Color Contrast Checker

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Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 back to plain text.

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Code Beautifier

Format and indent messy CSS, JavaScript, or HTML code.

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Cron Expression Parser

Translate a cron schedule expression into a plain-English description.

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CSS Button Generator

Design a button visually and copy the ready-made HTML and CSS.

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CSS Gradient Generator

Build linear or radial gradients visually and copy the CSS.

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CSV Generator

Build a custom CSV file by defining your own columns and data types.

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Fake Data Generator

Generate realistic-looking sample data — names, emails, addresses and more — for testing.

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Hash Generator

Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes from text.

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HTML Entity Encoder / Decoder

Convert special characters to HTML entities, or decode entities back to text.

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JSON Formatter & Validator

Format, validate and minify JSON with clear error messages.

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JWT Decoder

Decode a JSON Web Token to inspect its header and payload. Runs entirely in your browser - your token is never sent anywhere.

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Password Generator

Generate strong, random passwords with customizable length and character sets.

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Regex Tester

Test regular expressions against sample text and see every match highlighted.

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SQL Formatter

Format and beautify messy SQL queries with proper indentation.

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URL Encoder / Decoder

Percent-encode or decode text and URLs.

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UUID Generator

Generate random UUID v4 identifiers, one at a time or in bulk.

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XML Formatter

Format, validate and minify XML with proper indentation.