What Chrome 150 Means for uBlock Origin Users
Chrome 150 ending full support for uBlock Origin refers to Google’s removal of the last internal setting that allowed the original, Manifest V2-based uBlock Origin extension to run in Chrome, making it impossible for normal users to keep using this powerful ad blocker after the browser’s late June 2026 update. For roughly 40 million people who rely on uBlock Origin Chrome for strict content blocking, this is more than a routine update. Chrome 150 removes the ExtensionManifestV2Disabled flag on June 30, and Chrome 151 will strip the remaining Manifest V2 code paths shortly after. According to CyberNews, Chrome will “no longer support dynamic filtering, limiting how Chrome extensions block ads, trackers, and other unwanted content before pages load.” The extension that remains in the Chrome Web Store, uBlock Origin Lite, is a Manifest V3 ad blocker with narrower capabilities.
Manifest V2 vs Manifest V3: Why Power Users Lose Control
Under Manifest V2, extensions like the original uBlock Origin could intercept each network request in real time and decide whether to block it before the page loaded. That meant massive blocklists, per-site rules, and advanced controls that appealed to power users. Manifest V3 ad blocker rules move this logic into Chrome’s own declarativeNetRequest engine. Instead of executing custom code on every request, MV3 extensions submit rule sets and let Chrome decide what is allowed. A Google engineer described the old MV2 path as accumulating security bugs and technical debt, which Google no longer wants to maintain. In practice, this “fixed menu” of allowed rules reduces both granularity and flexibility. Users lose fine-grained dynamic filtering and complex cosmetic tweaks, and developers can no longer extend blocking logic beyond what Chrome’s engine permits.
How uBlock Origin Lite Compares to the Original
uBlock Origin Lite is the official Manifest V3 successor, and for casual browsing it handles most common display ads without configuration. But it does not match the original’s filtering power. Dynamic filtering is the biggest missing piece: Lite feeds rule lists into Chrome, instead of cancelling requests on the fly. Some aggressive ad and tracking scripts that the full MV2 version blocked now slip through more often. Cosmetic filtering is weaker too, so you may see empty boxes or awkward gaps where ads used to be neatly removed. Raymond Hill, uBlock Origin’s developer, estimates blocking effectiveness falls by roughly 30 to 40 percent under MV3 limits. The Lite setup guide can close part of this gap with extra filter lists, yet the ceiling is still lower because Chrome caps the types and number of rules MV3 extensions can use.
Firefox vs Chrome and Other Ad Blocker Alternatives
For users who prioritize strong blocking, the real choice is Firefox vs Chrome rather than uBlock Origin Lite vs other MV3 add-ons. Firefox supports Manifest V3 but still allows Manifest V2-style extensions, so the full uBlock Origin continues to work there without restriction and with all its dynamic and cosmetic filtering features. Brave takes a different path by building its Shields system directly into the browser, outside Chrome’s extension framework, so Manifest V3 limits do not apply to its internal blocker. Meanwhile, other Chromium-based browsers like Microsoft Edge and Opera are expected to follow Chrome’s MV2 removal path, shrinking the list of places where classic uBlock Origin can run. If you stay in the Chromium world, expect weaker blockers; if you move to Firefox or Brave, you can keep something closer to today’s experience.
What Users Should Do Before the Chrome 150 Release
With Chrome 150 removing the last MV2 workaround on June 30, users who depend on the original uBlock Origin need a plan. One option is to prepare for the transition by installing uBlock Origin Lite or another Manifest V3 ad blocker now and seeing how your daily sites behave. Expect fewer options for dynamic rules and some ads or placeholders slipping through. Another option is to migrate your profile to Firefox, install full uBlock Origin, and recreate your filter lists and site-specific settings there. Power users might also test Brave for its built-in Shields if they prefer a Chromium base. The key is not to wait: once Chrome 150 and 151 land, there will be no regular-user method to re-enable the original uBlock Origin Chrome extension, and your browsing experience will change on Google’s terms, not yours.
