EStore Tools

Product Alt Text Generator

Write alt text for a batch of product images from what you tell it each one shows, in one block per image or as a spreadsheet column for a CSV import.

Describe the result you need. AI will set up the tool and ask for any missing details.

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Your brief

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It writes only from what you give it

The tool can't see your images. Paste one image per line: a URL, a short description, or both. It reads any description you give, pulls readable words out of the file name (skipping things like img_2043 or v2-final), and writes from that plus your product name. An image with nothing useful to go on gets a [describe image N] placeholder instead of a guess.

  • Starts with the product, never "Image of" or "Photo of".
  • Describes the one detail that makes that image different: the angle, the color, a close-up, the product in use.
  • Length: Short (5 to 15 words, under 125 characters) for most images, Detailed (12 to 25 words, under 200 characters) for size charts or images that carry real information.

Up to 25 images per run. If you paste more, the extra ones are dropped and the tool tells you how many to run again.

Why alt text matters

Alt text is read aloud by screen readers, shown when an image fails to load, and used by search engines to understand what's in the image. The W3C's accessibility guidance for informative images is to describe what the image contributes to the page, not just what it visually shows, which is the approach this tool follows.

Adding it to your store

  1. 01

    One image in Shopify

    Go to Products, open the product, click the image, then Edit alt text, paste it in and click Save alt text.

  2. 02

    Many images in Shopify

    Use Spreadsheet column. Go to Products > Export, open the CSV, paste the alt text into the Image alt text column on the matching rows, then re-import with Overwrite products with matching handles ticked. Try it on one product first, since blank cells in columns you include get overwritten too.

  3. 03

    WooCommerce

    Go to Media > Library, open each image and paste the text into Alternative Text. It saves automatically.

Questions people ask

Do I have to give a URL for every image?

No. A short description works on its own; the URL is only used to pull extra hints from the file name. Either one, or both, is fine per line.

What happens if I don't describe an image at all?

If there's no description and no useful words in the file name, the tool writes a [describe image N] placeholder instead of guessing what the image shows.

How long can Shopify alt text be?

Shopify allows up to 512 characters, but suggests keeping it to 125 or fewer, which is why Short is the default length here.

One block per image, or spreadsheet column: which should I use?

One block per image if you're pasting each one by hand. Spreadsheet column if you're updating alt text through a Shopify product CSV.

I have more than 25 images.

Run the first 25, then paste the rest in a second run. The tool tells you exactly how many were left over.

Related tools

Shopify Product Description GeneratorDescribe the product in your own words and get a clean description, ready to paste into Shopify.Product Meta Description GeneratorWrite SEO titles and meta descriptions for a batch of products, with your title budget worked out around your store name suffix so nothing runs long.Google Product Category FinderMatch your products to Google's own product taxonomy, with the exact category ID and full path, matched from real candidates, not guessed by the model.Shopify Image ResizerBatch-resize product photos to Shopify's suggested size, trim the background and pick a shape, right in your browser.

Want this builtinto your store?

I'm Emmanuel, a Shopify and WooCommerce developer. If this tool pointed at something you'd rather have fixed for you (a faster store, cleaner product data, a migration, a custom feature), send me a note.

Emmanuel Asika

Emmanuel Asika

Shopify & WooCommerce developer, Dublin

I build and fix online stores: new builds, migrations, speed, SEO and the custom bits apps can't do.

hello@emmanuelasika.com
See my work

Last reviewed 30 September 2026.

Sources: W3C Web Accessibility Initiative: Images tutorial · WordPress.org: Media Library screen (Alt Text field) · Shopify Help: Using CSV files to import and export products