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HTML5 validator

Upload your HTML5 banner .zip and check whether it meets what ad servers usually require: weight, main file, clickTag and external assets. The clickTag is the variable that tells the banner where a click leads.

Drop your .zip hereA .zip with your HTML5 banner (a main .html file and its assets). Maximum: 50 MB.or try a sample .zip (the second one has errors on purpose):The review runs in your browser.

What it checks

Main fileThat an HTML file exists at the root of the .zip.
WeightHow much each file weighs and the total, against the limit you enter.
External assetsWhether the banner loads anything from outside the .zip (images, fonts or scripts from another site).
clickTag and sizeThat the click uses clickTag and that the ad.size tag declares the size.

Questions about the tools

Which weight limit should I enter?

Your platform's. Each one publishes its own and changes it over time, so we do not set it for you. Check its documentation.

Are the tools free?

Yes. Use them as many times as you like, at no cost.

What file do I need?

The review tools ask for a .zip with an HTML5 banner: a main .html file and its assets. The others do not ask for any file.

Does it work for banners made with another tool?

Yes. It reviews any HTML5 banner, not only BannerMotion ones.

Is my file stored anywhere?

The review runs in your browser. One exception: if your banner requests external assets (for example, a font), your browser will request them from those sites while you view the preview.

Do I need an account?

No. No tool asks for an account. In the size guide, the email is optional.

Other tools

Preview a .zipclickTag testerWeight calculatorSize guide in PDFTools

Create videos, banners and animations from a sentence.

Today you export HTML5 banners as .zip, with optional MP4, GIF, or PNG/JPG image. Videos and animations: Coming soon.

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