![]() The Google Groups "Chromium Extensions" group is full of developers voicing frustration about functionality that they cannot (or, where alternative Manifest v3 APIs exist, don't understand how to) replicate under Manifest v3.įor example, a school district administrator posted last month about trying to rewrite his extension under the new APIs and finding that his extension can no longer use geolocation to track lost or stolen devices or monitor battery percentage to know when a battery needs replacement. It's not just high profile extensions related to content blocking and privacy that are being affected. Firefox to adopt Chrome's new approach to extensions – sans the part that threatens ad blockers. ![]() Ad-blocking browser extension actually adds ads, say Imperva researchers.As Google sets burial date for legacy Chrome Extensions, fears for ad-blockers grow.But what about nice ones that can be hijacked? This new tool spots them "Google's Manifest V3 is trying to solve a performance issue that does not exist," the company said last week. A 2019 study by Ghostery found the overhead hit imposed by ad blocking extensions is in the sub-millisecond range. Google maintains that it needs to move from a persistent model to an event-based (where tasks start and stop) to allow Chromium or the host operating system to free up computing resources in order to prevent the end user's device (particularly a resource-constrained mobile device) from slowing to a crawl due to poorly coded extension.īut Google's performance claims have been challenged. On top of this, there are many more technical changes in Manifest v3 that affect what extensions can do, like the replacement of background pages (processes that persist in the background) with " service workers," which only run in the background for a limited period of time.
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