Free Developer Tools

Format, validate, and beautify JSON data with syntax highlighting.

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

Encode or decode URLs and query parameters for safe transmission.

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any input text.

Generate random UUIDs (v4) instantly in your browser.

Convert colors between HEX, RGB, HSL, and other formats with live preview.

Convert Unix timestamps to human-readable dates and vice versa.

Test regular expressions against text with real-time matching and highlights.

Generate placeholder text in various lengths for design and development.

Generate QR codes from any text or URL instantly in the browser.

Decode and inspect JSON Web Tokens to view header and payload data.

Create beautiful CSS gradients with a visual editor and copy the code.

Write Markdown and see a live HTML preview side by side.

Compare two texts side by side and highlight the differences.

Encode or decode HTML entities for safe embedding in web pages.