AdSize is a free, open reference for ad creative specs. Here is exactly how the numbers are gathered, checked and kept current.
Every size starts from the platform’s own advertising help center or developer documentation. Each number is then cross-checked against a second reputable source. Where official guidance is ambiguous or changes often, the entry is flagged with a lower confidence level so you know to verify before a launch.
Ad platforms change their specs without notice. This dataset is version 2026.07. Each platform page shows when it was last verified, and every row links to the source it came from so you can confirm the latest value yourself.
Updated: 07.2026AdSize is an independent project and is not affiliated with, endorsed by, or sponsored by any of the platforms listed. Trademarks and logos belong to their respective owners and are used here for identification only. Always confirm critical specs against the official documentation before spending budget.
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