Browser-based · No sign-up

Fast browser-based tools for developers

Format JSON, generate UUIDs, decode JWTs, and more—all in your browser. No sign-up, no server round-trips.

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Find the right tool for the job.

Format, validate, encode, and decode data.

Generate IDs, tokens, and sample data.

Test and manipulate text with regular expressions.

Most used utilities. All run in your browser.

Data & encoding
JSON Formatter
Format and validate JSON with pretty printing.
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Generators
UUID Generator
Generate cryptographically random UUID v4 identifiers.
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Data & encoding
Base64 Encode / Decode
Encode and decode Base64 text in the browser.
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Data & encoding
JWT Decoder
Decode JWT header and payload locally.
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Text & regex
Regex Tester
Test regex patterns and view matches and groups.
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Quick answers about ToolDock.

Yes. All tools run in your browser with no sign-up, no API keys, and no payment.
No. Processing happens locally in your browser. Your JSON, tokens, and text never leave your device.
No. Just open the site in a modern browser. No extensions or downloads required.

Each tool page has its own FAQ. Browse all tools