uAssets is a filter list repository that provides blocking rules for uBlock Origin and uBlock Origin Lite.
The repository addresses the problem of maintaining accurate, up-to-date filter lists that block ads, trackers, and malicious content while avoiding false positives that break websites. It works by collecting community reports of new filters needed and existing filters causing page breakage, then applying a consistent policy for inclusion based on whether filters address specific harms like ad reinsertion, anti-blocker scripts, popup abuse, or video ads. The project prioritizes fixes using uBlock Origin's extended filter syntax and coordinates with the EasyList project to avoid duplication, adding EasyList-compatible fixes for high-traffic sites to uAssets until they are incorporated upstream.
Developers should choose this repository if they maintain uBlock Origin or uBlock Origin Lite, or if they contribute filter improvements to the broader ad-blocking ecosystem. The tool suits projects that need reliable, community-maintained blocking rules aligned with established policies. The repository explicitly declines to address paywalls, adult content farms, or general annoyances like social media buttons and newsletter prompts, focusing instead on technical blocking problems that genuinely break functionality.
The project maintains a structured issue reporting process requiring users to disable other extensions and provide troubleshooting information before filters are considered, which filters out invalid reports and keeps the issue tracker focused on genuine problems. The repository grants write permissions to contributors who demonstrate consistent value, creating a tiered contribution model that balances openness with quality control. The maintainers explicitly discourage concurrent use of similarly-purposed blockers with uBlock Origin, reflecting a design philosophy centered on compatibility and predictable behavior rather than feature accumulation.
