Abstiro

I build small developer tools and write about how they work.

Articles

Keeping app state in the URL (no backend)

How the Abstiro tools make their state shareable and bookmarkable with nothing but the URL — and the encoding and validation gotchas that come with it.

Copyright-free chord progressions to practise with

Practice chord progressions built on public-domain tunes. Each link opens the Text Chord Player with the progression already filled in.

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Web Tools

Height Comparison

Compare several people's heights side by side and download the result as an image. Runs entirely in your browser.

Text Chord Player

Type a chord progression as text and hear a simple piano backing track. Tempo, meter, and pattern are adjustable, and settings share via URL.

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Data Pages

Cast Ages at Release

How old each cast member was on the day their film was released, calculated from Wikidata birthdates.

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