Yoink — Cookie Sync for Localhost

About

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