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Developer Tools

Format, minify, decode and test — JSON, regex, JWT, HTML, CSS, JavaScript, hashes, Base64, UUIDs and passwords.

13 tools
JSON Formatter Pretty-print, minify, validate.
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Hash Generator MD5, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512.
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Regex Tester Live match highlighting and groups.
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JWT Decoder Inspect a token’s header, payload and claims.
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Code to Image Converter Turn a code snippet into a shareable image.
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HTML Formatter & Minifier Beautify or compress HTML in one click.
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CSS Formatter & Minifier Beautify or compress CSS in one click.
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JS Formatter & Minifier Beautify or compress JavaScript in one click.
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JSON Tree Viewer Browse JSON as a collapsible, clickable tree.
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Strip HTML & CSS Tags Paste markup, get back plain text.
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Base64 Encode / Decode Encode text to Base64, or decode it back.
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UUID Generator Random version-4 UUIDs, in bulk.
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Password Generator Strong passwords, fully customizable.
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About our free Developer tools

Developer tools for the small jobs that interrupt real work: format and validate JSON, explore big API responses in a tree, test regular expressions with live highlighting, decode JWTs, and beautify or minify HTML, CSS and JavaScript.

You can also generate secure passwords and UUIDs, compute MD5 and SHA hashes, encode and decode Base64, strip HTML down to clean text and turn code into shareable images. Because everything runs locally in your browser, tokens, keys and private data are never sent to a server.

Other categories

Text Tools15 tools Numbers7 tools Time3 tools Documents6 tools Images7 tools Marketing17 tools SEO & AEO10 tools Blog & Backlinks3 tools Social8 tools Design19 tools Finance6 tools Health & Fitness6 tools Student6 tools