Categories

Test requests, parse URLs and headers, and work with the HTTP protocol.

Format, validate, convert, and inspect JSON, YAML, XML, CSV, and TOML.

Encode and decode Base64, URLs, HTML entities, hex, Unicode, and JWTs.

Hashes, HMACs, checksums, and secure random IDs and passwords.

Test regular expressions, diff text, and clean up lines and whitespace.

Format HTML and CSS, preview Markdown, and convert colors and units.

Convert timestamps, calculate date math, and decode cron schedules.

Look up DNS records, calculate subnets, and inspect IP addresses.

Format SQL, generate INSERT statements, and parse connection strings.

Generate .gitignore files, commit messages, branch names, and more.

Convert .env files, build docker run commands, and format manifests.

Generate meta tags, Open Graph markup, robots.txt, and sitemaps.

Convert, resize, and encode images and files — entirely on your device.

Random numbers, sample JSON, fake data, and mock API responses.