Guides for Meta advertisers

Practical guides for Meta advertisers: the Meta Ads Library, ad sizes and specs, and more. Every fact checked against its source.

• Meta Ads Library: How to Research Competitor Ads (2026)

  How to use the Meta Ads Library (Facebook Ad Library) to find and study competitor ads: search, filters, what each ad shows, what the library hides, and how to turn it into ad ideas.

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• Facebook and Instagram Ad Sizes and Specs (2026)

  Every Meta ad size in one place: Feed, Stories, Reels and carousel dimensions, aspect ratios, file sizes, text lengths and safe zones, with diagrams. Checked against Meta's Ads Guide.

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