What are the differences between Iridium and Chromium?
Please refer to our Wiki
Why syncing and signing in to Iridium or Google does not work?
While not directly intentional, it kind of defeats the purpose of Iridium if you are signed into Google and report everything to them. From a technical point of view, signing in to Google requires a Google API key, client ID and client secret. Iridium does not ship with one — therefore it does not work. If you insist to use Google sign-in, check Chromium API keys and follow the instructions for
Providing Keys at Runtime.
Why does a yellow warning bubble appear below the address bar?
This helps the development team to find issues with potential privacy problems. The development marks all external URLs they find in the Chromium source code with a “trk:” prefix. Additionally, all “trk:” URLs receive a number which makes tracing the code easier, i.e.
git grep trk:173.
When a marked URL is used while browsing, a warning “loading traced URL” in form of a yellow bubble below the address will be displayed, but the request will be executed.This must not appear every time loading a certain URL. If it does, please file a report in our bug tracker on GitHub.In the case of trk:173, an update of the spell checker from Google is loaded. From our view, this is no real problem, since no client data is submitted.
Why is Qwant the default search engine?
Iridium is an independent project, not connected to, supported or financed by any search engine.
However, you are free to use any search engine with Iridium Browser.
How to update Iridium Browser?
Iridium Browser does not download and install updates automatically. Updates can only be applied manually by downloading and installing the latest build. This will not affect saved bookmarks.
chrome://version to check your build version. Latest versions can always be found in the download section.
It is recommended to add the RSS feed in order to get information about the latest releases.
Why do extensions not update automatically and why does the extension panel not fully work?
Updating the extensions automatically does not work, as it would require a connection to the Chrome Web Store. This is also the reason why the extensions panel at
chrome://extensions does not fully work — disabling/enabling (check box) and removing (trash can) will not work. Also, all extensions will show a “Not from Chrome Web Store” note, even if downloaded from there.
Update any extensions manually by downloading and installing the latest version. Click on the extension icon next to the address bar to access options or to remove any extension.
You may want to backup your extensions settings before updating and reinsert these once updates have been installed. The settings can be found in Windows at
C:\Users\%user%\AppData\Local\Iridium\User Data\Default\Local Extension Settings.
Why can't the extension verify Iridium Browser?
Please try to install the extension manually or from
Why do some audio / video players not work in Iridium Browser?
Iridium Browser does not include all audio and video codecs or extensions such as Chrome.
This has many reasons, for instance, some codecs or extensions are proprietary and do not disclose their source code, and sometimes, there are legal issues as well. If you have any issues with audio or video, please try to install the codec or extension manually or from
This means that the Widevine extension (required by, amongst others, Amazon Video) and other DRM extensions will not work, as they do not comply with our privacy standards.
Is Iridium Browser available for Android, iOS or Windows Phone/Mobile?
Iridium Browser is currently not available for Android, iOS, Windows Mobile or any other mobile OS.
Is Iridium Browser open source?
Iridium Browser is both open and libre, and does not use any proprietary components. Check out the source code.
How is the Iridium Browser source code licensed?
As the Iridium Browser is based on Chromium, the same license applies. Chromium consists of many parts and each carries its own license. By entering
chrome://credits into the address bar, all components are listed and their license can be viewed.
Why is Google Safe Browsing enabled by default?
Iridium has Google Safe Browsing enabled by default. This means within 5 minutes after start and then periodically every 30(?) minutes, requests to iridiumbrowser.de (keeps a cache of the GSB data) as well as safebrowsing.googleapis.com (source) are made to update the safe browsing database. You can disable it at any time in the settings by unchecking “Privacy -> Protect you and your device from dangerous sites” (advanced settings) to avoid this request.
For all general questions about the browser, please go to the Chrome help pages