As a developer, I keep a handful of utilities bookmarked for daily debugging and quick tasks. Toosli replaced most of them with one clean site.
Dev tools I use regularly:
⚡ JSON Formatter & Validator — format, minify, fix broken JSON
⚡ Base64 Encoder/Decoder — encode/decode text and data
⚡ URL Encoder/Decoder — percent-encoding made easy
⚡ Regex Tester — live match highlighting
⚡ JWT Decoder — inspect header, payload & expiry
⚡ Hash Generator — MD5, SHA-1, SHA-256, SHA-512
⚡ Timestamp Converter — Unix epoch ↔ human date
⚡ UUID Generator — instant v4 UUIDs
⚡ CSV to JSON Converter — both directions
⚡ Text Diff Checker — compare two snippets side by side
Everything runs client-side in JavaScript. No API keys, no rate limits, no sending sensitive tokens to a third-party server.
Bookmark it for your next debugging session:
https://toosli.com
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