CrumbKit: The cookie editor with a privacy score — see who's tracking you on every site

I built CrumbKit after the most popular cookie editor (EditThisCookie, 3M+ users) got pulled from the Chrome Web Store — and a malicious copycat filled the gap,

  stealing Facebook credentials from 50,000+ users.

  CrumbKit is my answer: a cookie editor you can actually trust.

  🔒 What makes it different:

  • Zero network requests — verifiable in Chrome DevTools. No analytics, no telemetry, no phoning home.

  • MIT open source — every line of code is on GitHub. You don't have to trust me, you can read it yourself.

  • Privacy score (0–100) for every site — classifies cookies into Essential, Functional, Analytics, Advertising, and Social. You'll know instantly if a site is

  tracking you.

  • Completely free. No Pro tier, no subscription, no ads. I make other developer tools — this one is my gift to the community.

  🛠️  What it does:

  • View, create, edit, delete cookies for any site

  • Export/import: JSON, Netscape (curl/wget), cURL

  • Domain whitelist — protect login cookies from bulk deletion

  • Undo (Ctrl+Z, up to 50 actions)

  • Dark/light mode

  Built from scratch for Manifest V3. Vanilla JS, no frameworks, under 85KB.

  Would love feedback from the community — especially from developers and anyone who cares about privacy. What features would you want in a cookie editor?

  🔗 Chrome Web Store: https://chromewebstore.google.com/detail/crumbkit/ggnfjnagciaomejccfjceniohpdkcbjl

  🔗 GitHub: https://github.com/wayknow/crumbkit