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Created Reference answers to various topics seen in the wild (markdown)

Raymond Hill 2024-03-01 11:27:24 -05:00
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### Does uBO use service workers?
No.
uBO doesn't use [service workers](https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorker), it uses [dedicated workers](https://developer.mozilla.org/en-US/docs/Web/API/Worker/Worker) -- and just for the time it needs it -- to avoid blocking the user interface while performing CPU-intensive tasks. For examples:
- To search strings in asset viewer
- To reverse-lookup lists in logger
- To apply patches in differential updater
- To serialize/unserialize large lists downloaded from remote servers and memory snapshots
<sub><https://old.reddit.com/r/uBlockOrigin/comments/1b36y1l/service_workers_should_i_continue_to_block/></sub>
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### Does uBO open tabs on its own?
No.
If a tab opens and uBO tells you that it blocked navigation to some URLs, something else than uBO opened the tab, and uBO merely blocked the navigation because of a filter from one of the filter lists matched.
Tabs can be created by websites or other extensions, uBO never ever creates a tab, except to its own internal pages and only when you specifically ask for it (for example when you click the "gear" icon in the popup panel.
<sub>https://old.reddit.com/r/uBlockOrigin/comments/1b3anva/why_is_ublock_origin_creating_pinned_tabs_in/</sub>
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