You've localized your product titles and descriptions. You've set up Shopify Markets, maybe even brought in a translation agency. Your French, German, and Japanese storefronts look right. Then a screen reader user visits your French store and hears "red floral dress summer collection" — in English — for every product image.

That's the gap that most multilingual Shopify builds leave open. Alt text is invisible in the UI, it doesn't show up in the translation workflow checklist, and nobody catches it until an accessibility audit lands or a customer complains.

Why alt text gets skipped in multilingual Shopify stores

Shopify's translation tools — whether that's the built-in Translate & Adapt app, a third-party like Langify or Weglot, or manual API work — handle product content pretty well. Titles, descriptions, metafields, variant names: they all flow through the translation pipeline.

Images don't. The alt text fields live on the image objects themselves, and they're a separate thing from your product copy. Most translation tools ignore them entirely. So when you mark your French market as ready to go, every image still has English alt text — or worse, no alt text at all.

This creates two real problems. The first is accessibility: screen reader users in your French or German market are getting English descriptions, which is disorienting at best and completely useless at worst. The second is SEO. Google Images is a meaningful traffic source for product discovery, and it indexes alt text on a per-locale basis. Your French product pages are competing in Google.fr with image metadata that's in the wrong language. That's leaving rankings on the table.

How AltText.ai handles multilingual alt text automatically

When you connect AltText.ai to your Shopify store, you set a default language for your primary market and then add whichever additional languages you're selling in. We support 130+ languages, so whether you're running five storefronts or twenty-five, we have the coverage.

From that point on, every image that enters your store gets alt text generated in all of your configured languages at upload time. Upload a new product image and within seconds there's accurate, descriptive alt text in English, French, German, Japanese — whatever you've set up — already attached to that image before it ever goes live.

For your existing catalog, the bulk generation tool handles the backlog. You point it at your store, select which languages you need, and it works through your image library. Stores with a few thousand products are usually done in a couple of hours. The largest Shopify merchants we work with have pushed through hundreds of thousands of images without issue.

What it actually looks like in practice

Take a women's apparel store selling across the US, UK, Germany, and Japan. They upload a photo of a linen button-down shirt — natural background, full-length shot, two colorways in the frame.

AltText.ai generates something like this across their four markets:

• English: "White and sand linen button-down shirt displayed flat on a neutral background, shown in two colorways"
• German: "Weiß-beiges Leinenhemd mit Knopfleiste, auf neutralem Untergrund flach ausgebreitet, in zwei Farben gezeigt"
• Japanese: "ニュートラルな背景にフラットに置かれた白とサンドのリネンボタンダウンシャツ、2色展開"

Each description starts from a high-quality English source, then gets translated using industry-leading translation services — so every language gets alt text grounded in an accurate, detailed base. The phrasing is natural, not stilted output.

Getting set up

The setup takes about ten minutes. Install the AltText.ai Shopify app, connect your store, and go to the Languages settings. Add each language you're selling in. That's it for new images — they'll get alt text automatically from that point on.

For your existing catalog, run the bulk job from the dashboard. You can filter by product type, collection, or vendor if you want to prioritize certain sections first — helpful if you're working toward an audit deadline and want to tackle your highest-traffic pages before everything else.

Shopify Markets and the translation API

Shopify's Markets feature lets you manage different regions from a single store, with market-specific content overrides. AltText.ai writes alt text directly through the Shopify Admin API's translations layer (via translationsRegister), so the localized alt text gets stored as a content translation — exactly where Shopify expects it, and exactly where tools like Translate & Adapt will pick it up if you're managing other translations there too.

That means your localized alt text doesn't get clobbered when you run a translation sync. It lives in the right place in Shopify's data model and behaves like any other translated content field.

The SEO case

If you're running international Shopify markets, you presumably care about ranking in those markets. Google's image search is locale-aware — it surfaces different results depending on where and in what language someone is searching. Product images with properly localized alt text rank in those local image results.

For product categories where visual search matters — fashion, home goods, furniture, food, outdoor gear — Google Images can be a meaningful acquisition channel. The stores that show up there consistently are the ones that have their image metadata in order across every locale they serve.

Running a multilingual store without localized alt text is essentially opting out of image SEO in every market except your primary one. It's a gap that closes quickly once you automate it.

A note on quality

One thing we hear from merchants who've tried machine translation for alt text: the output is often awkward in ways that are hard to catch if you don't speak the language. Phrases that are technically correct but wouldn't sound natural to a native speaker. Descriptions that read like they were run through Google Translate because they were.

AltText.ai generates a high-quality English description first, then translates it using industry-leading translation services — so every language gets alt text that starts from an accurate, detailed base. The quality of the source description is what makes the difference: better English in means better translations out, in every language.

You can also set custom instructions per language if your brand voice has specific requirements — formal register for certain markets, specific terminology conventions, that kind of thing. It runs on the same prompt system as everything else in the platform.