buncha.tools
buncha/design/duotone

Duotone

Files stay on your device. Tools run in your browser.

Pairs well with

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Border Radius Generator
Generate CSS border-radius with a visual editor.
Box Shadow Generator
Create and preview CSS box shadows visually.

About Duotone

Spotify-poster two-colour treatment. Pick a dark and light colour, the image is rendered as a gradient between them.

Everything happens on your device. Close the tab and it's gone.
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Built browser-first. Run by one developer.
Every tool runs on your device. No tracking pixels, no sign-up to start. The numbers below are pulled live from the registry.
386
Free tools
Across 14 categories
7
Visual editors
PDF · image · video · audio
34
Curated kits
By profession + lifestyle
27
AI tools
Powered by Claude API
Files never uploadNo tracking pixelsNo sign-up neededWorks in any modern browser
The handful of AI tools (paraphrase, summarise, blog, captions, etc.) send your prompt text to Anthropic's Claude API to do the work. Files, images, PDFs and video never leave your device. Pick the tools that fit your privacy comfort.