Shopify Alt Text for Product Images — How to Write It in Bulk

Key takeaways

• Alt text describes the photo for people who cannot see it. Search engines read the same string. Write the picture, not a keyword list.
• Shopify stores alt on each media file. Imports and CSV uploads usually leave it blank. The filename is not alt text.
• Name the product, the angle, and one visible fact. Decorative theme chrome can stay empty on purpose.
• Do not paste the product title onto twelve photos of the same SKU.
• Bulk-generate after five handmade examples. Rankly writes alt in 16 languages inside the plan’s AI credits.

Alt text is the written stand-in for a photo. If the image does not load, if the shopper uses a screen reader, or if a crawler is trying to understand a packshot, the alt string is what they get.

Shopify does not write it for you. CSV imports, most dropshipping feeds, and a phone dump into Products → media leave alt blank. The filename IMG_2048.jpg is not a description. Neither is pasting the product title onto twelve angles of the same shirt.

This guide is how to write Shopify alt text that describes the photo, how to keep it unique per file, and how to do that in bulk without inventing facts.

What alt text is for (and what it is not)

Alt has two honest jobs:

1. Access. A screen reader should be able to say what is in the picture. “Image” is not enough. “Product” is not enough.
2. Context for machines. Google Images, Shopping surfaces, and AI systems that quote a page use alt as a hint when the pixels are ambiguous.

It is not:

• A second meta title
• A place to dump every keyword you did not fit in the title tag
• A caption you also show on the page (captions are visible; alt is the text of the image)
• A ranking cheat. Empty alt on a well-structured product page is a miss. Keyword-stuffed alt on a thin page does not save it.

If the product description is two sentences of fog, fix that first. The CRO Audit for Shopify stores fails a product when catalogue copy is under 100 characters. Alt text on a blank description is a label on an empty box.

Where Shopify stores alt text

There are three places people confuse:

The product-media field is the one this guide is about. Open the product, click a photo, write alt in the side drawer, save.

Videos can have alt too. A 6-second spin of a shoe still needs a sentence: Black leather court sneaker rotating to show the gum sole.

If you replace an image, Shopify often keeps the old alt. Check. A “sand overshirt” alt on a sage photo is a mismatch Google and a screen reader will both trust.

How to write a product-image alt

Describe what a person would see, in the order they would notice it.

A working formula:

[Product] in [colour / material], [angle or context].

Examples (labelled examples, not a live store):

Rules that hold up:

1. Name the product once. Not in every photo of the SKU as a full title tag.
2. Say the angle. Front, back, side, on-body, scale, in-box, detail. That is the information the other eleven photos do not repeat.
3. Name the colour you see. Sage on this file. Sand on the other. Colour is why the files exist.
4. Skip “image of”, “photo of”, “picture of”. The attribute is already alt.
5. Skip the brand unless the logo is in the frame. Harbour in every alt is noise. If the photo is a hangtag with the logo, then say that.
6. Do not write a call to action. Buy now is not in the picture.
7. Do not write a price. Prices change. Alt stays.

Decorative images in the theme (a gold line, a texture behind the footer) should have empty alt so assistive tech skips them. Empty is a decision. Missing on a packshot is neglect.

Filename vs alt vs product title

Three strings, three jobs — same idea as meta titles.

• Filename: harbour-linen-overshirt-sage-front.jpg helps you find the file. Some crawlers glance at it. It is not shown to shoppers.
• Product title: Harbour Linen Overshirt — Sage is the merchandising name.
• Alt: describes this photo of that product.

Pasting the product title onto every image makes twelve identical alts. A screen reader user hears the same sentence twelve times. Google sees twelve files that claim to be the same picture.

If you only have time for one image, do the first packshot. Then the on-body. Then the detail. The rest can wait for bulk.

Bulk alt text on a real catalogue

Native Shopify has no serious bulk alt editor. Options:

1. CSV. Export products, hope your column maps to image alt, re-import, pray you did not attach the sage alt to the sand SKU. Fragile on stores with many files per product.
2. By hand. Fine for 20 SKUs. Not for 2,000.
3. An SEO app that generates alt from the product, the variant, and (if it can see them) the images, then lets you edit.

Rankly generates image alt text with product descriptions and tags, in 16 languages. Free includes alt text inside 100 AI credits. Starter ($9.99/mo) is the bulk tier. Pro ($29.99/mo) can handle alt automatically when products change. Billed in USD through Shopify. Compatible with all themes. It does not promise image-pack rankings.

Before you run bulk on the whole shop:

1. Write alt by hand on five bestsellers. Those five are the style guide.
2. Generate on one collection. Read twenty strings.
3. Kill anything invented: a material you do not sell, a person who is not in the photo, a “studio lighting” cliché on a messy flat lay.
4. Then run the rest.

AI that has not seen the pixels will guess. A white-background packshot described as “on a wooden table” is a lie. If the app is guessing from the product title only, you still need a pass for angle and colour. Prefer tools that look at the image, then still sample the output.

Markets, languages, and alt

Alt should be in the language of the storefront the shopper is on.

A French Market with English alt is an English description of a photo on a French page. Screen readers in that Market will speak English. So will a crawler that thinks the page is fr.

Rankly’s Starter plan adds multi-language SEO and AEO for Shopify Markets. Generate per locale. Do not copy the English alt into every translation and call it done.

Watch false friends. English shell (jacket fabric) is not French coquille. If you do not sell seafood, do not let a model pick the food meaning.

How this shows up in audits

The free ChatGPT SEO check for Shopify stores reads public HTML, JSON-LD, robots.txt and llms.txt. It is not an image-by-image alt linter. A pass there does not mean your media drawer is filled.

The CRO audit can fail product description (A12) when catalogue copy is too short. That fail now points at Rankly. Alt is the sibling job: same catalogue, different field.

Paste a bestseller into the CRO audit, fill empty alts on that SKU, then paste the live URL into the SEO check. JSON-LD, robots and llms.txt fails also name Rankly. Only then run bulk on the long tail.

A labelled bulk example

Example catalogue (labelled example). 40 linen SKUs, four photos each, all alts empty after a CSV import.

Hand-written pattern for SKU harbour-linen-overshirt / Sage:

1. Sage linen overshirt, front packshot on white
2. Sage linen overshirt, back view with yoke and hanging loop
3. Sage linen overshirt on a person, rolled sleeves, mid-thigh
4. Detail of corozo buttons and sage linen weave

Bulk job for the other 39 SKUs: same skeleton, swap colour and product type from the variant. Read a sample of 15. If the generator writes premium luxury linen on a mid-price shirt, strip the adjectives. If it writes woman in forest on a white-background packshot, the model did not see the file — stop the job and switch method.

Tags are a separate field. linen, overshirt, sage, relaxed-fit belong in tags, not stuffed into alt. Rankly can generate tags in the same bulk pass. Keep tags operational (filters, automations). Keep alt visual.

Alt text is a sentence about a picture. Write that sentence. Generate the rest only after five handmade examples prove the pattern. Google Images, a screen reader, and an AI quoting your PDP will all thank you for the same reason: they can tell what they are looking at.

Frequently asked questions