From January 31, 2027, every product image you send to Google Merchant Center has to be at least 500 × 500 px. That covers the main image (image_link) and every additional image (additional_image_link), across all product categories and all of Google's marketing methods. Google started showing warnings for smaller images on April 14, 2026. To fix it, find the flagged products under Needs attention, re-export those images from your master files at a larger size, and resubmit the new links in one feed update.
Last checked: October 10, 2026, on Google's Merchant Center Help pages listed under Sources.
What the rule is
Google's 2026 product data specification update raises the minimum resolution for image_link and additional_image_link to 500 × 500 px "across all product categories and marketing methods." The update page gives two dates: warnings in Merchant Center "starting April 14, 2026," and "enforcement starting on January 31, 2027."
Until then, Google's "Image too small" page allows 100 × 100 px for non-clothing and 250 × 250 px for clothing.
Miss it and Google is direct: "we disapprove products when they don't provide an image with the right dimensions." A disapproved product doesn't show in Shopping ads or free listings until it's fixed.
One note on dates: the update page says warnings started April 14, 2026, while the "Image too small" page says "Starting July 2026 you will see warnings." Both agree on enforcement: January 31, 2027.
| Rule | Requirement (as of October 2026) |
|---|---|
| Minimum size | 500 × 500 px, enforced from Jan 31, 2027 |
| Minimum until then | 100 × 100 px (non-clothing), 250 × 250 px (clothing) |
| Applies to | Main and additional images, all categories |
| Recommended size | 1,500 × 1,500 px or above |
| Maximum | 64 MP, 16 MB per file |
| Formats | JPEG and WebP recommended; PNG, GIF, BMP and TIFF supported |
Who is affected
Anyone whose feed points at an image under 500 px on either side. Google doesn't single out a merchant type.
Google also says it will "begin optimizing some images that are smaller than 500 x 500," and that optimized images are marked with a warning in Needs attention. That's a safety net Google applies to "some" images, not a promise for yours. We wouldn't plan a catalog around it.
[Image to add: Square card: "Google Merchant Center, from Jan 31, 2027: 500 × 500 px minimum for main and additional images", with a 400 px image failing and a 2,000 px image passing]
How to find affected items in Merchant Center
Google's update page gives the path:
- Open your Merchant Center account and go to the Needs attention section.
- Click View history.
- Look for the warning Image too small for upcoming enforcement.
Google's "Image too small" page adds the bulk route: filter Products > Needs attention for the affected products, then download the affected-products list as a CSV. That CSV is your work list. Changes can take 24 to 72 hours to show up on the Needs attention page after you fix them, so don't re-run the check the same afternoon.
[Image to add: Annotated screenshot of the Needs attention view in Merchant Center, with the "Image too small for upcoming enforcement" warning and the download button marked]
Why small images exist in the first place
Almost nobody shoots a 400 px product photo. Small images are made later, by something that wasn't thinking about Google:
- Old catalogs. Products listed years ago, when a few hundred pixels was normal, and never revisited because they kept selling.
- Scaled exports. Someone exported a web-sized version for the storefront, and that file became the one everyone uploads. Every channel version after it is a copy of a copy.
- CDN thumbnails. The feed points at a resized URL from your store's image service (a grid thumbnail or a "small" size) instead of the full file. The original on the server may be large; the link Google fetches isn't.
Check the third one first: the fix may be a feed change, not a new image.
See the house spec on paper. The free sample of The Product Photography Machine includes the Introduction, Chapter 1 (which puts the image rules for Amazon, Google, eBay, Etsy and Shopify side by side) and the File naming worksheet. Get it at productphotomachine.com/free-sample.
How to fix it in one batch
The fix is a re-export, not a resize. Google's own guidance on small images says to "Avoid submitting thumbnails or scaling images," and its "Image too big" page says "Do not scale up images or submit thumbnails." Stretching a 400 px file to 500 px clears the number, but it adds no detail: the image is the same blur at a larger size.
So split the work list in two.
Images with a master. If you still have the full-resolution file the image came from, make a new Google version from it. Resize down from the master, never up from an old export. Then put the new links in your product data source and resubmit. For a large list, update the image links in the downloaded CSV or your feed in one pass and upload it once.
Images with no master. These go on a reshoot list. If the only copy of a product photo is the small one, there's no honest way to make it bigger. Sort the list by what sells, schedule those products for a shoot and replace the links as the new images are approved.
If your files are named consistently, sorting the two is a lookup: match the product identifier in the CSV to your master file names.
Step-by-step fix checklist
- Open Needs attention, click View history and filter for Image too small for upcoming enforcement
- Download the affected-products CSV
- Check whether the feed's image links point at thumbnails or resized CDN URLs; if so, point them at the full-size files
- For each remaining product, look up the master file by product identifier
- Master found: export a new Google version from the master at 2,000 × 2,000 px, JPEG, high quality
- No master: add the product to the reshoot list; don't enlarge the old file
- Check every new file is at least 500 × 500 px, under 64 MP and under 16 MB
- Keep any AI-disclosure metadata on files that need it
- Update the image links in the feed or CSV and resubmit in one upload
- Recheck Needs attention after 24 to 72 hours
- Book the reshoot for products with no master well before January 31, 2027
The other Google image rules to check while you're there
While you're re-exporting, check the rest of Google's product data specification (as of October 2026):
- No promotional elements or overlays. No calls to action such as "Buy" or "Shop now," no price or shipping details, no promotional text, no barcodes and no added logos.
- No watermarks. Google lists "Stock photo watermarks, copyright symbols, or graphic stamps" among the overlays to avoid.
- No borders, no placeholders such as "Coming soon" graphics and no single photo reused across different products.
- Fill 75 to 90%. Google asks that the product take up "no less than 75%, but not more than 90%, of the full image."
- Show only what's sold. "Don't include any product that's not sold together with the main product."
- Background. Google's specification doesn't set a background color. It asks for "an unobstructed, clean view of the item for sale." A plain white background meets that and also satisfies Amazon, so one file can serve both.
[Image to add: Two-column card: Google's fill range of 75–90% shown as a shaded band, with the house spec's 85% fill marked inside it]
How a house spec keeps you clear of this
The 500 px rule only bites when the file Google gets is the smallest thing in your system. The house spec in The Product Photography Machine makes that impossible.
Every product is finished as one master: 4,000 × 4,000 px, with the product at 85% of the frame. Every channel version is made from that master, in one step, and never from another version. The Google version is 2,000 × 2,000 px, JPEG at high quality, with any AI-disclosure tags kept. That's four times Google's minimum on each side and above its 1,500 px recommendation, and the 85% fill sits inside Google's 75 to 90% range.
When a rule changes, you change one line in the export settings and regenerate every Google version from the masters. Chapter 13 covers doing that with a watch folder.
This doesn't guarantee approval: Google reviews more than pixel size. It does take image size off the list of reasons a product gets flagged.
FAQ
When does the 500 × 500 px rule take effect? Google says enforcement starts January 31, 2027. Warnings began April 14, 2026, according to the 2026 specification update page.
Does it apply to additional images or only the main image?
Both. The update covers image_link and additional_image_link.
Can I upscale my small images to 500 px? Google says to avoid scaling images and not to scale up images. Re-export from the master instead, and reshoot products that have no master.
Will Google fix small images for me? Google says it will optimize "some" images under 500 × 500 px and mark them with a warning. It doesn't say which ones, so treat it as a fallback, not a plan.
What size should I export for Google? Google recommends 1,500 × 1,500 px or above. Our house spec uses 2,000 × 2,000 px, made from a 4,000 × 4,000 px master.
Start with the free sample. The Introduction, Chapter 1 and the File naming worksheet from The Product Photography Machine, free at productphotomachine.com/free-sample.
The full Book + Template Pack ($29.99) adds every chapter plus the channel spec sheet and the resizing-to-export script that makes each channel version from your masters.
Sources
Pages opened October 10, 2026.
