Performance Max Assets: Creative, Image Sizes and Ad Copy From One URL
Performance Max gives you almost no levers. You cannot pick placements, you cannot see most of where your money goes, and the asset group is the one thing you still control. Paste a product or landing page URL and Adscreator builds the creative and copy to fill it: landscape, square, and portrait images, short headlines, long headlines, and descriptions, all in one pass.
Flat pricing, no credits · Updated July 2026
Generating ad set
Preparing the studio…
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✓ Resized for every placement in one pass.
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Direct answer
A Performance Max asset generator is a tool that produces the images and text a Google Performance Max asset group needs, without a designer. Adscreator takes a product or landing page URL, writes short headlines within the 30-character limit, long headlines up to 90 characters, and descriptions up to 90 characters, then generates on-brand images and renders them at 1200 x 628 landscape, 1200 x 1200 square, and 960 x 1200 portrait so every required ratio is filled. Each run returns multiple variants, which is what a Performance Max asset group actually wants, since Google mixes and matches assets rather than running a fixed ad. You export the files and upload them in Google Ads. Adscreator produces static images and text, not video.
The problem
A single Performance Max asset group can take up to 15 headlines, 5 long headlines, 5 descriptions, and 20 images across three aspect ratios, and Google keeps telling you your Ad Strength is "Poor" until you fill most of it. Almost nobody does. The typical asset group ships with three headlines and two images, because producing the full set means a designer crops the same photo three ways and a copywriter writes fifteen variations of thirty characters. Then you add a second asset group for a different product theme, and a third, and the work multiplies by the number of themes you wanted to separate in the first place. So advertisers under-fill the asset group, Ad Strength stays low, and the campaign runs on a thinner set of combinations than the system was designed to test.
How Adscreator handles it
Adscreator makes the whole asset group the output instead of a week of production. Paste the product or landing page URL and it reads what you sell, writes the short headlines inside the 30-character limit, the long headlines and descriptions inside 90, and generates on-brand imagery using your colors, logo, and fonts. The same input is rendered at every ratio Google asks for, so the landscape, square, and portrait slots are all filled rather than one image stretched. Because every run returns variants, filling fifteen headline slots is one pass rather than fifteen decisions. Pricing is flat with no credits, so building a separate full asset set for each asset group theme costs the same as building one. Adscreator never connects to your Google Ads account: you review the assets, export them, and upload them yourself.
specs
What a Performance Max asset group asks for, and what Adscreator fills.
These are the asset slots Google specifies for a Performance Max asset group without a Merchant Center feed attached, verified against Google Ads Help in 2026. Required means the asset group will not publish without it. Adscreator generates the static image and text assets from one URL; Google auto-generates video from your assets if you supply none.
| Asset slot | Spec and limit | Required |
|---|---|---|
| Headlines | 30 characters max, at least one 15 characters or less. 3 minimum, up to 15 | Yes |
| Long headlines | 90 characters max. 1 minimum, up to 5 | Yes |
| Descriptions | 90 characters max. 2 minimum, up to 5 | Yes |
| Business name | 25 characters max, matching your domain or verified business name | Yes |
| Landscape image 1.91:1 | 1200 x 628 recommended, 600 x 314 minimum. Up to 20 images total | Yes |
| Square image 1:1 | 1200 x 1200 recommended, 300 x 300 minimum | Yes |
| Portrait image 4:5 | 960 x 1200 recommended, 480 x 600 minimum | No |
| Square logo 1:1 | 1200 x 1200 recommended, 128 x 128 minimum. Up to 5 | Yes |
| Landscape logo 4:1 | 1200 x 300 recommended, 512 x 128 minimum. Up to 5 | No |
| Video | 10 seconds or longer, 16:9, 1:1, and 9:16 | No |
Images upload as JPG or PNG at 5 MB or less. Adscreator produces the image and text assets, not video: if you leave the video slot empty Google will assemble one from the assets you provided, which is worth reviewing before it runs.
In Performance Max the asset group is the targeting
Search campaigns let you argue with the system through keywords, match types, and bids. Performance Max mostly does not. You set a budget, a conversion goal, and an audience signal, and the rest happens inside a model you cannot inspect placement by placement. What you still decide is what the model has to work with, which means your images, your headlines, and how you split themes across asset groups are doing the job that keyword targeting used to do. A single asset group stuffed with every product you sell gives the system one blurred signal. Separate asset groups for separate themes, each with its own complete set of copy and imagery, tell it what each audience should see. That is why filling the asset slots properly is not housekeeping, it is the main lever left, and why the cost of producing assets quietly determines how well structured your campaign can afford to be.
Ad Strength is a completeness score, so treat it that way
Google grades each asset group from Poor to Excellent, and the rating largely reflects how many distinct assets you supplied and how varied they are, not how clever the writing is. Adding the fourth and fifth image ratio, the long headlines nobody bothers with, and headlines that say genuinely different things rather than five rewordings of the same sentence is what moves it. Ad Strength is a guide rather than a ranking factor you can bank on, but a Poor asset group is a real signal that the system has too few combinations to test, and thin combination sets are how Performance Max ends up spending on whatever placement is cheapest. The practical target is every required slot filled, several distinct angles in the headlines, and all three image ratios present so the asset group can serve on YouTube, Discover, Gmail, Display, and Search without falling back on a badly cropped landscape image.
what it uses
The features behind performance max asset generator.
questions
Performance Max asset generator: the questions people ask.
What are the asset requirements for Performance Max?
A Performance Max asset group needs at minimum 3 headlines of 30 characters or less, 1 long headline up to 90 characters, 2 descriptions up to 90 characters, a 25-character business name, a final URL, at least one 1.91:1 landscape image and one 1:1 square image, and a 1:1 logo. You can add up to 15 headlines, 5 long headlines, 5 descriptions, and 20 images. Video is optional and auto-generated if you skip it.
What size should Performance Max images be?
Google recommends 1200 x 628 for the 1.91:1 landscape image, 1200 x 1200 for the 1:1 square, and 960 x 1200 for the 4:5 portrait. The minimums are 600 x 314, 300 x 300, and 480 x 600. Logos are 1200 x 1200 square and 1200 x 300 landscape. Upload JPG or PNG files of 5 MB or less. Adscreator renders all of these ratios from a single input.
How many assets do you need for Performance Max?
The minimum to publish is small, but the practical answer is to fill the slots. Aim for 11 to 15 headlines, 3 to 5 long headlines, 4 to 5 descriptions, and at least 4 landscape, 4 square, and 2 portrait images per asset group. That range is what moves Ad Strength toward Excellent and gives the system enough combinations to test. Most advertisers stop at 3 headlines and 2 images, which is the usual cause of a Poor rating.
What is a Performance Max asset group?
An asset group is a themed bundle of images, headlines, descriptions, logos, and optional video that Performance Max mixes into ads across Search, Display, YouTube, Discover, Gmail, and Maps. It is the closest equivalent to an ad group. You create one per product theme or audience, each with its own complete asset set and its own final URL, so the system serves relevant creative rather than one generic set to everyone.
How do I improve Performance Max Ad Strength?
Ad Strength mostly rewards completeness and variety. Add the missing image ratios, use all five long headline and description slots, include at least one headline of 15 characters or less, and make sure the headlines say different things instead of rephrasing one idea. Adding a video and sitelinks helps too. A flat-priced generator makes filling every slot practical, since the usual reason asset groups stay thin is the cost of producing each extra asset.
How much does a Performance Max asset generator cost?
Adscreator starts at $39 per month on Starter, or $29 per month billed yearly, flat, with no credits and no free plan. Because there is no per-image meter, building a complete asset set for every asset group in the campaign costs the same as building one. Your Google Ads media budget is separate and billed by Google directly.
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