Tools built for builders

JSON Formatter

Format, validate, minify and beautify JSON instantly in your browser.

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JSON Validator

Check whether a JSON string is valid and see clear error messages.

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Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 back to text.

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URL Encoder / Decoder

Encode or decode URL query strings and path segments safely.

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UUID Generator

Generate UUID v4 identifiers for apps, databases, and APIs.

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JWT Decoder

Decode JWT header and payload locally. Does not verify signatures.

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Regex Tester

Test regular expressions against sample text with live match highlights.

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Hash Generator

Generate SHA-256, SHA-384, or SHA-512 hashes from text in the browser.

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Timestamp Converter

Convert Unix timestamps to human dates and back.

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Color Converter

Convert between HEX, RGB, and HSL color formats.

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Markdown Preview

Write Markdown and preview rendered HTML side by side.

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HTML Formatter

Beautify HTML indentation for readability.

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CSS Formatter

Beautify or minify CSS for development and delivery.

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JavaScript Formatter

Indent JavaScript for readability (best-effort beautify).

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