Google Display Ad Size Checker

Sizes needed for this campaign

What this check covers

This tool reads actual decoded pixel dimensions and file signatures, not dimensions written in filenames. It compares static PNG and JPEG files with Google's main uploaded-display size table and uses a conservative ceiling of 150,000 bytes. Original files are never resized or recompressed here.

A passed check means only that the supported technical checks passed. Content policies, landing pages, account eligibility, regional inventory and ad approval still require review. Selecting a size above is your campaign checklist, not a requirement to supply every listed size.

Animated GIF, APNG and WebP files are not approved by this checker. GIF animation length and frame rate need separate validation; WebP needs conversion to an accepted format. Region-specific additional sizes are outside this first version. Exact duplicate files are identified by SHA-256, not visual similarity.

ZIP exports contain the unchanged files that passed, with exact duplicates omitted. The CSV includes every inspected file and missing campaign sizes. This ZIP is a handoff package, not an HTML5 ad or an assurance that Google will accept a bulk upload.

Specifications checked September 11, 2026: Google uploaded display ad specifications. Responsive display assets follow different requirements, including a 5120 KB file limit.

Questions