Tagstash: A Tag-First Bookmarking App and Firefox Extension

Folders force every link into one place. Tagstash lets a link carry as many tags as it needs, then finds it again by combining tags or searching. It had to be quick to save into, easy to move existing bookmarks in and out of, and sustainable to run as a paid product.

The interface puts the tag cloud and search first. Users choose from three themes, Slate, Midnight, and Light, and the choice follows their account into the browser extension. A public features page shows short recorded demonstrations of the real app, with pause controls and a text walkthrough for each.

• Bookmark saving, editing, sorting, and search, with tag filtering that narrows as tags are combined
• A tag management page for merging two tags into one
• Import from other bookmark tools, and export to HTML, CSV, or JSON
• Free and Pro plans, with Stripe Checkout and a billing portal for managing subscriptions
• Opt-in public profiles that share a read-only, tag-filterable view of a user's bookmarks, plus a JSON API for embedding them on other sites
• A Firefox extension with a quick-save popup, a sidebar for browsing and editing, and a dashboard that can serve as the browser's start page

The React front end is built with Vite and served by Cloudflare Pages. Cloudflare Pages Functions handle the API, with accounts and bookmarks stored in Cloudflare D1. Verification and password reset emails go out through Cloudflare Email Sending.

• Email verification, login lockout, and per-address and per-IP throttling
• New passwords checked against known breaches without sending the password anywhere
• Sign-up and reset flows that give the same answer whether or not an account exists
• Security headers, an automated accessibility audit, and a sitemap that lists only quality public profiles