Privacy policy
The extension keeps your lists inside your own browser and sends nothing to us. The website runs no analytics and sets no cookies.
Last updated
Effective 10 November 2026.
Who we are
Captain Software Limited (Unit B, 11/F, 23 Thomson Road, Wan Chai, Hong Kong SAR China) publishes the Block YouTube Channels browser extension and runs the website blockchannel.one. In this policy "we" and "us" mean that company. The policy covers both the extension and the website. Questions go to info@blockchannel.one.
What data exists and where it is kept
| Data | Where it is kept | Who can see it | How long |
|---|---|---|---|
| Your blocked channels, keywords, websites, switches and PIN hash | Extension storage in your browser | You (and your browser vendor, if you use browser sync) | Until you delete them or remove the extension |
| Page content the extension checks | Nowhere; it is read in memory and discarded | Nobody | Not stored |
| Web server access logs | Our rented server in New York, USA | Us and our hosting provider | 30 days, then deleted |
| E-mails you send us | Our mailbox | Us | As long as we need them to help you, or until you ask us to delete them |
The extension
What it looks at
Block YouTube Channels runs inside your desktop browser. On YouTube it reads the video cards on the screen, including the title and channel name, so it can hide the ones that match your rules and place its Block channel button. Elsewhere it compares the address of the page with your list of blocked websites. If you switch on the matching options (both start switched off), it also checks the title and channel of YouTube players embedded in other sites and the YouTube results that Google, Bing and DuckDuckGo show you. All of this happens in your browser, and nothing it reads is stored or sent anywhere.
What it saves
The extension saves only your own settings: each blocked channel (its ID, handle and name), each keyword with its whole-word option, each blocked website, the position of every switch, and the date each item was added. A PIN, if you set one, is saved as a hash and never as the PIN itself.
These settings go into the browser's extension storage, chrome.storage.sync, or chrome.storage.local when the sync quota is full. With browser sync turned on, your browser may copy them to your other computers signed in to the same browser profile. That copying is done by your browser vendor, such as Google, Microsoft, Brave or Opera, under its own privacy terms. The settings never pass through our servers and we have no way to see them.
What it does not do
The extension makes no network requests of its own, so what you watch and what you block stay on your computer. It contains no analytics, telemetry, tracking or advertising code, and it never downloads or runs code from the internet.
Export and removal
Export writes a JSON file to your computer, and the file goes nowhere unless you send it to someone. Removing the extension deletes its settings from that browser profile.
Permissions
The extension asks for two permissions. It needs storage to keep your settings. Access to all websites lets it work with YouTube pages, block the websites on your list, and, when you turn those options on, close matching embedded players and hide matching YouTube results in search engines. Chrome describes the second one as "Read and change all your data on all websites". The install page explains each permission in more detail.
The website
Blockchannel.one is a static site with no user accounts, forms or comments. It has no analytics, sets no cookies, and loads no advertising or tracking pixels.
Like nearly every web server, ours writes an access log entry for each request. An entry holds the IP address, the date and time, the page or file requested, the referring page and the browser's user agent string. We read these logs to keep the site secure and to find and fix errors. They are kept for 30 days and then deleted. We never use them to track or profile visitors or combine them with other data, and we do not sell them. Downloading the extension's zip file creates the same kind of entry as opening any page.
The site runs on a virtual server we rent from MassiveGrid in New York, USA. MassiveGrid stores and processes the logs on our behalf as our hosting provider.
When you write to us we receive your e-mail address and whatever the message contains. We use it to reply and to fix the problem you describe. We keep the correspondence while it is useful for that and for our records, and we delete it when you ask, unless a law requires us to keep it.
Sharing
We do not sell, rent or trade personal information. Apart from our hosting provider handling server logs, we disclose information only when the law requires it or when it is needed to protect our rights or the safety of users.
International processing
We are a Hong Kong company and our server is in the United States, so log entries and e-mails may be processed outside your country. Wherever that happens, we take reasonable steps to protect them as this policy describes.
Security
The website is served over HTTPS from a maintained server, and access to its logs is limited. The extension keeps its data in the browser's protected extension storage and stores the PIN as a hash.
Children
The website and the extension are not directed at children under 13, and we do not knowingly collect personal information from them. The extension collects no personal information from anyone, so a family can use it at home. Supervising a child's use of YouTube remains the parents' responsibility.
Your rights
Depending on where you live, laws such as the GDPR in the EU and UK, the CCPA in California or the Personal Data (Privacy) Ordinance in Hong Kong may give you the right to access, correct or delete personal data we hold about you, or to object to how we use it. The only personal data we could hold is server log entries and e-mails you sent us. Write to info@blockchannel.one to make a request.
Data saved by the extension never reaches us, so you manage it yourself: edit or export it on the extension's options page, or remove the extension to delete it.
Changes to this policy
We may revise this policy when the product or the services we rely on change. This page always shows the current version and the date it was last updated. We will describe significant changes here before they take effect.
Contact
Privacy questions: info@blockchannel.one. By post: Captain Software Limited, Unit B, 11/F, 23 Thomson Road, Wan Chai, Hong Kong SAR China.