Tools that work.
Nothing else.

Fast, offline-first developer tools. No sign-up, no tracking, no fluff. Format JSON, decode JWTs, test regex -- in the browser.

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All tools8 tools
JSON Formatter
Format, validate, and minify JSON with syntax highlighting.
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JWT Decoder
Decode and inspect JWT tokens. View header, payload, signature.
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Regex Tester
Test regular expressions with live match highlighting.
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UUID Generator
Generate v1, v4, v5 UUIDs. Bulk generate, copy in one click.
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Base64 Codec
Encode or decode Base64 strings and files instantly.
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Hash Generator
Compute MD5, SHA-1, SHA-256, SHA-512 hashes.
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URL Encoder
Encode and decode URL components and query strings.
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Text Diff
Compare two texts side by side. Highlight additions and removals.
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