Format JSON, encode Base64, decode JWTs, test regex and more. Handy utilities for developers — fast, free, browser-based.
JSON FormatterZero Latency
Safe For Secrets
Copy-paste Friendly
Works Offline-capable
UtilityAdda developer tools cover the small but frequent tasks in web development: prettify JSON, minify payloads, encode URLs and Base64, generate hashes, decode JWT tokens, convert Unix timestamps, and test regular expressions with live matches.
Paste sensitive data with confidence — nothing is sent to our servers. These tools are ideal for debugging APIs, inspecting tokens locally, and cleaning up config files during development.
Formatters, encoders, crypto helpers and testing utilities.
Convert text or files to and from Base64.
OpenEncode or decode URL strings safely.
OpenGenerate MD5, SHA-256 and other hashes.
OpenInspect JSON Web Token header and payload.
OpenConvert Unix timestamps to readable dates.
Instant formatting and encoding without round trips to a server.
JWTs and API keys stay in your browser — not logged by us.
Clean output ready to drop into code, curl, or Postman.
Once loaded, many tools work without a network connection.
Format and minify JSON to spot structure issues quickly.
Decode JWT headers and payloads during OAuth integration work.
URL-encode query strings and form values for safe transmission.
Test expressions against sample text before shipping to production.
Pick JSON, Base64, JWT, regex, or another utility.
Results update live as you edit — no run button needed on most tools.
One-click copy for formatted JSON, encoded strings, or match results.