SHARC: the standard meant to replace SafeFrame and MRAID1:05
Ad tech explainers

SHARC: the standard meant to replace SafeFrame and MRAID

1:05 · November 11, 2026

One expandable ad, built twice. Once for apps, once for websites.

Lesson notes

One expandable ad, built twice. Once for apps, once for websites.

SHARC, the Secure HTML Ad Rich-media Container, is the IAB standard meant to merge both.

Here’s the problem. Rich media ads, the ones that expand, must talk to the page around them. Apps use M-RAID. Websites use SafeFrame. Two rulebooks, so creatives got built and tested twice. SHARC proposed one container. The ad asks it to resize, open a link, or close, and the container approves or refuses. The ad can’t read your page. Tech Lab finalized version one in December twenty twenty-two, and lists it as replacing both. In practice, adoption is hard to find, and the reference code hasn’t changed since early twenty twenty-four.

So keep M-RAID support in your app SDK, and check the SafeFrame setting on your Ad Manager creatives.

Next: DSA transparency in the EU bid stream.

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