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HTML Syntax Error Detector

Scan your ad tag to check if it has syntax errors.

Collect 32+ data points and validate against IAB ad guidelines

Go ahead, just
copy/paste your tag !
HTML5 Zip
Ad Tag
VAST
Video
Image
Audio

Syntax Errors

This checks for any errors in the syntax of the HTML, CSS, or JavaScript in the ad.

Why do we test it?

Syntax errors can prevent the ad from rendering correctly or functioning as intended, leading to missed impressions or poor user experience.