Free design tools that don't ask for your email.
Eight purpose-built tools — from WCAG contrast checking to OKLCH color conversion and Lottie preview. No signup, no watermark, no upload. Everything runs in your browser.
Contrast Checker
Free WCAG 2.1 color contrast checker. Test your text and background colors against AA and AAA accessibility standards. Get contrast ratio and fix suggestions instantly.
Color Converter
Convert colors between HEX, RGB, HSL, and OKLCH. Generate complementary, analogous, and triadic palettes. Export as CSS variables or Tailwind config.
Gradient Generator
Free CSS gradient generator with live preview. Create beautiful linear, radial, and conic gradients visually. Adjust colors, stops, and angles, then copy production-ready CSS code instantly.
Color Info
Look up any hex color code for detailed conversions (RGB, HSL, OKLCH), WCAG contrast ratios, shades, tints, and the closest CSS named color.
Lottie Preview
Free online Lottie preview tool. Upload .json or .lottie files to view, test, and check animations. Inspect frame rate, dimensions, and duration. Works as a Lottie viewer, checker, tester, and JSON animation player.
Lottie to GIF
Convert Lottie JSON animations to GIF or WebM (VP9) right in your browser. Set resolution, frame rate, and quality — then download. No upload to servers, fully private.
Lottie to dotLottie
Convert Lottie JSON files to the optimized dotLottie (.lottie) format. Smaller file size, same quality. Works entirely in your browser — no upload required.
Built for one job. Done well.
We use these tools every day shipping MiroMiro. So we built them the way we wished they worked — fast, private, no nonsense.
Truly free
No signup wall after 3 conversions. No upgrade modal. No email gate to download. The tool you came for, ready in one click.
Runs in your browser
Every conversion, preview and check happens locally. Your colors, files and inputs never leave your device. Period.
Shareable URLs
Every tool encodes your inputs in the URL. Send a link to a teammate, drop it in a bug report, paste it in Slack — they land on the same result.
Want these tools built into every site you visit?
MiroMiro's Chrome extension brings the contrast checker, color extractor and design tools straight into the browser — usable on any live website.