Technology & Engineering120 skills

File Formats skills for AI agents

120 practitioner-grade file formats skills, each a focused Markdown document your agent loads into context on demand. Search them from Claude Desktop, Cursor or any MCP client, or pull one with the CLI.

$ npx skilldb search "file formats"

All 120 skills

3MF 3D Manufacturing Format
The 3MF file format — the modern replacement for STL in 3D printing, supporting colors, materials, multi-object assemblies, and precise manufacturing data in a single package.
253 lines
7-Zip Compressed Archive
The 7z archive format — open-source high-ratio compression using LZMA2, with strong AES-256 encryption, solid archives, and multi-threading support.
166 lines
AAC (Advanced Audio Coding)
A lossy audio codec standardized as part of MPEG-2 and MPEG-4, designed to supersede MP3 with better quality at equivalent or lower bitrates.
150 lines
AC3 (Dolby Digital)
Dolby
170 lines
AI Adobe Illustrator Format
AI is Adobe Illustrator's native vector graphics file format, used for creating logos, illustrations, typography, and print-ready vector artwork in professional design workflows.
194 lines
AIFF (Audio Interchange File Format)
Apple
158 lines
ALAC (Apple Lossless Audio Codec)
Apple
177 lines
AMR (Adaptive Multi-Rate)
A speech-optimized audio codec designed for mobile telephony, encoding voice efficiently at very low bitrates for GSM and 3G cellular networks.
191 lines
APE (Monkey's Audio)
A lossless audio compression format achieving among the highest compression ratios of any lossless codec, at the cost of CPU intensity and limited compatibility.
173 lines
APK Android Package
The APK file format — Android
235 lines
APNG (Animated PNG)
APNG is an extension of the PNG format that supports frame-based animation with full 24-bit color and alpha transparency, offering a higher-quality alternative to animated GIF.
205 lines
AppImage Portable Linux Apps
The AppImage format — self-contained, distribution-agnostic Linux applications that run without installation, packaging all dependencies in a single executable file.
345 lines
AVI (Audio Video Interleave)
AVI is Microsoft
154 lines
AVIF Image Format
AVIF is a next-generation image format based on the AV1 video codec, offering superior compression efficiency with royalty-free licensing, HDR support, and wide color gamut capabilities.
206 lines
Apache Avro
Apache Avro data serialization system — a compact binary format with embedded schema, designed for data exchange, messaging, and long-term storage with schema evolution.
263 lines
BLEND Blender Native Format
The BLEND file format — Blender
223 lines
BMP Image Format
BMP is a simple raster image format that stores pixel data with minimal or no compression, primarily associated with Microsoft Windows and used where uncompressed image data is required.
143 lines
Bzip2 Compression
The Bzip2 compression format — block-sorting compressor using the Burrows-Wheeler transform for higher compression ratios than gzip at the cost of speed.
171 lines
CSV (Comma-Separated Values)
A plain-text tabular data format where each line represents a row and fields are separated by commas, serving as the universal interchange format for structured data.
163 lines
DDS Image Format
DDS (DirectDraw Surface) is a texture container format designed for GPU-ready compressed textures, supporting block compression, mipmaps, cube maps, and texture arrays for real-time 3D graphics.
204 lines
DEB Debian Package
The DEB package format — Debian and Ubuntu
322 lines
DMG Apple Disk Image
The DMG disk image format — Apple
202 lines
DNxHR (Avid DNxHR/DNxHD)
DNxHR is Avid
181 lines
DOC (Microsoft Word Binary Format)
The legacy binary file format used by Microsoft Word from 1997 through 2003, storing rich text documents in OLE2 compound file containers.
161 lines
DOCX (Microsoft Word Open XML)
The modern Microsoft Word document format based on Open XML, storing text, formatting, images, and other content in a ZIP-compressed package of XML files.
141 lines
DSD/DSF (Direct Stream Digital)
A high-resolution audio encoding using 1-bit sigma-delta modulation at very high sample rates, originally developed for Super Audio CD (SACD) and favored by audiophiles.
181 lines
DWG AutoCAD Drawing
The DWG file format — AutoCAD
204 lines
DXF AutoCAD Exchange Format
The DXF file format — AutoCAD
257 lines
.env
Environment variable configuration files — simple key-value files for storing application secrets and environment-specific settings, loaded at runtime.
227 lines
EPS Image Format
EPS is a PostScript-based vector/raster file format historically used for print production and graphic interchange, now largely superseded by PDF and SVG but still encountered in legacy workflows.
201 lines
EPUB (Electronic Publication)
The open standard ebook format maintained by the W3C, packaging XHTML content, CSS styling, images, and metadata into a single ZIP archive for reflowable digital reading.
152 lines
EXE Windows Executable
The EXE file format — Windows Portable Executable (PE) format for applications, DLLs, drivers, and services, covering structure, signing, security, and analysis.
235 lines
EXR Image Format
OpenEXR is a high dynamic range image format developed by Industrial Light & Magic for visual effects and CGI, supporting 16-bit and 32-bit floating-point pixels, multiple channels, and deep compositing.
209 lines
FBX Autodesk Interchange
The FBX 3D interchange format — Autodesk
221 lines
FLAC (Free Lossless Audio Codec)
An open-source lossless audio compression format that reduces file size by 50-70% while preserving bit-perfect audio fidelity.
158 lines
FLV (Flash Video)
FLV is the legacy Flash Video container format that once dominated web video delivery through Adobe Flash Player, now obsolete but still encountered in archives.
167 lines
GeoJSON
GeoJSON geographic data format — a JSON-based format for encoding geographic features with geometry and properties, standardized as RFC 7946.
312 lines
Animated GIF
Animated GIF is the classic bitmap animation format using the GIF89a specification, supporting frame-based animation with palette-limited color and transparency.
171 lines
GIF Image Format
GIF is a bitmap image format supporting up to 256 colors per frame, widely known for its animation capabilities and used extensively for short loops, reactions, and simple web graphics.
149 lines
glTF/GLB 3D Web Format
The glTF and GLB 3D formats — Khronos Group
228 lines
GraphQL
GraphQL schema definition language and query files — a typed API query language and schema system for defining data graphs and client-driven data fetching.
358 lines
GZIP Compression
The GZIP compression format — the ubiquitous single-file compressor built on DEFLATE, essential for tar.gz archives, HTTP content encoding, and Unix/Linux workflows.
171 lines
HDF5
Hierarchical Data Format version 5 — a binary file format for storing large-scale numerical data, widely used in scientific computing, machine learning, and simulation.
254 lines
HEIC/HEIF Image Format
HEIC/HEIF is a modern image container format using HEVC compression, adopted by Apple as the default photo format on iOS and macOS, offering roughly 50% smaller files than JPEG at equivalent quality.
168 lines
HTML (HyperText Markup Language)
The foundational markup language of the World Wide Web, defining the structure and content of web pages through elements, attributes, and a document object model.
157 lines
ICalendar
iCalendar (.ics) event format — the universal standard (RFC 5545) for exchanging calendar events, scheduling, and time-based data between applications.
341 lines
ICO Image Format
ICO is the image file format used for icons in Microsoft Windows, containing multiple image sizes and color depths in a single file for display at various resolutions.
157 lines
INI
INI configuration file format — a simple, flat key-value format organized by sections, used in legacy Windows applications and many Unix-style config files.
195 lines
IPA iOS Application Archive
The IPA file format — Apple
244 lines
Jupyter Notebook
Jupyter Notebook format (.ipynb) — a JSON-based document format combining live code, equations, visualizations, and narrative text in computational notebooks.
314 lines
ISO Disk Image Format
The ISO 9660 disk image format — the standard for optical disc images, OS installation media, and software distribution as mountable virtual discs.
190 lines
JPEG/JPG Image Format
JPEG is the most widely used lossy compressed image format, optimized for photographs and complex images with smooth color gradations.
163 lines
JSON
JavaScript Object Notation — lightweight text-based data interchange format used nearly everywhere in web APIs, config files, and data storage.
164 lines
JPEG XL Image Format
JPEG XL is a next-generation image format designed as the universal successor to JPEG, offering superior compression, progressive decode, lossless JPEG recompression, HDR support, and royalty-free licensing.
213 lines
KEY (Apple Keynote Presentation)
Apple
158 lines
LaTeX/TeX (Academic Typesetting)
A document preparation system and typesetting language built on Donald Knuth
177 lines
Lottie (JSON Animation)
Lottie is a JSON-based vector animation format created by Airbnb that renders After Effects animations natively on web, iOS, and Android at tiny file sizes.
233 lines
HLS (HTTP Live Streaming)
HLS is Apple
199 lines
M4A (MPEG-4 Audio)
An MPEG-4 container format for audio, typically holding AAC or Apple Lossless (ALAC) encoded content, widely used in the Apple ecosystem.
176 lines
Markdown (.md)
A lightweight plain-text markup language that uses intuitive punctuation-based syntax for formatting, widely used for documentation, README files, notes, and web content.
160 lines
MIDI (Musical Instrument Digital Interface)
A protocol and file format that stores musical performance data (notes, timing, velocity) rather than audio, enabling instrument control and music composition.
182 lines
MKV (Matroska Video)
MKV is an open, flexible multimedia container format that can hold virtually any combination of video, audio, subtitle, and metadata tracks in a single file.
165 lines
MOBI/AZW (Kindle Format)
Amazon
169 lines
MOV (QuickTime File Format)
MOV is Apple
160 lines
MP3 (MPEG-1 Audio Layer III)
The most widely adopted lossy audio compression format, balancing file size and audio quality for music distribution and playback.
137 lines
MP4 (MPEG-4 Part 14)
MP4/M4V MPEG-4 container format supporting H.264/H.265 video, AAC audio, and subtitles — the dominant video format on the modern web and in consumer devices.
151 lines
DASH (Dynamic Adaptive Streaming over HTTP)
MPEG-DASH is the ISO-standard adaptive bitrate streaming protocol using MPD manifests and segmented media, widely used for DRM-protected and cross-platform video delivery.
203 lines
MessagePack
MessagePack binary serialization — a compact, fast binary format that is like JSON but smaller and faster, used for caching, IPC, and network protocols.
254 lines
MXF (Material Exchange Format)
MXF is the SMPTE-standardized professional container format for broadcast and post-production, designed for interoperable exchange of video, audio, and metadata between systems.
196 lines
NDJSON/JSONL
Newline-Delimited JSON — a text format with one JSON object per line, designed for streaming, logging, and processing large datasets line-by-line.
267 lines
NUMBERS (Apple Numbers Spreadsheet)
Apple
176 lines
OBJ Wavefront 3D Object
The OBJ 3D model format — a simple, human-readable text format for 3D geometry with broad support across modeling, rendering, and game development tools.
205 lines
ODS (OpenDocument Spreadsheet)
The open standard spreadsheet format from the OASIS OpenDocument Format (ODF) family, used by LibreOffice Calc, Apache OpenOffice, and other applications for spreadsheet documents.
167 lines
ODT (OpenDocument Text)
The open standard document format from the OASIS OpenDocument Format (ODF) family, used by LibreOffice, Apache OpenOffice, and other applications for word processing documents.
147 lines
OGG Vorbis
An open-source, royalty-free lossy audio codec in the Ogg container, offering quality comparable to or better than MP3 without patent restrictions.
157 lines
Opus
A modern, open-source, royalty-free audio codec excelling at both speech and music across a wide bitrate range, with ultra-low latency for real-time communication.
160 lines
OpenType Font
The OpenType font format — the modern standard for digital typography, extending TrueType with PostScript outlines, advanced layout features, and cross-platform support.
253 lines
PAGES (Apple Pages Document)
Apple
165 lines
Apache Parquet
Apache Parquet columnar storage format — a highly efficient binary format for analytics workloads, supporting compression and encoding optimizations.
243 lines
PDF (Portable Document Format)
Adobe
178 lines
PNG Image Format
PNG is a lossless compressed raster image format with full alpha transparency support, widely used for web graphics, screenshots, and images requiring exact pixel reproduction.
154 lines
PPTX (Microsoft PowerPoint Open XML)
The modern Microsoft PowerPoint presentation format based on Open XML, storing slides, layouts, themes, animations, and media in a ZIP-compressed package of XML files.
173 lines
ProRes (Apple ProRes)
Apple ProRes is a family of lossy and visually lossless video codecs designed for high-quality professional video editing, post-production, and broadcast delivery.
180 lines
Protocol Buffers
Protocol Buffers (Protobuf) — Google
293 lines
PSD Image Format
PSD is Adobe Photoshop's native file format, preserving layers, masks, blend modes, adjustment layers, smart objects, and all editing data for non-destructive professional image editing workflows.
200 lines
QOI Image Format
QOI (Quite OK Image Format) is a simple, fast lossless image format designed for speed over compression ratio, encoding and decoding images 20-50x faster than PNG with comparable file sizes.
141 lines
RAR Compressed Archive
The RAR archive format — proprietary compression with strong encryption, recovery records, and multi-volume splitting for high-ratio archiving.
165 lines
RAW Camera Image Format
RAW files contain minimally processed sensor data from digital cameras, preserving maximum detail, dynamic range, and editing flexibility for professional photography workflows.
177 lines
RPM Red Hat Package
The RPM package format — Red Hat
268 lines
RTF (Rich Text Format)
A Microsoft-developed text-based document interchange format that encodes formatted text with control words, providing cross-platform rich text exchange without binary complexity.
141 lines
SQL
Structured Query Language files — text files containing database queries for schema definition, data manipulation, migrations, and seed data.
229 lines
SQLite
SQLite single-file relational database — a self-contained, serverless, zero-configuration SQL database engine stored as a single cross-platform file.
249 lines
STEP/STP CAD Exchange Format
The STEP file format — the ISO standard for exchanging complete CAD product data including 3D geometry, tolerances, materials, and assembly structure across engineering tools.
209 lines
STL Stereolithography
The STL 3D model format — the standard for 3D printing, representing surface geometry as a mesh of triangles in either ASCII or binary encoding.
218 lines
SVG Image Format
SVG is an XML-based vector image format for two-dimensional graphics that scales to any resolution without quality loss, supporting interactivity, animation, and CSS styling.
175 lines
TAR Tape Archive
The TAR archive format — Unix/Linux standard for bundling files while preserving permissions, ownership, and symlinks, typically paired with a compression layer.
171 lines
TGA Image Format
TGA (Targa) is a raster image format supporting alpha channels and simple compression, historically important in game development and video production, still used in game asset pipelines.
169 lines
TIFF Image Format
TIFF is a flexible, high-quality raster image format widely used in professional photography, print production, and scientific imaging, supporting multiple compression methods, color spaces, and high bit depths.
172 lines
TOML
Tom
195 lines
TSV (Tab-Separated Values)
A plain-text tabular data format using tab characters as field delimiters, avoiding the quoting complexities of CSV and widely used in bioinformatics, linguistics, and data processing.
166 lines
TrueType Font
The TrueType font format — Apple and Microsoft
241 lines
TXT (Plain Text Files)
The simplest document format — unformatted text encoded in character sets like UTF-8, ASCII, or Latin-1, readable by virtually every computing device and application.
147 lines
USDZ Universal Scene Description
The USDZ format — Apple
298 lines
Variable Font Technology
Variable fonts — a single font file containing a continuous range of styles (weight, width, slant, optical size) controlled by design axes, replacing entire font families.
378 lines
VCard
vCard (.vcf) contact format — the universal standard (RFC 6350) for exchanging electronic business card and contact information between applications.
409 lines
WebAssembly
WebAssembly (Wasm) binary format — a portable, high-performance binary instruction format for running compiled code in browsers and server-side runtimes.
363 lines
WAV (Waveform Audio File Format)
The standard uncompressed audio format for Windows, storing raw PCM audio data with full fidelity for professional editing and archival.
180 lines
WebM
WebM is an open, royalty-free multimedia container format developed by Google for the web, using VP8, VP9, or AV1 video with Vorbis or Opus audio.
203 lines
WebP Image Format
WebP is a modern image format developed by Google that provides both lossy and lossless compression with alpha transparency and animation, offering smaller file sizes than JPEG and PNG for web delivery.
177 lines
WMA (Windows Media Audio)
Microsoft
195 lines
WMV (Windows Media Video)
WMV is Microsoft
198 lines
WOFF/WOFF2 Web Open Font Format
The WOFF and WOFF2 web font formats — compressed font containers optimized for efficient web delivery, enabling custom typography on websites with smaller file sizes.
326 lines
XCF Image Format
XCF is the native file format for GIMP (GNU Image Manipulation Program), preserving layers, channels, paths, and all editing data for non-destructive raster image editing in the open-source ecosystem.
172 lines
XLS (Microsoft Excel Binary Format)
The legacy binary spreadsheet format used by Microsoft Excel from 1997 through 2003, storing worksheets, formulas, and formatting in an OLE2 compound file structure.
191 lines
XLSX (Microsoft Excel Open XML)
The modern Microsoft Excel spreadsheet format based on Open XML, storing worksheets, formulas, charts, pivot tables, and formatting in a ZIP-compressed package of XML files.
224 lines
XML
Extensible Markup Language — a verbose but powerful structured data format widely used in enterprise systems, document formats, and legacy APIs.
243 lines
XZ/LZMA Compression
The XZ compression format — high-ratio single-stream compression using LZMA2, the modern standard for software distribution as tar.xz on Linux.
216 lines
YAML
YAML Ain
248 lines
ZIP Compressed Archive
The ZIP archive format — structure, creation, extraction, encryption, and cross-platform compatibility for the most widely used compressed archive format.
209 lines
Zstandard Compression
The Zstandard (zstd) compression format — Facebook
240 lines