Free Online Tools
Fast, clean, no-signup developer and utility tools. Everything runs in your browser — nothing is sent to any server.
🔥 Popular Tools
🔧 Developer Tools
View all developer tools →JSON Formatter & Validator
Format, validate, and minify JSON with syntax highlighting and tree view.
UUID Generator
Generate UUID v4 instantly. Bulk generate, copy with one click.
Base64 Encoder / Decoder
Encode or decode Base64 strings instantly. Supports text and file input.
URL Encoder / Decoder
Encode or decode URLs and query strings. Handles Unicode and percent-encoding.
Regex Tester
Test regular expressions with real-time matching, highlighting, and match details.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text instantly.
Markdown Preview
Write and preview Markdown in real-time. Side-by-side editor with live rendering.
🎨 Color Tools
View all color tools →Color Picker
Pick any color visually or enter HEX, RGB, HSL. Copy color codes instantly.
Color Converter
Convert colors between HEX, RGB, HSL, and CMYK with live preview.
Palette Generator
Generate harmonious color palettes. Complementary, triadic, analogous, and more.
Contrast Checker
Check WCAG 2.1 AA/AAA contrast ratios to ensure accessible color combinations.
CSS Gradient Generator
Build linear, radial, or conic CSS gradients visually. Copy the CSS in one click.
Color Blender
Blend two colors with adjustable midpoints. Create smooth tonal transitions.