Ad Size Validator & Fixer

Stop getting rejected by ad platforms. Upload your banner to instantly validate its dimensions. If it’s wrong, use our Integrated Fixer to crop and resize it perfectly in one click.

✨ AI Layout Assistant: After fixing your size, click the purple button to get a prompt for ChatGPT to analyze your visual hierarchy for better conversions.

Validate Dimensions & Auto-Crop to Ad Standards

Click to Upload Banner
(JPG, PNG, WebP)

Target Ad Standard

No Image Uploaded

Current Dimensions

0 x 0

✅ Design Prompt Copied!

Legal Disclaimer: This calculator provides estimated results based on simplified advertising and profitability models using the data you enter. Actual performance may vary due to attribution models, delayed conversions, platform reporting differences, costs not included here, and business-specific factors. This tool is provided for informational and educational purposes only and does not constitute financial, marketing, or business advice. By using this calculator, you acknowledge that WebBannerExperts.com is not responsible for decisions, actions, or outcomes resulting from the use of these estimates.

Frequently Asked Questions

Why do ad sizes have to be exact?

Ad networks like Google and Facebook use automated systems. Even being 1 pixel off can result in an immediate “Disapproved” status, wasting your campaign launch time.

Does resizing lower my image quality?

Our Integrated Fixer uses smart-cropping to maintain the original aspect ratio, ensuring your graphics remain sharp while meeting the platform’s strict requirements.

What are the most common ad sizes?

Most display campaigns rely on the “Big Three”: The Leaderboard (728×90), the Medium Rectangle (300×250), and the Facebook Feed Ad (1200×628).

How does the “Integrated Fix” work?

If our validator detects an error, it opens a canvas where you can auto-crop your image to the correct dimensions without ever leaving the page.