Privacy
Channel Blocklist processes YouTube page information and saves your extension choices locally on this computer. It does not transmit this extension data to us or to third parties. There is no developer analytics, error reporting, account or cloud sync. Selecting Write a review opens the Chrome Web Store in your browser; uninstalling can open the optional goodbye page described below.
What it stores, and where
Chrome stores your blocked channels and settings on this computer using the
storage permission. Each channel entry contains its handle or channel ID, label,
block time and any known aliases.
If you start a learning session, the chosen channel identities and start time stay here too. Ending it clears the active choices and saves only the last session's start and end times, plus lesson completion if you explicitly checked it. Ending a session alone does not record a completed lesson.
Local installation and review-invitation state records timing, popup-open days and whether the invitation was shown, dismissed or clicked. It contains no channel identities and does not record whether you submitted a review. None of this data is sent to us.
What it can see, and what it does with it
The extension runs on www.youtube.com and no other site. It reads public channel
and comment-author links and video identifiers to filter supported page elements and identify
the channel in hover previews. Public creator handles and labels may identify a person.
It also checks the current YouTube page URL to select filtering behavior and report whether the extension is running on that tab. The current page URL and filtering counts are handled temporarily inside the extension and are not added to a saved browsing history or transmitted externally. It does not read your signed-in account identity or record text you enter on YouTube.
Channel identities you block, and uploader aliases learned for those channels, stay in your local list. Other page content is used only to filter the current page and is not saved or transmitted.
Permissions, and why each one exists
storage: to keep your blocklist, settings and local session and invitation state.https://www.youtube.com/*: the extension's whole function is hiding elements on YouTube pages. It has no access to any other site.
There are no optional permissions and no remotely hosted code.
Exporting and deleting
The popup exports only your blocked-channel list to a JSON file and imports it back. Session choices, session notes and invitation state are not exported. Removing the extension deletes its local Chrome storage. Exported backup files and copies you imported on other computers remain until you delete them there.
The uninstall page
When you remove the extension, Chrome can open a goodbye page on this site. It is an ordinary browser page load, so the web server receives your IP address and normal browser request headers. The page has no feedback form, runs no analytics and sets no cookies. Its address contains no extension or user identifiers. The extension's local storage has already been removed by Chrome.
How this data is used
Channel Blocklist uses the data described here only to provide its disclosed channel-filtering controls, local learning sessions, saved list and status/review-invitation controls. Its use of this data complies with the Chrome Web Store User Data Policy, including the Limited Use requirements. It does not sell this data, use it for advertising or credit/lending decisions, or transfer it for unrelated purposes. The developer cannot access data stored locally by the extension.
Children
The extension is not directed at children. Its local data handling is described above.
Changes
If a future version transmits extension data, this page will describe it before that version ships, and the change will be described in the store listing.