- What is All Ad Specs?
- All Ad Specs (AllAdSpecs.com) is a free reference directory of digital advertising specifications. It currently covers 583 ad formats across 36 publishers, sourced from each publisher's official documentation.
- Which publishers are included?
- 36 major publishers and platforms — including social, video, retail-media, and display networks. Each publisher page lists every supported ad format with full creative requirements.
- What information does each ad spec include?
- Dimensions in pixels, supported aspect ratios, orientation, maximum file size, accepted file types, video and audio codecs where applicable, safe zones, and copy character limits.
- How current are these ad specs?
- Each spec links back to the publisher's official documentation source. We re-check entries when platforms update their guidelines so dimensions, file size limits, and codec requirements stay in sync.
- How is All Ad Specs different from a publisher's own help center?
- Publishers' help centers cover one platform at a time and are easy to lose track of. All Ad Specs collects every documented format across every major publisher in one searchable, filterable directory so you can compare placements side-by-side.
- Is All Ad Specs free to use?
- Yes. The directory is free and requires no signup — search any publisher, ad format, or pixel dimension to find the matching spec.