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Octave
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Octave
Harmonious type scales, tuned to musical intervals.
Octave turns a base size and a ratio named after musical intervals — from a Minor Second to the Golden Ratio — into a harmonious set of font sizes, previewed live in serif, sans or mono. Read every step in px and rem, tune how many sizes run larger and smaller, then copy the whole scale as ready-to-paste CSS custom properties. Built end-to-end with AI, it runs fully offline with no login, and the entire single-file source is downloadable to self-host or remix.
Built with Claude CodeNo login requiredFree to tryVerified workingOpen sourceDeveloper Tools
#typography#type-scale#css#design#fonts#web-design
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Generated launch trailer
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AIBuilt generated this launch kit automatically from /apps/octave. No uploads, no editing — point us at the build and ship.
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This launch ships its complete source as one self-contained HTML file. No build step, no backend, no strings attached.
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Single-file source — MIT licensed.
Download source (.html)Self-host
- 1. Download the file
- 2. Drop it on any static host (Vercel/Netlify/S3/your server)
- 3. Done — zero dependencies.
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Paste it into Claude, ChatGPT or Cursor together with the downloaded file.
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