Alt text for product photos that also helps SEO

Six angles of the same sneaker, uploaded to the same listing: front, side, sole, detail shot of the stitching, on-foot, in the box. The alt text field sits empty under all six, because the listing is due in twenty minutes and nobody has time to write six different descriptions of one shoe.

Here's the part that's easy to miss under deadline: Google doesn't see that shoe any better than a screen reader does. Every one of those six photos is a blank rectangle to a crawler until something tells it what's in the frame.

What Google actually does with a product photo

Google's own guidance on image search is direct about this: alt text, combined with computer vision and the surrounding page content, is how it works out what an image shows and which searches it deserves to appear in. Skip the alt text and you're leaning entirely on computer vision to guess — on a page that's also trying to sell a very specific color, material, and style.

That matters more for product photos than almost any other image on your site. A blog header image being vague costs you little. A product photo being vague costs you the exact long-tail search — "cognac leather crossbody bag" instead of just "bag" — that would have sent someone ready to buy straight to your listing.

Specific beats stuffed

The instinct, once you know alt text matters for search, is to cram it with keywords. Google explicitly treats that as spam, not optimization — and it reads badly to the screen reader users who hear it first. The fix isn't more words, it's the right, specific ones:

The habit that quietly wastes all of it

Even teams that write good alt text often make one costly shortcut: writing one description and pasting it across every angle of the same product. That treats six search opportunities as one.

Each shot is doing a different job, so its alt text should too. The front view can carry the full product description. A close-up of stitching or texture should call out the material and craftsmanship a shopper can't tell from a thumbnail. A lifestyle photo should describe the context — who's wearing it, where, doing what — because that's usually the search someone typed to get there in the first place. Filenames help too: Google's guidance specifically calls out that a descriptive filename like cognac-crossbody-bag.jpg gives a small additional clue a generic IMG-4821.jpg never will — worth the extra ten seconds while you're already looking at the image.

Why this is the field everyone skips

None of this is complicated. It's just six times the work of writing one good description, at the exact moment — right before a listing goes live — when nobody has six times the time. That's the actual reason product alt text gets left blank or copy-pasted, not indifference to accessibility or search.

Whatever tool closes that gap for your team, the standard is the same: specific, non-repeating, one real description per photo. Six sentences of actual product detail will out-rank and out-describe one sentence copied six times, every time.