cookie

See, edit and delete the cookies on any site

cookieZ is a free cookie editor for Chrome. When you ask it to delete everything, it deletes everything. No ads, no tracking, and it never connects to the internet.

Coming soon to the Chrome Web Store View the source

Free. Works in Chrome and other Chromium browsers.

The cookieZ popup on example.com, listing four cookies with their domain, path, expiry and flags, and the delete panel above them.
Every cookie on the site you're on
The delete panel with All sites selected: 7 cookies across 5 domains, with the five domains listed underneath.
See exactly what will be deleted, before it happens
The editor creating a new cookie, with every field shown: name, value, domain, path, SameSite, expiry and flags.
Create or edit any field
A search for 'token' showing one matching cookie, with the delete scope set to just the cookies shown.
Search, then delete only what's shown
A cookie marked as Kept. Its delete button is disabled and the summary says one kept cookie will be left alone.
Keep the cookies you don't want to lose

Can't log in to a site?

A lot of login problems go away once you clear that one site's cookies. Chrome hides this a few menus deep. With cookieZ it's two clicks, and you see exactly what's about to go before anything is deleted.

What it does

  • Lists every cookieFor the site you're on, with domain, path, expiry and flags. Partitioned cookies included.
  • Deletes at the scope you pickThis page, this domain and its subdomains, or every site. The count and the list of sites are shown first.
  • Creates and edits cookiesName, value, domain, path, expiry, Secure, HttpOnly and SameSite can all be changed.
  • SearchesBy name, value, domain or path. While searching, you can delete just the cookies you can see.
  • Keeps the ones you needMark a cookie as Kept and cookieZ won't delete it, even when you clear every site.
  • Tells you when Chrome changes thingsChrome caps cookie expiry at about 400 days. If you ask for longer, cookieZ says so.
  • Works in incognitoIncognito cookies stay separate from your normal ones.
  • Light or darkOr it can follow your system setting.

Delete all means all

Some cookie extensions say they've cleared everything when they've only cleared the site you're on. cookieZ shows you how many cookies will go and which sites they belong to, before it does anything.

That number comes from the same lookup that does the deleting, so what it says and what it does can't drift apart. Partitioned cookies, which many tools miss, are included.

The delete panel with All sites selected: 7 cookies across 5 domains, with the five domains listed underneath.

Nothing leaves your computer

An extension that can read your cookies can read your logins, so you should be able to check what it does with them. cookieZ makes no network requests at all. No analytics, no error reports, no update checks, no fonts or scripts from the web.

You don't have to take that on trust. Open Chrome's DevTools, watch the Network tab and use the extension: nothing goes out. Or read the code. It's plain JavaScript with no build step and no dependencies, and all of it is on GitHub.

  • At install, it only asks for access to cookies and storage.
  • Access to websites is asked for separately, the first time you open it. You can say no.
  • It saves two things on your computer: the cookies you've marked as Kept, and your theme. Never cookie values.

Read the full privacy policy

A closer look

Edit any field

Change a cookie's value, expiry, path or flags, or make a new one. A cookie that was only for one host stays that way, and a session cookie doesn't quietly become permanent.

The editor creating a new cookie, with every field shown: name, value, domain, path, SameSite, expiry and flags.

Search, then delete what you see

Filter by name, value, domain or path. An extra delete option appears that removes only the cookies left on screen.

A search for 'token' showing one matching cookie, with the delete scope set to just the cookies shown.

Keep the logins you need

Mark a cookie as Kept and it's left alone by every delete, even "All sites". The summary tells you how many it's skipping.

A cookie marked as Kept. Its delete button is disabled and the summary says one kept cookie will be left alone.

Free, and open source

cookieZ is free to use, with no ads. The code is published under the MIT licence, so you can read it, check that the version in the Chrome Web Store matches it, and build it yourself if you'd rather.

Coming soon to the Chrome Web Store Releases