Browser extensions

Privacy policy

Covering Tab Grouper, Tab Sweeper, Duplicate Tab Cleaner, Bookmarks Manager and Random Tab Picker.

Last updated 21 August 2026

None of these extensions collect, store or transmit your personal data. There is no server, no analytics, no tracking, no advertising and no third party service of any kind. Every extension runs entirely inside your own browser and makes no network requests whatsoever.

What the extensions do with your data

To do their job, these extensions read information that Chrome exposes about your own browser: the titles and addresses of your open tabs, and in some cases your bookmarks. That information is read into memory, used immediately to perform the action you asked for, and discarded when the popup closes. It is never written to a remote location, never sent anywhere, and never shared with anyone.

  • Tab Grouper

    Reads
    Titles and addresses of tabs in the current window.
    Changes
    Places those tabs into Chrome's native tab groups.

  • Tab Sweeper

    Reads
    Titles and addresses of tabs in the current window, plus your bookmarks.
    Changes
    Saves tabs into a bookmark folder, closes them, and reopens them on request. Stores the settings you choose.

  • Duplicate Tab Cleaner

    Reads
    Addresses of tabs in the current window.
    Changes
    Closes the duplicate tabs you confirm.

  • Bookmarks Manager

    Reads
    Your bookmark tree, and site icons already cached locally by Chrome.
    Changes
    Moves, deletes, opens or copies the bookmarks you select.

  • Random Tab Picker

    Reads
    Only the internal identifiers of your open tabs, not their titles or addresses.
    Changes
    Switches you to a randomly chosen tab.

Settings storage

Tab Sweeper is the only extension that saves anything. It stores the preferences you set in its own popup: how many tabs to keep open, the threshold for its optional reminder, and your list of domains that must never be closed. These are saved using Chrome's own extension storage.

If you have Chrome Sync switched on, Chrome may sync those preferences between your own signed-in devices. That is a Chrome feature operating on your Google account, and the data goes to Google, not to me. I have no access to it. No browsing history, tab contents or bookmarks are ever placed in that storage.

Permissions and why they are needed

  • tabsLets an extension see the titles and addresses of your open tabs, which is what makes grouping by site, detecting duplicates and archiving pages possible.
  • tabGroupsLets Tab Grouper create and name Chrome's native tab groups.
  • bookmarksLets Tab Sweeper archive tabs as bookmarks, and lets Bookmarks Manager show and reorganise your bookmarks.
  • storageSaves Tab Sweeper's settings.
  • notificationsShows the optional Tab Sweeper reminder once your tab count passes a threshold you chose.
  • faviconLets Bookmarks Manager display site icons from Chrome's existing local cache, so no icons are fetched from the internet.

None of the extensions request access to the content of the web pages you visit. They cannot read what is on a page, fill in forms, or observe what you type.

Data sold or shared

Nothing is sold, rented, shared or disclosed, because nothing is collected in the first place. There is no legal basis to establish and no data subject request to fulfil, because no personal data ever leaves your device.

Children

These extensions are general purpose browser utilities and are not directed at children. Since no data is collected from anyone, no data is collected from children either.

Changes to this policy

If an extension ever gains a feature that requires handling data differently, this page will be updated before that version is published, and the date above will change.

Contact

Questions about this policy or about any of the extensions: info@mihailo.cz