-06
ASF MediaASF	1%	0%	Linux · macOS · Windows	GUID/object structuralsample.asf · 7 KB · виміряно 2026-03-06
Quicken Data FileQDF	1%	0%	Linux · macOS · Windows	OLE2/ZIP structuralLONDON_2018.QDF · 5.1 MB · виміряно 2026-03-06
3MF 3D Manufacturing3MF (3D Manufacturing)	75%	—	Linux · macOS · Windows	ZIP-based; per-entry CRC32 + XML manifest. Shotgun N/A (sample < 4 KB).sample.3mf · 1.5 KB · виміряно 2026-04-25
Adobe After Effects ProjectAEP (After Effects Project)	27%	—	Linux · macOS · Windows	RIFX container; structural-only walk. Tiny sample (44 B). Shotgun N/A.sample.aep · 44 B · виміряно 2026-04-25
Ableton Live SetALS (Ableton Live Set)	90%	—	Linux · macOS · Windows	gzip-wrapped XML. Tiny sample — gzip CRC32 + zlib structure catches most bit flips. Shotgun N/A.sample.als · 82 B · виміряно 2026-04-25
Apple Media Library DatabaseApple Media DB	46%	—	Linux · macOS · Windows	tvdb/photo SQLite-derived store. Structural walk. Shotgun N/A.sample.tvdb · 253 B · виміряно 2026-04-25
GarageBand ProjectGarageBand (.band)	0%	—	Linux · macOS · Windows	Bundle (directory) format — `projectData` inside is a plist routed to plist validator. Sweep-only on the plist file. Shotgun N/A.projectData (inside .band bundle) · 512 B · виміряно 2026-04-25
Erlang/Elixir BEAM BytecodeBEAM (Erlang)	36%	—	Linux · macOS · Windows	FOR1/IFF chunk container; chunk lengths cross-validated. No CRC. Shotgun N/A.sample.beam · 736 B · виміряно 2026-04-25
Blender 3D ProjectBlender (.blend)	47%	—	Linux · macOS · Windows	DNA-block-based binary. Structural walk; no checksum. Tiny header-only sample. Shotgun N/A.sample.blend · 104 B · виміряно 2026-04-25
BSP Map FileBSP (Quake)	39%	—	Linux · macOS · Windows	Lump-table walk; no CRC. Structural only. Shotgun N/A.sample.bsp · 1.0 KB · виміряно 2026-04-25
Bitwig Studio ProjectBitwig Project	0%	—	Linux · macOS · Windows	ZIP-derived but tiny sample (128 B). Sniper 0% — sample is below ZIP minimum. Shotgun N/A.sample.bwproject · 128 B · виміряно 2026-04-25
Chromium Resource PAKChromium PAK	0%	—	Linux · macOS · Windows	Resource bundle; index walk only. Tiny synthetic sample. Shotgun N/A.sample.pak · 30 B · виміряно 2026-04-25
Cubase Project	49%	—	Linux · macOS · Windows	Steinberg binary. Structural only. Shotgun N/A.sample.cpr · 76 B · виміряно 2026-04-25
DER Certificate/KeyDER (ASN.1)	7%	—	Linux · macOS · Windows	TLV-walked. Structural; no checksum. Shotgun N/A.sample.der · 688 B · виміряно 2026-04-25
DaVinci Resolve ProjectDRP (DR Painter)	60%	—	Linux · macOS · Windows	Generic binary — high sniper from header dominance. Shotgun N/A.sample.drp · 263 B · виміряно 2026-04-25
AutoCAD DrawingDWG (AutoCAD)	1%	—	Linux · macOS · Windows	Section structure walk. Tiny sample. Shotgun N/A.sample.dwg · 1.0 KB · виміряно 2026-04-25
AutoCAD DXFDXF (AutoCAD)	5%	—	Linux · macOS · Windows	Plain-text CAD; structural only. Shotgun N/A.sample.dxf · 388 B · виміряно 2026-04-25
EEx/ERB TemplateErlang Mix .eex	0%	—	Linux · macOS · Windows	Plain-text template; structural only. Shotgun N/A.sample.eex · 378 B · виміряно 2026-04-25
ELF ExecutableELF	20%	—	Linux · macOS · Windows	Section header walk; no whole-file checksum. Tiny synthetic 64 B sample. Shotgun N/A.minimal.elf · 64 B · виміряно 2026-04-25
Erlang TermErlang BERT	0%	—	Linux · macOS · Windows	External Term Format walk. Shotgun N/A.sample.app · 281 B · виміряно 2026-04-25
Final Cut Pro XMLFCPXML (Final Cut)	58%	—	Linux · macOS · Windows	XML-based; structural walk. Shotgun N/A.sample.fcpxml · 134 B · виміряно 2026-04-25
FL Studio ProjectFL Studio	6%	—	Linux · macOS · Windows	Project file structural walk. Tiny sample. Shotgun N/A.sample.flp · 122 B · виміряно 2026-04-25
GLB Binary glTFGLB (glTF binary)	32%	—	Linux · macOS · Windows	Chunk-based; structural walk. JSON chunk + BIN chunk lengths cross-validated. Shotgun N/A.box.glb · 1.6 KB · виміряно 2026-04-25
glTF 3D SceneglTF (JSON)	20%	—	Linux · macOS · Windows	JSON manifest; structural only. Shotgun N/A.box.gltf · 2.8 KB · виміряно 2026-04-25
IFF ContainerIFF (EA)	46%	—	Linux · macOS · Windows	Chunk walk; no CRC. Shotgun N/A.sample.iff · 232 B · виміряно 2026-04-25
Java Class FileJava .class	21%	—	Linux · macOS · Windows	ClassFile constant pool walk; magic + version check. Shotgun N/A.Hello.class · 397 B · виміряно 2026-04-25
KML Geographic DataKML	58%	—	Linux · macOS · Windows	GIS XML; structural only. Shotgun N/A.sample.kml · 1.0 KB · виміряно 2026-04-25
KMZ Compressed KMLKMZ	95%	—	Linux · macOS · Windows	KMZ = zipped KML; per-entry CRC32 catches almost any bit flip on the small sample. Shotgun N/A.sample.kmz · 538 B · виміряно 2026-04-25
Logic Pro X ProjectLogic Pro X	71%	—	Linux · macOS · Windows	Bundle format — sample is `ProjectData` plist alone. Shotgun N/A.sample.logicx (ProjectData) · 249 B · виміряно 2026-04-25
Larian Studios PAKLSPK (Larian Studios)	3%	—	Linux · macOS · Windows	Pak file; structural only. Shotgun N/A.sample.lspk · 256 B · виміряно 2026-04-25
Mach-O BinaryMach-O	0%	—	Linux · macOS · Windows	Single-arch sample; load command walk; no checksum. Shotgun N/A.sample.o · 536 B · виміряно 2026-04-25
Wavefront OBJ 3D ModelOBJ (Wavefront)	44%	—	Linux · macOS · Windows	Plain-text 3D; vertex/face syntax check. Shotgun N/A.sample.obj · 652 B · виміряно 2026-04-25
Quake PAK ArchivePAK (Quake)	60%	—	Linux · macOS · Windows	Header offset/length cross-check. Tiny synthetic sample (12 B). Shotgun N/A.sample.pak · 12 B · виміряно 2026-04-25
Windows PE ExecutablePE (Windows)	3%	—	Linux · macOS · Windows	MZ + PE headers; optional checksum (rarely populated). Tiny sample. Shotgun N/A.sample.exe · 1.0 KB · виміряно 2026-04-25
PEM Certificate/KeyPEM (RFC 7468)	51%	—	Linux · macOS · Windows	Base64 envelope; structural only. Shotgun N/A.sample.pem · 989 B · виміряно 2026-04-25
PGP Signed Message	81%	—	Linux · macOS · Windows	Header/footer detect + Base64 walk. Shotgun N/A.sample.asc · 370 B · виміряно 2026-04-25
Apple Property ListPlist	52%	—	Linux · macOS · Windows	Both XML and binary plist; structural only. Shotgun N/A.sample.plist · 830 B · виміряно 2026-04-25
PLY Polygon FilePLY (3D)	51%	—	Linux · macOS · Windows	Header + element count; no per-element checksum. Shotgun N/A.sample.ply · 447 B · виміряно 2026-04-25
Adobe Premiere Pro ProjectPremiere Project	55%	—	Linux · macOS · Windows	Gzip-wrapped XML. Tiny sample. Shotgun N/A.sample.prproj · 112 B · виміряно 2026-04-25
Reason ProjectReason (Propellerhead)	33%	—	Linux · macOS · Windows	Bundle binary; structural walk. Shotgun N/A.sample.reason · 96 B · виміряно 2026-04-25
Reaper ProjectRPP (Reaper)	50%	—	Linux · macOS · Windows	Plain-text project; structural only. Shotgun N/A.sample.rpp · 44 B · виміряно 2026-04-25
Sketch Design FileSketch (.sketch)	56%	—	Linux · macOS · Windows	ZIP-based; per-entry CRC32. Shotgun N/A.sample.sketch · 631 B · виміряно 2026-04-25
SSH Signature	64%	—	Linux · macOS · Windows	RFC 4880-like wire-format walk. Shotgun N/A.sample.sig · 294 B · виміряно 2026-04-25
STEP CAD ModelSTEP (.step)	23%	—	Linux · macOS · Windows	ISO 10303-21 plain-text CAD. Shotgun N/A.sample.stp · 711 B · виміряно 2026-04-25
STL 3D ModelSTL (3D)	73%	—	Linux · macOS · Windows	Both ASCII and binary stl; sniper 73% on small ASCII sample. Shotgun N/A.sample.stl · 518 B · виміряно 2026-04-25
Roxio Toast Disc ImageToast (Roxio)	0%	10%	Linux · macOS · Windows	Apple Toast disc image; structural walk.sample.toast · 36.0 KB · виміряно 2026-04-25
Type 1 Font	0%	—	Linux · macOS · Windows	PostScript-derived font; eexec encrypted body walk. Shotgun N/A.sample.pfa · 174 B · виміряно 2026-04-25
VMware Virtual DiskVMDK	0%	0%	Linux · macOS · Windows	VMware disk descriptor + extent walk. 65 KB sample at 0%/0% — structural-only.sample.vmdk · 64.0 KB · виміряно 2026-04-25
Valve PAK ArchiveVPK (Valve Pak)	100%	—	Linux · macOS · Windows	Tiny synthetic 28 B sample; structural walk catches every flip (header IS the file). Shotgun N/A.sample.vpk · 28 B · виміряно 2026-04-25
WARC Web ArchiveWARC (Web Archive)	48%	—	Linux · macOS · Windows	Record header + content-length walk. Shotgun N/A.sample.warc · 1.1 KB · виміряно 2026-04-25
WebAssembly ModuleWebAssembly	35%	—	Linux · macOS · Windows	Section LEB128 length walk; magic + version. Tiny sample. Shotgun N/A.minimal.wasm · 24 B · виміряно 2026-04-25
Windows Imaging FormatWIM (Windows Imaging)	8%	—	Linux · macOS · Windows	XPRESS/LZX section walk; partial integrity. Shotgun N/A.sample.wim · 1.2 KB · виміряно 2026-04-25

Пізні доповнення (закриття прогалин у покритті)

Формат	Sniper	Shotgun	Платформи	Як це виявляється (або чому це неможливо)
Studio One ProjectStudio One Project (.song)	100%	100%	Linux · macOS · Windows	ZIP-based; per-entry CRC32 + metainfo.xml integrity. Hand-authored CC0 sample.sample.song · 41 KB · виміряно 2026-04-25
StuffIt X ArchiveStuffIt X (.sitx)	0%	0%	Linux · macOS · Windows	Magic + structural header walk only; no per-entry checksums in current validator. Hand-authored.sample.sitx · 16 KB · виміряно 2026-04-25
Microsoft InstallerMicrosoft Installer (.msi)	0%	43%	Linux · macOS · Windows	OLE2 compound file (no integrity beyond CFBF FAT structure). Built via wixl. Shotgun catches FAT/dir mismatch.sample.msi · 9 KB · виміряно 2026-04-25
Windows ESD ImageWindows ESD (.esd)	1%	0%	Linux · macOS · Windows	WIM variant with LZMS compression; structural header walk (208-byte WIM header). Hand-authored.sample.esd · 16 KB · виміряно 2026-04-25
LLVM Precompiled HeaderLLVM Precompiled Header (.pch)	0%	0%	Linux · macOS · Windows	Magic ("CPCH") + LLVM bitcode signature only. Bitcode contents are version-specific; structural only.sample.pch · 16 KB · виміряно 2026-04-25
LLVM Serialized DiagnosticsLLVM Serialized Diagnostics (.dia)	0%	0%	Linux · macOS · Windows	Magic ("DIAG") + LLVM bitcode signature only. Same limit as .pch.sample.dia · 16 KB · виміряно 2026-04-25
QuickBooks BackupQuickBooks Backup (.qbb)	8%	24%	Linux · macOS · Windows	OLE2-based; dispatches through document_validators (no per-stream checksum). Sample shared with ole2/sample.doc.sample.qbb · 19 KB · виміряно 2026-04-25
PCAP Network CapturePCAP	4%	100%	Linux · macOS · Windows	Hand-authored (no sudo for tcpdump in nix sandbox). Walks every packet record's incl_len/orig_len; shotgun lands in valid trailer bytes that fail length checks. Fixed 64 MiB-stack-overflow bug in `validatePcap` while landing the sample.sample.pcap · 13 KB · виміряно 2026-04-25
PCAPNG Network CapturePCAPNG	0%	0%	Linux · macOS · Windows	Section Header Block + IDB + EPBs structural walk; pcapng-validator checks magic and BOM only (no block-level CRC verification yet — pcapng has optional CRC32 per block).sample.pcapng · 9 KB · виміряно 2026-04-25
dBASE DatabasedBASE (.dbf)	0%	100%	Linux · macOS · Windows	Header version + date + record-length cross-validation; hand-authored CC0 dBASE III. Sniper rate fundamental (no per-record checksum); shotgun lands in tail records past header-declared range.sample.dbf · 21 KB · виміряно 2026-04-25
G-code (3D Printer/CNC)G-code	27%	98%	Linux · macOS · Windows	Text format; line-grammar walk catches 27% sniper (most flips break a coordinate or G/M code prefix). Shotgun 98% — large overwrite breaks too many lines to ignore. Hand-authored CC0.sample.gcode · 20 KB · виміряно 2026-04-25
MessagePack DataMessagePack (.msgpack)	0%	0%	Linux · macOS · Windows	Type-tagged binary; validator walks tag stream but spec has no checksum. Most flips land in payload bytes that decode to different-but-valid values. Fundamental limit per RFC. Hand-authored CC0.sample.msgpack · 19 KB · виміряно 2026-04-25
RPM-пакетRPM Package (.rpm)	3%	30%	Linux · macOS · Windows	RPM v3 lead + signature header + main header. Validator computes SHA-1 over main header (when sig tag 269 present). Shotgun 30% reflects header dominance vs payload mass. Built via rpmbuild (CC0 spec). Fixed 16 MiB-stack-overflow bug in `validateRpm` while landing the sample.sample.rpm · 22 KB · виміряно 2026-04-25