//Native networks · Updated November 2, 2026
Native ads on Taboola, Microsoft, Outbrain, Revcontent, MGID and Yahoo
Native ads sit inside the pages people are already reading, so they win on curiosity, not on shouting. The six big US networks sell similar placements with different rules. Here is how they compare, what is winning on each, and the specs and rules that matter.
Pick a network
- Taboola adsWhat’s winning, specs, rejection rules and how to test.
- Microsoft adsWhat’s winning, specs, rejection rules and how to test.
- Outbrain adsWhat’s winning, specs, rejection rules and how to test.
- Revcontent adsWhat’s winning, specs, rejection rules and how to test.
- MGID adsWhat’s winning, specs, rejection rules and how to test.
- Yahoo adsWhat’s winning, specs, rejection rules and how to test.
Where this week’s top native ads ran
Of the 1,824 most-bought US native ads we read in the week of November 2, 2026, this is how many ran on each network. It shows where the money is concentrated in public native ad libraries, not each network’s total size.
That concentration is why our network pages break Taboola out on its own and use every network’s data for the others when a week has too few of their ads to say anything reliable.
Specs at a glance
From each network’s help pages, checked October 2026.
| Network | Ratio | Image size | Headline |
|---|---|---|---|
| Taboola | 16:9 preferred | 1200 x 674 px | 60 characters or fewer |
| Microsoft | 1.91:1 and 1:1, both required | 1200 x 628 and 1200 x 1200 px recommended | Short up to 30, long up to 90 characters |
| Outbrain | 3:2 | 1200 x 800 px | 60 or fewer recommended (100 max) |
| Revcontent | 4:3 | 1000 x 750 px minimum | No fixed limit, keep it short |
| MGID | 16:9 preferred | 640 x 360 px minimum | Up to 90 characters |
| Yahoo | 1.91:1 and 1:1 (Yahoo DSP native) | 1200 x 627 and 627 x 627 px | Up to 50 characters |
The details and how to make one picture work everywhere: native ad image sizes.
What is the same everywhere
The rules differ in detail but agree on the big things. No suggestive pictures, no gore or graphic conditions, no fake buttons or warnings, no celebrities without permission, and no promise the landing page doesn’t keep. Outbrain’s and Revcontent’s written rules are stricter on split before-and-after frames, Yahoo reviews every before-and-after, Outbrain and Yahoo reject arrows and circles, and Microsoft allows no text on the picture. Let the winners set the bar: what they already run is fair game in the same form, never more extreme. See every rule and its fix.
The other thing that is the same everywhere: ads wear out. In our research, half of the week’s most-bought native ads had been running 21 days or less, so a steady supply of new pictures matters more than any single ad. How long native ads run.
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What is a native ad network?
A company that places ads inside publishers’ pages so they look like part of the site: usually a row of pictures and headlines under an article, labelled as sponsored. Taboola, Microsoft, Outbrain, Revcontent, MGID and Yahoo are the biggest in the US. Advertisers pay per click and buy through each network’s self-serve platform.
Which native network should I start with?
Most advertisers start where most of the spend is. In our weekly research most of the most-bought native ads run on Taboola, so it is the usual first test. Outbrain has the strictest picture rules, so a picture that passes there will usually pass everywhere. Microsoft, Revcontent, MGID and Yahoo are worth testing once you have a winner.
Can one ad run on every native network?
Yes, if it passes the strictest rules. One clean photograph with no text and nothing more extreme than the winners already run, cropped to each network’s shapes (16:9, 1.91:1, 1:1 and 3:2) with the subject in the centre, works on all six. That is how we make every picture.
Do native ads work for small businesses?
They can, especially for offers that need a little explaining, like health products, home services, insurance and Medicare. Native readers are browsing, not searching, so the picture has to stop them. That is why we build every ad on a winning formula from your space.
Keep reading
- Taboola ad specs, explainedTaboola’s image sizes, aspect ratios, file limits, headline and branding text lengths, and how to make one…
- Native ad image sizes for every networkNative ad image sizes, ratios and headline limits for Taboola, Microsoft, Outbrain, Revcontent and MGID in…
- Native ad headlines that keep runningHow long native ad headlines are, and which traits show up more on ads that have run for a month than on…
What’s winning this week, space by space → · Native Winners, free every Monday →
Figures from our research for the week of November 2, 2026: the most-bought native ads in the US from public native ad libraries. They count ads, advertisers, days running and placements, never anyone’s clicks or sales.