| Browser | Install from ... | Browser | Install from ... |
|---|---|---|---|
 |
Chrome Web Store |  |
Self-distributed (Beta) |
 |
Edge Add-ons |  |
TestFlight (Beta) |
Frequently asked questions (FAQ)
uBO Lite (uBOL) is an efficient content blocker based on the MV3 API.
uBOL operates entirely declaratively, meaning no permanent process is required for filtering. The browser handles CSS/JS injection for content filtering, ensuring that uBOL does not consume CPU or memory resources while blocking content. The service worker process is only active when interacting with the popup panel or options pages.
The default ruleset includes at least uBlock Origin's default filter set:
- uBlock Origin's built-in filter lists
- EasyList
- EasyPrivacy
- Peter Lowe’s Ad and tracking server list
You can enable additional rulesets by visiting the options page — click the Cogs icon in the popup panel.
See the Releases section.
Previous releases can be found in the Releases section of the uBlock repo.
All uBO Lite-related issues (including filter-related ones) can be reported here.
uBOL exposes settings that can be defined by administrators through managed storage. See Managed settings.
For more information, check the Wiki.