Google emailed Merchant Center accounts last week confirming that Merchant Center image size requirements are moving to a 500x500 pixel minimum for every product. Barry Schwartz at Search Engine Roundtable covered the email on August 24. The date attached to it is January 31, 2027, which is five months away and therefore the sort of thing that gets read, nodded at and forgotten.
We would not normally write up a change with a 2027 enforcement date. We are writing this one up because two parts of it are already affecting live accounts, and neither is in the headline.
What is actually changing
Today the minimum is small. Per Google's own troubleshooting doc, apparel needs 250x250 pixels and everything else needs 100x100. From January 31, 2027 there is one number for all categories: 500x500.
The 2026 product data specification update confirms it applies to both the image link and additional image link attributes, and that warnings started appearing in Merchant Center on April 14, 2026. The troubleshooting doc gives July 2026 as the point where warnings extended to images that clear today's minimum but fall short of 500x500. Either way, if you have undersized images, your account has been telling you for months.
Worth noting what Google actually recommends rather than what it requires. From the same doc: 1500x1500 or above for best performance across all listing formats. The 500x500 figure is a compliance floor, not a target.
Part one that is already live: YouTube Shopping on TV
Buried in the same troubleshooting page is a line with no 2027 date on it: for YouTube Shopping ads, images must be at least 500x500 pixels to serve on TV.
That is present tense. If you are running Performance Max or Demand Gen with a product feed attached, and your images sit at 250x250, those products are not eligible for the connected TV surface right now. You will not see a disapproval, because the product is perfectly compliant everywhere else. You will just quietly not appear in a placement you are paying into. Connected TV is not usually where ecommerce accounts make their money, but silently missing inventory is the kind of thing that never shows up in a report because there is nothing to report.
Part two that is already live: Google is editing your images
This is the part worth your attention. From the product data specification update:
“We will also begin optimizing some images that are smaller than 500 x 500. Importantly, these optimized images will meet the new image requirements and will prevent product disapproval without any action from you.”
Read as risk management, that is generous. Google is upscaling undersized product images so your products do not get disapproved in 2027.
Read as an advertiser, it is a creative decision made on your behalf. In Shopping and in the product grid inside Performance Max, the image is not part of the ad. The image is the ad. There is no headline doing heavy lifting, no primary text, no video hook. There is a photo, a price and a merchant name, sitting next to eleven competitors doing the same thing. An algorithmically enlarged 200 pixel photo will meet the requirement and will still look worse than the competitor who shot at 2000 pixels, and that difference shows up as click-through rate.
Google flags these products so you can find them. The warning is Image resolution optimizations applied, and it is separate from Image too small for upcoming enforcement. Most people will never look, because neither one stops a product serving. The fix is the same in both cases: submit a genuinely larger image and Google stops making the call for you.
We have written before about creative being the real constraint on paid accounts. Shopping is the purest version of that argument, and this change hands part of your creative to an upscaler unless you intervene.
Who this hits hardest
Three groups, in order.
Anyone on an older store or a migrated catalogue. Product photos uploaded five years ago to a theme that displayed them at 300 pixels are still sitting in the feed at 300 pixels. Nobody has had a reason to look.
Anyone with supplier or dropship imagery. If your images come from a manufacturer feed or a distributor portal, you did not choose the resolution and you may not control it. That is a sourcing conversation, and five months is enough time to have it. It is not enough time to have it in January.
Long-tail catalogues. The hero products are usually shot properly. It is the six hundred variants and discontinued lines that carry the small images, and in most accounts the long tail is where a surprising share of Shopping revenue actually sits.
Four things to do this week
Pull the list, do not eyeball it. In Merchant Center, go to Products, then the Needs attention tab, then View history. Look for the orange warnings Image too small for upcoming enforcement and Image resolution optimizations applied. Click View fix, then Download impacted products. That gives you a real number instead of an impression.
Treat the optimised list as urgent and the too-small list as scheduled. Products Google has already upscaled are running with degraded creative today. Products merely flagged for 2027 are fine until 2027. Those are different priorities and most teams will conflate them.
Fix at the source, not in Merchant Center. Re-uploading a bigger image through the Merchant Center interface fixes one product until your next feed sync overwrites it. The durable fix is larger images in the product data source, which for Shopify and WooCommerce stores means the original upload. Aim at 1500x1500, not 500x500, so you are not repeating this in two years. Google's guidance also asks that the product fills no less than 75% and no more than 90% of the frame, which is worth checking while you are in there.
Use Product Studio only where you have to. Google's Product Studio can increase resolution and is available in Merchant Center and in the Google & YouTube app in Shopify. For a discontinued line where the original file is genuinely gone, that is a reasonable answer. For your top fifty sellers, reshoot or re-export. An upscale of a bad file is still a bad file.
The honest summary
The 2027 deadline is not the story. The story is that Google has started making creative decisions on undersized product images in the meantime, and it is doing so in the one ad format where the image carries the entire commercial argument. The compliance work is trivial. Whether your product imagery is good enough to win a click against eleven competitors is a different question, and this is a reasonable prompt to ask it.
If you are not sure what is sitting in your feed right now, or whether your Shopping and Performance Max spend is going into products that look like the competition or look worse than it, that is one of the things our free 15-point Profit Audit checks, alongside signal health, bidding setup and whether your reported results survive contact with your bank account. You keep the findings either way.