Privacy Policy

Last updated 2 October 2026

The rest of this page explains what that means in detail, including the two places where your browser does still talk to a website.

What the extension handles

To draw a tree of your tabs, the extension reads:

• Page addresses (URLs) and titles of your open and saved tabs
• The address of each site's favicon
• How your windows, tab groups and tabs are arranged, and which tab is active
• Whether a tab is pinned, and a tab group's name, colour and collapsed state
• Anything you add yourself: notes, colours and dividers
• When each tab and window was added to the tree, and when it was closed

Google classifies page addresses and titles as web browsing activity, so that is what this extension declares. It is the same information the tab strip already shows you — it is simply shown in a tree instead.

Where it is kept

On your computer, in storage that belongs to the extension:

• IndexedDB — your tree and its edit history
• chrome.storage.local — small settings, the recovery snapshots used to restore windows after a restart, and the last time Chrome was seen running, which dates a window lost in a crash
• chrome.storage.session — short-lived bookkeeping, discarded when Chrome closes

The extension deliberately does not use chrome.storage.sync, so your tree is not copied to your Google account or shared between your devices.

What leaves your computer

Nothing. The extension has no backend, makes no network requests of its own, and contains no analytics, telemetry, crash reporting or advertising code. There is no account to create and no data to opt out of sharing, because there is no sharing.

The other place your browser talks to a website on the extension's behalf: every few hours the extension asks Chrome to check the Chrome Web Store for a newer version of itself. That is Chrome's own update check — the same one Chrome makes on its own schedule for every extension you have installed — and it carries nothing about your tabs, your tree or your notes.

Your information is never sold, and never transferred to anyone.

The other exception: favicons

Rows show each site's own icon, using the icon address Chrome already knows. Displaying that image is an ordinary image request from your browser to that site, usually served from your browser's cache — the same request that happens when the tab itself is open.

Nothing about your tree, your notes or your other tabs is included in it: it is a request for an icon, made by your browser, not by any server of ours. Sites with no icon, and internal pages whose icons cannot be loaded, get a placeholder drawn by the extension instead.

Exports

When you choose to export, the extension saves a JSON file to your computer the way Chrome saves any download. That file contains your tree — addresses, titles and any notes — and it goes only where you put it. The extension does not upload it, and cannot read it back unless you import it.

Automatic backups

Off unless you switch them on. When they are on, the extension saves the same kind of file as an export once a day, into a Tab Manager backups folder inside your Downloads folder, and keeps the newest 30. To stay at 30 it deletes older backup files — only files it saved itself, and never anything else in your Downloads folder. The files stay on your computer; nothing is uploaded.

Permissions, and why each one is needed

• tabs — to read the titles and addresses used to build the tree. Without it, every row would be blank.
• tabGroups — to show your tab groups, and to rename, recolour or collapse one from the manager.
• storage — to keep your tree between sessions.
• unlimitedStorage — a large tree exceeds the default storage quota, and hitting that limit would lose data.
• alarms — to check once an hour whether a daily backup is due, when backups are on.
• offscreen — to build the backup file, which the extension's background process cannot do by itself.
• downloads, only if you switch backups on — to save the backup files and remove old ones. Chrome asks you before granting it, and the extension gives it back when you switch backups off.

The extension requests no host permissions, so it cannot read the content of any page.

Deleting your data

Delete individual nodes in the manager window at any time. Removing the extension from Chrome deletes everything it has stored on your computer. Any export or backup files already saved are yours, and stay until you delete them.

Children

Tab Manager is a general-purpose tool and is not directed at children. It collects nothing from anyone, of any age.

Changes to this policy

If the extension ever handles data differently, this page will say so before the change ships, and the date at the top will be updated.

Contact

Questions about this policy, or about what the extension does, can go to joshdelgado.public@gmail.com.