Google Display ad sizes in 2026: the full spec sheet

TL;DR

• ✅ Build five sizes first: 300x250, 336x280, 728x90, 300x600 and 320x100. They cover the widest slice of Display Network inventory.
• 📊 Uploaded image ads: 150 KB, GIF, JPG or PNG. Animation stops at 30 seconds and must run slower than 5 FPS.
• ⚠️ HTML5 is not open to everyone. Your account needs to be over 90 days old with more than $9,000 lifetime spend, then you apply and wait up to 7 business days.
• 🎨 Performance Max and Demand Gen replaced most of what fixed banner sizes used to do. Both want 1.91:1, 1:1 and 4:5 images at 1200 pixels on the long edge.
• 👉 Seven sizes are regional only. Do not build 930x180 unless you are buying in Denmark.

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Google does not publish a ranked list of best-performing sizes, and any article that gives you one without saying where it came from is guessing. What Google does publish is which sizes are supported across which inventory, and these five have the broadest coverage. That is the honest basis for building them first. Your own placement report is the only thing that will tell you which ones actually convert for you.

All specifications on this page were verified against Google Ads Help on 4 September 2026. Google changes these without announcement, so check the source links before a big build. For what to put inside the frame once you have the dimensions, see Google display ad examples that drive clicks and our collection of banner ad examples.

For what to put inside the frame once you have the dimensions, explore or our guide on digital ad design, or see Google display ad examples that drive clicks and our collection of banner ad examples for some real-life inspo.

All 20 standard Google display ad sizes

These are the sizes accepted for uploaded image ads and HTML5 ads across the Google Display Network, grouped as Google groups them.

Which Google display ad sizes are regional only?

Seven sizes only serve in specific countries. Four of them sit in the standard list above without any label, which is how buyers end up commissioning creative that never serves. Do not build these unless you are buying in the named market.

The three Poland sizes appear in almost no third-party spec guide at all, which tells you how much of the advice on this topic is copied rather than checked. Source: Google Ads Help, uploaded display ads specifications.

What file size can a Google display ad be?

Uploaded image ads are capped at 150 KB in GIF, JPG or PNG. HTML5 and AMPHTML ZIP bundles are capped at 600 KB. Responsive display, Performance Max, Demand Gen and App campaign image assets are capped at 5120 KB, roughly 5 MB, in JPG or PNG.

The 150 KB figure is the one most spec guides get wrong by applying it to HTML5. It is not the HTML5 limit. If a guide tells you your HTML5 bundle must fit in 150 KB, it has confused the two, and you are leaving four times the budget on the table.

What about a responsive display ad?

Responsive display ads take assets rather than finished banners. You upload images, logos, headlines and descriptions, and Google assembles them to fit almost any Display Network slot. This is why the fixed-size list matters less every year, and why responsive display ads now carry most Display campaigns.

Source: Google Ads Help, create a responsive display ad.

Performance Max asset requirements

Performance Max runs across Search, Display, YouTube, Discover, Gmail and Maps from one campaign, and it has no fixed ad sizes at all. You supply an asset group and Google assembles the ads. This is the section most display size guides still do not

All images are JPG or PNG at 5120 KB maximum. Logos with transparent backgrounds are usually rendered on white, so a predominantly white logo on transparency will disappear.

Worth knowing: if you skip video, Google generates one from your other assets automatically. To reach Excellent Ad Strength and stop the auto-generated version running, you have to upload your own in all three orientations. That is the single most common reason a Performance Max asset group looks off-brand in the wild. Getting the creative right matters more here than in any fixed-size format, since you cannot control the crop: see what makes strong ad creative.

Source: Google Ads Help, Performance Max specs and format requirements.

Demand Gen asset specifications

Demand Gen replaced Discovery campaigns and runs on YouTube, the Gmail Promotions and Social tabs, and Discover. The image ratios match Performance Max, but the text limits and asset counts differ, and the logo minimum is larger.

The 30-character headline rule is the trap here. Demand Gen allows 40 characters, but if none of your headlines comes in at 30 or fewer, Ad Strength drops to Incomplete and the ad cannot serve on Display. Source: Google Ads Help, Demand Gen specs and format requirements.

App campaign asset specifications

App campaigns no longer use fixed interstitial pixel sizes. Assets are specified by ratio, and Google assembles ads across Search, Google Play, YouTube, Discover and the Display Network.

Note the App campaign vertical spec is 1200 x 1500, not the 960 x 1200 used by Performance Max and Demand Gen. Both are 4:5, so one master file at 1200 x 1500 covers all three. Videos must be uploaded to YouTube before use. Source: Google Ads Help, App campaigns specs and format requirements.

HTML5 and animated display ads

HTML5 ads accept a ZIP of up to 600 KB containing a maximum of 40 files, with all assets referenced by relative path. Animated GIF ads are capped at 150 KB, must stop animating after 30 seconds, and must run slower than 5 frames per second.

The part almost no spec guide mentions: HTML5 access is gated. Google requires your account to be more than 90 days old, to have spent more than $9,000 USD in its lifetime, and to have a clean policy history. You then apply and wait up to 7 business days. Accounts with more than $1,000 lifetime spend and a good payment history may also be approved. If you do not qualify, AMPHTML ads and responsive display ads are the fallback.

A few limits that catch people out when building in Google Web Designer: images must be local files inside the ZIP rather than references, only Google web fonts are supported, expandable ads are not supported, and local storage cannot be used. External references are blocked except for Google Fonts and Google-hosted CreateJS, GreenSock and jQuery. If you are choosing a build tool, we compared the options in ad design software.

How many display ad sizes should you actually build?

If you are running a Display campaign with uploaded ads, build the five above, then add 970x250 and 160x600 if you have desktop-heavy inventory. Seven files covers most of what you will serve. The wider context on how these fit a campaign is in our guide to Google Ads.

If you are running Performance Max or Demand Gen, forget pixel sizes and build three master crops: 1.91:1, 1:1 and 4:5, each at 1200 pixels on the long edge. That single set feeds Performance Max, Demand Gen and App campaigns.

If you are doing both, produce the three master crops first, then cut the fixed banners from the same artwork. Doing it the other way round means recropping banners into ratios they were never composed for, which is how you end up with logos sliced in half. The same principle runs through all digital ad design.

If you are shipping ads weekly, the set above is a recurring production job, not a one-off. That is the point where a designer who already knows the specs is cheaper than briefing them each time. This is what performance marketing design looks like in practice, and it sits alongside the rest of your paid media work.

Frequently asked questions

Bottom line

Build three master crops at 1.91:1, 1:1 and 4:5, then cut your fixed banners from the same artwork. ✅ That one set feeds Performance Max, Demand Gen and App campaigns, and the five fixed sizes worth having (300x250, 336x280, 728x90, 300x600, 320x100) fall out of it. 

Check the file limit that applies to what you are uploading, because 150 KB and 600 KB are not interchangeable and most guides conflate them.

Producing a full size set every time a campaign changes is a recurring design job rather than a project. We have a list of great ad design services out there that can help you produce high-quality branded ads, with the cadence you require.

ManyPixels covers display ad sets alongside everything else on one subscription, from $699 a month on the Advanced plan, with unlimited revisions and full ownership of the source files.

 Explore ManyPixels plans to see what a daily output covers.