About Studio creatives

Different media agencies have different specs depending on the publishers and networks they work with. Make sure to get the most up to date specs from them. Publishers are changing slowly.

Review the IAB's creative format guidelines for their recommendations:

IAB Display & Mobile Advertising Creative Format Guidelines

There are many online tools that allow you to check browser-specific support, including w3schools and caniuse.com.

See our guide for tips: Reduce HTML5 file size

Yes, a backup image is still required for HTML5 ads. When JavaScript is disabled in your browser, a backup image ad is served.

We’re working closely with the IAB and publishers to remove popular JavaScript libraries from file size calculations, however the final decision is ultimately up to each individual publisher and the specs they enforce.

We're working to launch HTTP live streaming (known as HLS) or adaptive bitrate streaming for videos transcoded by Asset Library.

Studio supports uploading font files into Asset Library (EOT, TTF, WOFF, OTF). You can then use the CSS @font-face rule to apply custom fonts to your creative. However, the fonts are loaded along with the creative assets, which increases file size.

The Google Web Designer team is working on a pilot program in which custom fonts are stored on the Google Cloud Font CDN. Contact your Google Marketing Platform sales representative if you're interested in being a part of the pilot. The team has a goal to include this feature as a built-in function of Google Web Designer. Check the release notes to learn about new features as they're added.