Categories
Every tool, organised by what you're working on. Prefer to browse by who you are? See the audience hubs →
API & HTTP
Test requests, parse URLs and headers, and work with the HTTP protocol.
10 Tools
JSON & Data
Format, validate, convert, and inspect JSON, YAML, XML, CSV, and TOML.
20 Tools
Encoding & Decoding
Encode and decode Base64, URLs, HTML entities, hex, Unicode, and JWTs.
16 Tools
Security & Crypto
Hashes, HMACs, checksums, and secure random IDs and passwords.
13 Tools
Regex & Text
Test regular expressions, diff text, and clean up lines and whitespace.
17 Tools
Web Development
Format HTML and CSS, preview Markdown, and convert colors and units.
14 Tools
Date & Time
Convert timestamps, calculate date math, and decode cron schedules.
7 Tools
Networking
Look up DNS records, calculate subnets, and inspect IP addresses.
6 Tools
SQL & Database
Format SQL, generate INSERT statements, and parse connection strings.
5 Tools
Git & Workflow
Generate .gitignore files, commit messages, branch names, and more.
5 Tools
Docker & DevOps
Convert .env files, build docker run commands, and format manifests.
7 Tools
SEO & Meta
Generate meta tags, Open Graph markup, robots.txt, and sitemaps.
5 Tools
File & Media
Convert, resize, and encode images and files — entirely on your device.
6 Tools
Generators
Random numbers, sample JSON, fake data, and mock API responses.
4 Tools