Chromium

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Chromium is a free and open-source web browser project primarily maintained by Google. It serves as the foundation of several major web browsers, including Google Chrome, Microsoft Edge, Opera/Opera GX, and Brave.

Controversies

Manifest V3

Manifest V3 is an update to the manifest structure used by extensions across most of the browser market, presented as an upgrade to security, privacy and performance. Manifest V3's changes restrict the access extensions can have, presenting a security benefit by not allowing them to load remote resources on the fly or alter rendered content as deeply, but by doing so neutering the effectiveness of the browser market's most effective adblockers. Workarounds and updated versions have been made but are less effective since, for example, blocked domains cannot be updated as conveniently. This manifest change is backed by leading Chromium browsers, making it difficult for other browsers to match previous adblocking abilities without committing to sustaining Manifest V2 (such as Firefox which also uses chromium-sourced manifests) or sustaining their own adblocking solutions of varied effectiveness.