Encoders, formatters, hashes and everyday dev utilities.
Beautify, minify and validate JSON with error messages.
Encode text to Base64 or decode Base64 back to text.
Percent-encode or decode URLs and query parameters.
Generate secure random UUID v4 identifiers in bulk.
Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes.
Pick a color and convert between HEX, RGB, HSL and CMYK.
Convert Unix timestamps to human dates and back.
Check text/background contrast against WCAG accessibility levels.
Generate harmonious colour palettes from a base colour.
Decode and inspect JSON Web Token header and payload.
Design CSS gradients visually and copy the code.
Build and understand cron schedules in plain English.
Compare two texts and highlight the differences line by line.
Convert Markdown to HTML or HTML back to Markdown, instantly.
Convert CSV to JSON or JSON back to CSV, with quoted-field support.
Design a CSS Flexbox layout visually and copy the code.
Design a CSS Grid layout visually and copy the code.
Design rounded corners visually — per corner or all at once.
Design single or layered CSS box-shadows visually.
Design a frosted-glass CSS effect visually and copy the code.
Generate random organic blob shapes as SVG.
Shrink SVG file size by removing unnecessary markup.
Write HTML, CSS and JS and see the result live — like a mini CodePen.
Try Tailwind CSS utility classes live, powered by the official Play CDN.
Build a sitemap.xml file from a list of URLs.
Ready-made buttons, toggles, sliders, cards and more — live preview, copy the code.