Yoink — Cookie Sync for Localhost

Yoink cookies from any host onto your localhost for local testing.

Yoink copies cookies from any source host (staging, QA, prod) onto your localhost tabs automatically — so you can test your local build with a real authenticated session, without ever opening DevTools. ✦ How it works 1. Add one or more source hosts in the popup (e.g. https://app.staging.example.com) 2. Open any localhost or 127.0.0.1 tab 3. Yoink automatically copies all cookies from the configured hosts to your local origin on every page load 4. A small toast in the top-right corner shows you what was copied ✦ Features • Multiple source hosts — yoink from staging, QA, and prod independently • Per-host pause — silence a specific host without removing it • Global pause — disable the whole extension with one toggle • Optional on-page panel — a clean floating widget on localhost pages (off by default) • Smart input — Tab-completes the input with the hostname of your currently active tab • Incognito support — works across normal and incognito cookie stores • Status-colored toolbar icon — green when active, amber when paused, gray when idle • Zero network — cookies never leave the browser; everything happens via the Chrome cookies API ✦ Why Modern web apps depend on auth cookies. Testing a local build against real production data usually means manually copying cookies through DevTools — for every cookie, every refresh, every team member. Yoink does it in one click. ✦ Privacy Yoink does not collect, transmit, or store any data outside your browser. No analytics, no telemetry, no remote servers. Cookies move directly between Chrome's local cookie stores. ✦ Notes • Secure cookies cannot be set on http://localhost — use https://localhost if you need them • __Host- / __Secure- prefixed cookies have strict rules and may not transfer • Source code: https://github.com/ilyasudakov/yoink