Everyday developer tools. Your data stays in your browser.
JSON, diff, encoding, time and MongoDB helpers that run on your machine. Paste API responses and configs without wondering where they end up.
- No uploads
- No saved pastes
- No sign-up
- Secret detector built in
All tools
JSON
JSON FormatterFormat, validate and minify JSON. JSON CompareDiff two JSON documents, ignoring key order. JSON ↔ YAMLConvert JSON to YAML and YAML to JSON. JSON ↔ CSVTurn JSON arrays into spreadsheets and back. JSON to TypeScriptGenerate interfaces from a JSON sample. JSON EscapeEscape text for a JSON string, or unescape it.
Encoding & security
Time
Why "in your browser" matters
In November 2025, researchers found that two popular online formatters had exposed more than 80,000 saved pastes through public pages: cloud keys, database passwords, private keys and payment credentials. Attackers were using them within days. Here, there is nothing to leak: your input never reaches a server.
Runs locally
Formatting, diffing, hashing and decoding happen in your browser tab.
Nothing saved
No server copy, no history on our side, no public "recent links".
Warns about secrets
Keys, tokens, passwords and connection strings are flagged, with one-click redact.