💻 Developer Tools

JSON formatter, Base64 encoder, URL encoder, hash generators, password generator, UUID generator, and more. Free and instant.

JSON Formatter & Validator

Format, validate, and minify JSON data.

Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 back to text.

URL Encoder / Decoder

Encode or decode URLs and query parameters.

Hash Generator (MD5, SHA-1, SHA-256, SHA-512)

Generate cryptographic hashes of any text.

Strong Password Generator

Generate secure random passwords with customizable options.

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UUID / GUID Generator

Generate random UUIDs (Universally Unique Identifiers).

HTML Formatter / Minifier

Beautify or minify HTML code.

JavaScript Minifier

Minify JavaScript code by removing whitespace and comments.

JWT Decoder

Decode JSON Web Tokens to view header and payload.

Regular Expression Tester

Test regular expressions against text and see matches highlighted.

Text Difference Checker

Compare two texts and highlight the differences.

Markdown to HTML Preview

Write Markdown and see live HTML preview.

About Developer Tools

AllToolsHub provides essential developer tools for everyday coding tasks. Format and validate JSON, encode and decode Base64 and URLs, generate cryptographic hashes, create strong passwords, generate UUIDs, format HTML, minify JavaScript, decode JWTs, test regular expressions, compare text differences, and preview Markdown - all running entirely in your browser for maximum privacy and speed.