Free buyer resources
Advertising material preflight checker
Compare a local file, copy and destination URL with the publisher requirements you enter. No account is needed.
Use the local working tool
Your entries stay inside the isolated tool below. The public page counts visits and fixed actions, without receiving your entered text, files or results.
Interpret the results
- Matches and within limit compare entered values only; missing requirements and unreadable dimensions stay unknown.
- A damaged or unsupported image does not receive a dimension pass. Large files still receive a byte comparison without image decoding.
- URL format does not prove reachability, tracking correctness or safety. Dimensions do not inspect every animation frame, color profile, visual content or publisher policy.
- This report does not approve an asset, reserve a placement or establish delivery. Keep the original specification and obtain the publisher’s confirmation when needed.
Prepare a complete creative specification record or use another buyer tool.