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interactionsVercel

Autofocus for Speed

SHOULD

SHOULD: Autofocus on desktop when there's a single primary input; rarely on mobile (to avoid layout shift)

On desktop, autofocus single primary inputs; rarely on mobile

Bad

Good

Why it matters

For desktop interfaces with a clear primary action (like a search box), autofocus saves users a click. On mobile, avoid autofocus because the virtual keyboard opening causes jarring layout shifts and may scroll the page unexpectedly.

References

Built by Gleb Stroganov, design engineer at Evil Martians.

The rules come from other people's skills and guidelines — Vercel, Rauno Freiberg, @Ibelick, impeccable, Emil Kowalski, Tailwind, RAMS — each one credited on the Sources page. The work here is extraction and wiring: every rule is pulled into one corpus, given a good and a bad example you can operate, a MUST/SHOULD/NEVER rule an agent can paste, and a link back to where it came from.