Translating a Shopify theme is a separate job from translating your products. Theme text — buttons, labels, section headings, form prompts — lives in the theme, and Shopify's Translate & Adapt reaches some of it but not all. Two things it explicitly does not reach are collection filters and the language selector, and both are theme components.
That split is why a store can look fully translated on its product pages and still show English on a filter, a form or a switcher.
What the app reaches, and what it does not
Translate & Adapt localises theme-related content including theme logos, alongside products, collections, pages, blog posts and policies. What Shopify documents it cannot translate: collection filters, content created with the Shopify Forms app, manual payment method instructions, product images and tags.
The language selector is the one that surprises people most. Shopify states it directly: “Language selectors are part of your theme, and aren't a part of the Translate & Adapt app.” So the control your shopper uses to change language is never the translation app's responsibility. Your options for it are covered in Shopify language switcher options.
The two-language ceiling applies here too
Translate & Adapt auto-translates a maximum of two languages. That ceiling is not per content type — it is the whole store. So a theme translated into two languages for free is the end of the free tier, not the beginning of it.
When automatic translation runs again it fills gaps rather than overwriting your work: Shopify's documentation says it “will not change any translations that you have added, or edited, manually”. That matters more on theme strings than anywhere else, because theme text is where hand-tuning is most common and most easily lost.
Where the real cost sits
Theme translation is a one-off. The recurring cost is everything downstream of it: each new collection, page and product needs to exist in every language, and each theme update can introduce new strings. On a manual workflow that is a job with no owner. With continuous localisation it is not a job at all — add a product on your source store and it is live in every language without anyone touching it.
It compounds, and it shows up in the numbers: Rodier lifted organic revenue 22% across eight markets on a continuously localised store, and across 40+ merchants translated stores lifted conversion by an average of 40% at launch, individual results between 15% and 100%.
If you are choosing tooling rather than configuring what you have, the best Shopify translation apps guide sets out the three architectures and what each structurally reaches. For the layer below the theme, see translating Shopify product pages.
Frequently asked questions
Where does Shopify theme text live?
In the theme itself. Translate & Adapt reaches theme-related content including theme logos, but some theme components — notably collection filters and the language selector — are documented as outside it.
Can I translate my Shopify language selector with the app?
No. Shopify states that language selectors are part of your theme and are not part of the Translate & Adapt app.
Will re-running automatic translation overwrite my theme edits?
No. Shopify's documentation says automatic translation will not change any translations you have added or edited manually.
Do collection filters get translated?
No. Collection filters are on Shopify's documented list of content Translate & Adapt cannot translate.
