JSON Formatter & Validator
Paste JSON to pretty-print and check it's valid.
Color Picker & Converter
Pick a color to get its HEX, RGB and HSL values.
Values
HEX #3B6FE0 · RGB 59, 111, 224 · HSL 223°, 74%, 56%
Base64 Encoder / Decoder
Convert text to Base64 or decode it back.
URL Encoder / Decoder
Safely encode text for URLs, or decode an encoded URL.
CSS Gradient Generator
Build a gradient visually and copy the CSS instantly.
CSS
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Markdown to HTML Converter
Convert basic Markdown into ready-to-use HTML.
Meta Tag Generator
Generate title, description & Open Graph meta tags for SEO.
AI Token Cost Estimator
Estimate the API cost of a prompt — paste text, enter your provider's current rate.