我们打开的每一种格式。

Portable Document Format — fixed-layout documents.

Microsoft Word OOXML document.

Microsoft Excel OOXML spreadsheet.

PowerPoint OOXML presentation.

Rich Text Format document.

OpenDocument Text (LibreOffice Writer).

OpenDocument Spreadsheet (LibreOffice Calc).

OpenDocument Presentation (LibreOffice Impress).

Standard reflowable ebook format.

Mobipocket ebook (older Kindle).

Kindle Format 8 ebook.

FictionBook XML-based ebook.

Scanned-document format (academic, archives).

Comic Book ZIP — images in a zip.

Comic Book RAR — images in a RAR.

Legacy Excel binary spreadsheet (BIFF, pre-2007).

Legacy Microsoft Word binary (pre-2007).

Legacy PowerPoint binary deck (pre-2007).

Corel WordPerfect document.

Hangul Word Processor (Korean standard).

Modern XML-based Hangul format.

Apple iWork word processor.

Apple iWork spreadsheet.

Apple iWork presentation.

Microsoft Visio diagrams (OOXML-based).

Microsoft Project plan file.

Microsoft fixed-layout document (PDF alternative).

Compiled HTML Help (Windows manuals).

JavaScript Object Notation — structured data.

Comma-Separated Values tabular data.

Tab-Separated Values tabular data.

Extensible Markup Language.

Human-readable config/data format.

Tom's Obvious Minimal Language config.

Classic key=value config files.

.db / .sqlite database file.

dBase / Foxpro / Shapefile attribute table.

Apache columnar data format.

Apache Arrow columnar format.

HTTP Archive — browser network traces.

Saved web page in MIME multipart.

Web ARChive standard (Wayback, Common Crawl).

LLM weights container (llama.cpp ecosystem).

ML tensor storage, safe to mmap.

Scalable Vector Graphics.

Lossless raster image.

Lossy photo image.

Animated/static raster image.

Google's modern lossy/lossless image.

AV1-based modern image format.

Windows uncompressed bitmap.

Windows multi-resolution icon.

Tagged Image File Format (multi-page, high-bit).

Apple's HEVC-encoded photos from iPhones.

High Efficiency Image Format container.

Adobe Photoshop layered document.

Adobe Illustrator (modern files are PDF-compatible).

Truevision Targa raster image.

Canon, Nikon, Sony, Fuji, and other camera RAW photos.

Adobe Digital Negative — open camera RAW.

JPEG XL — next-gen image format.

JPEG 2000 wavelet image (medical, archival, cinema).

Legacy PC Paintbrush image.

Plain-text pixel formats from Unix.

DirectDraw Surface — game texture format.

Khronos texture container for GPU.

OpenEXR high-dynamic-range image (VFX).

Radiance HDR environment maps.

Apple icon resource.

Windows Metafile vector graphics — structural preview.

GIMP native layered format — structural preview with layer tree.

Microsoft JPEG XR / HD Photo — structural preview.

Audio with waveform/spectrogram view.

ID3 metadata + native audio playback.

Musical Instrument Digital Interface.

Audio cuesheet (track marks for a single file).

Tracker modules — header and sample listing.

Audio Interchange File Format.

Sheet music interchange.

Guitar tablature with playback.

Matroska multimedia container.

MPEG-4 container with metadata inspection.

Open multimedia container.

Apple QuickTime container.

Microsoft Audio Video Interleave.

Flash Video (legacy streaming).

Stereolithography 3D mesh (3D printing).

Wavefront 3D model (mesh + materials).

Autodesk Filmbox 3D (animation/rigs).

GL Transmission Format — web 3D standard.

Binary glTF (single file).

Collada XML-based 3D interchange.

Polygon File Format (Stanford scans).

Legacy 3D Studio Max format.

Modern 3D Manufacturing Format.

Virtual Reality Modeling Language (older 3D web).

Successor to VRML, XML 3D scenes.

Universal Scene Description (Apple AR).

Rhinoceros 3D model.

Additive Manufacturing Format (XML + zip).

Point Cloud Library's native format.

LDraw — Lego digital models.

MagicaVoxel voxel models.

BioVision Hierarchy — motion capture.

SketchUp model — header inspection only.

ISO 10303 CAD interchange (parametric solids).

Initial Graphics Exchange Spec (CAD).

Boundary Representation CAD geometry.

AutoCAD native drawing.

AutoCAD Drawing Exchange Format.

PCB fabrication files (RS-274X) with stackup compositing.

PCB drill/route files with tool table and hit map.

PCB design exchange archive (Valor / Siemens).

Industry Foundation Classes — BIM models.

Siemens JT — engineering 3D interchange.

ACIS solid model.

Siemens Parasolid kernel format.

Bentley MicroStation drawing.

Universal archive format.

Unix tape archive.

Gzip compression.

7-Zip archive (high compression).

Roshal Archive (proprietary, decode-only).

Optical disc image (ISO 9660).

Android / iOS app packages.

Java archives (ZIP with manifests).

Plain text — the universal format.

Plain text logs (often huge, needs virtualization).

Markdown — lightweight markup.

Web pages — render in sandboxed iframe.

Jupyter Notebook (JSON with cells).

R Markdown with code chunks.

LaTeX source with math rendering.

BibTeX bibliography database.

AsciiDoc structured text.

reStructuredText (Python docs).

Emacs Org-mode notes/outlines.

Unified diff output (Git, patches).

Mermaid diagram source.

Google Earth XML geodata.

Zipped KML bundle.

Geographic JSON features.

GPS Exchange — tracks, routes, waypoints.

ESRI Shapefile (geospatial vector).

Georeferenced raster imagery.

LIDAR point cloud.

Compressed LIDAR point cloud.

Cloud Optimized Point Cloud.

Point cloud + imagery container.

Single-file pyramid of map tiles.

SQLite-packaged map tiles.

Mapbox Vector Tiles (protobuf).

Topology-preserving GeoJSON extension.

Well-Known Text/Binary geometry encoding.

OGC GeoPackage (SQLite-based geo container).

GPS sentence stream from receivers.

RFC 822 email message.

Outlook saved email (OLE compound file).

Unix mailbox — concatenated emails.

iCalendar events/calendars.

vCard contacts.

Medical imaging (CT/MRI/X-ray) DCM files.

Neuroimaging volumetric data (.nii).

Nearly Raw Raster Data for medical/scientific volumes.

Hierarchical scientific data.

Climate/atmospheric scientific arrays.

MATLAB data file — v5 and v7.3.

NumPy array dumps.

Astronomical image and table format.

Protein Data Bank molecular structures.

Macromolecular Crystallographic Information File.

Small-molecule structure (chemistry).

Tripos Sybyl molecule format.

Plain-text atomic coordinates.

Molecule as a string.

Bio sequence (DNA/protein) plain text.

Sequencing reads with quality scores.

NCBI sequence + annotation flat file.

Generic Feature Format (gene annotations).

Genomic variants — distinct from vCard contacts.

Sequence alignment maps.

Genomic track formats.

TrueType font.

OpenType font.

Web Open Font Format.

Brotli-compressed web font.

SubRip subtitle file.

WebVTT — HTML5 native subtitles.

Advanced SubStation Alpha styled subtitles.

Apple Property List (XML or binary).

BitTorrent metainfo (bencoded).

Wireshark packet captures.

Raw bytes view of any file.

Audio/video playlist (HLS for M3U8).

JSON-based After Effects animations.

draw.io / diagrams.net XML.

DVD VobSub bitmap subtitles — IDX inspection.

Timed Text Markup (broadcast captions).

Synced song lyrics with timestamps.

Adobe Flash — runs again via emulator.

Linux/Unix executable & object files.

Windows executables — header & sections.

WebAssembly binary — disassemble to WAT.

Windows shortcut metadata.

TLS certificates and keys.