Plain Browser privacy policy

Last updated: 27 October 2026 · Polski

Plain Browser is a web browser built from Chromium with the ungoogled-chromium patch set. This policy says what the browser does with your data. It describes version 0.1.2-alpha.1 and is updated whenever a release changes it.

Summary

• Plain Browser has no telemetry, no usage statistics and no crash reports that are sent to us or anyone else.
• It has no account, sign-in or sync service, and we run no server that receives data from the browser. We cannot see what you browse.
• It does not contact Google services. The ungoogled-chromium patches remove them (Google sign-in, translation, the Chrome Web Store and others). The one exception is Safe Browsing through our own anonymizing proxy, described below; you can turn it off.
• Your browsing data stays on your device.

What we collect

Nothing. We do not receive, collect, store or sell personal information. There is no analytics, advertising identifier or tracking code in the browser.

We checked this for the first start of the browser: with a fresh profile and no page open, Plain Browser made no network requests of its own over 100 seconds. The only network activity was the Windows proxy auto-detection (WPAD) that any application using the system proxy settings performs.

Data stored on your device

Like every browser, Plain Browser stores your browsing history, cookies, cache, saved passwords, bookmarks, downloads and settings in your Windows user profile. This data is not sent to us. You can delete it in the browser settings (Clear browsing data), or remove it entirely by uninstalling the browser. In the Microsoft Store version, Windows keeps the profile in the app's private storage and removes it on uninstall.

Data sent to the websites you visit

When you open a website, the browser sends it what is needed to load the page, including your IP address and standard request headers. That is how the web works, and the website's own privacy policy applies to it.

The built-in ad blocker runs entirely on your device. Its filter lists (EasyList, EasyPrivacy, EasyList Polish) are bundled with the browser. The blocker does not download lists, and it does not report to anyone what it blocks.

Safe Browsing

Safe Browsing warns before a page known for malware or phishing opens. Plain Browser offers it without Google learning anything about you:

• Active in version 0.1.2-alpha.1, in standard protection only. The browser sends Safe Browsing requests to our proxy and to nothing else; it never contacts Google directly.
• The browser keeps a local database of hash prefixes (the "Update API", standard protection). URLs you visit are checked against it on your device. Only when a prefix matches does the browser ask for the full hashes of that prefix, which does not reveal the URL.
• Those requests go to our proxy at sb.plain-browser.app, a Cloudflare Worker, never to Google directly. The proxy forwards them to Google with our API key and strips everything that identifies you: your IP address, cookies, Referer, Accept-Language and Cloudflare's own headers. Google sees Cloudflare's IP address, a fixed User-Agent and the hash prefixes.
• The only thing the browser adds is the header X-Client: PlainBrowser/<version>. No install ID, user ID or Chromium build number is sent.
• The proxy keeps no logs. Request logging and observability are switched off and it has no storage. We cannot see which prefixes you asked about. Cloudflare still handles the connection and can see your IP address the way any website's host does; its own privacy policy applies to that.
• Enhanced Protection, real-time URL lookups and extended reporting, which would send full URLs and page content, are disabled and cannot be turned on.
• You can turn Safe Browsing off in the settings (You and Google > Google services, or Privacy and security > Security); with it off, the browser makes no requests to our proxy.

Extensions

Extensions you install can read and send data according to the permissions you grant them. Their developers, not Plain Browser, are responsible for that data and for their own privacy policies.

Microsoft Store

If you install Plain Browser from the Microsoft Store, Microsoft processes your installation and update information under Microsoft's privacy statement. We receive only aggregate figures from Microsoft Partner Center (for example, number of acquisitions), not information about you.

Children

Plain Browser is a general-purpose browser. It does not collect any personal information, including from children. It does not filter web content, so parental controls should be set up in Windows.

Changes and contact

If this policy changes, the new text is published here with a new date. Questions and requests: https://github.com/plain-browser/plain-browser/issues