File Format Wiki
Rules, valid examples, invalid examples, common errors, validators, converters, and comparisons for developer formats.
JSON
Strict object/array data format used by APIs and config files.
YAML
Indentation-sensitive data format common in Docker, Kubernetes, CI, and automation.
TOML
Configuration format used by Rust, Python, Netlify, and Wrangler.
XML
Tag-based markup format used by feeds, sitemaps, SVG, and enterprise APIs.
CSV
Delimited table format for spreadsheets, exports, and data exchange.
Markdown
Plain-text writing format for docs, README files, and AI instructions.
JWT
Three-part token format carrying signed claims.
Base64
Binary-to-text encoding for bytes, data URLs, and credentials.
URL encoding
Percent-encoding for query strings, paths, and form values.
Regex
Pattern language for matching text, validation, and extraction.
Cron expression
Time schedule format for recurring jobs.
SVG
XML-based vector image format used for icons and diagrams.
Portable document format for final-layout documents.
ZIP
Archive format for many files and directories.
EXIF
Image metadata format for camera, location, and device information.