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Upvote Widget

One-tap upvotes — one per user

Add an upvote button to any site with no build step and no backend. Shared Google sign-in gives one vote per user (tap again to undo) and a live count. Every site gets free monthly upvotes; you only pay per upvote beyond that, from your shared credit wallet.

Register your site See pricing

Demo

Preview

Set up

The same loader also powers comments and any other widget. Or drive it from code — login uses the shared Google identity: 

BootSignalUpvote.init({ siteId: 'YOUR_SITE_ID', threadId: 'page-key', lang: 'en' })
BootSignalUpvote.signIn()           // Google popup → shared uid
BootSignalUpvote.onAuthChange((user) => console.log(user))

Upvotes require sign-in (one per user). The same widget works across the whole family.

Pricing

Each site gets a monthly free allowance of upvotes. Nothing is charged within it; beyond it, each upvote debits credits from your shared wallet. Credits are shared across all BootSignal services and never expire. See pricing details →

Family Site