Add-on slows Firefox and drives up memory use
Firefox slows badly, sometimes freezing or using hundreds of MB of memory, after the add-on is installed.
Tier I · Proven The best-established problems.
19 public reports · first reported 25 November 2017 · last reported 9 February 2026
What's going wrong
Firefox users report that after installing the WOT Safe Browsing Tool, pages take many extra seconds to load, scrolling stutters, and the browser can slow to a crawl with many tabs open.
AI-assisted: written with the help of AI from the reports. The idea report has the full summary.
In the idea report
- The full summary.
- The products the 19 reports are about, and how many came each month.
- Related problems.
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