# Ad library

> An ad library is a public database of ads currently running on a platform, such as the Meta Ad Library, used to research competitors' creative.

Canonical: https://use-addy.site/glossary/ad-library
Last updated: 2026-10-26

Also called: Meta Ad Library, TikTok Creative Center

The Meta Ad Library shows every active ad on Facebook and Instagram, searchable by advertiser. Ads that have run for weeks are a hint, not proof, that they are working, since advertisers usually switch off losers. TikTok's equivalent research tool is the Creative Center's top ads section.

## Related

- [How to research ads in the Meta Ad Library](https://use-addy.site/blog/meta-ad-library-research)
- [Free ad remix tool](https://use-addy.site/tools/ad-remix)
- [Creative testing](https://use-addy.site/glossary/creative-testing)
- [Winner variation](https://use-addy.site/glossary/winner-variation)