ShopTools AI matches coupons using the shopping country. The extension offers manual selection; optional network detection obtains an approximate country code from the IP address without GPS. Interface translation is a separate task.
This proposes an engineering contract for localization. Signal priorities, fields and tests form a reference design, not a full account of current ShopTools. Test each signal independently of the interface language.
Store different signals separately
Separate interface language, selected shopping country, page region, network country and cart currency. A shopper can use English controls while visiting another market from abroad. One locale cannot represent every part of that context.
Return each proposed value with its source and time: manual, page, network or unknown. A delayed network response must not silently overwrite an explicit choice. Make a conflict between the selected market and page context visible.
Define fallback behavior and consent boundaries
Offer an explicit choice to enable network detection and a manual alternative. Declining detection does not stop all product network requests. Ordinary APIs, analytics and AI search need their own data-processing explanations.
If a source fails, use a documented fallback while retaining its provenance. Browser locale can suggest an initial setting, not a delivery address. Set cache expiry and cleanup from the implementation being tested, not an older article.
Unknown must not become worldwide
Normalize feed region fields into one format. Distinguish explicit two-letter country codes, the global marker WW and unknown geography. An empty array must not automatically become eligibility in every country.
- An exact country match identifies a relevant candidate, not verified eligibility for an account.
- An explicitly global offer and a record with no region need distinct model values.
- Exclude offers for another stated country under an explicit rule. Treat unknown geography as uncertain or require clarification.
Amounts and the DOM need localization too
A money parser needs the currency, page format, grouping separators and nonbreaking spaces. Removing every comma and period can change the value. Do not compare a result with a baseline expressed in another currency.
Store minimum spend together with its currency and source. A rough conversion is not an exact eligibility check. Leave an ambiguous amount unknown and do not record savings from it.
Keep separate dictionaries for fields, apply actions, removal and store responses. The word code may refer to a postal code or sign-in challenge. Combine text signals with field type, label and container context.
Test the interface and catalog together
Country names can use Intl.DisplayNames with a fallback to the code. Test searches by localized name, English name and code, including long names. Changing the shopping country should not unexpectedly change the language of the controls.
- Test conflicting manual, page and network countries, including a late response after the user changes the selection.
- Run exact-country, WW, unknown and mismatched offers through consistent popup and page-panel rules.
- Check monetary formats, localized false-positive fields, unresolved placeholders and long labels.
- Compare manifest, popup and content-script keys with store-listing copy. Translation must not strengthen a promise or hide uncertainty.
A locale matrix is not a list of supported shopping markets. A translated button does not establish complete catalog coverage or compatibility with a particular cart. Test those boundaries separately.
By the ShopTools AI editorial team.
Some ShopTools links are affiliate links. ShopTools may earn a commission on a qualifying purchase confirmed by the retailer; a click alone does not guarantee a commission.
Prepared with AI assistance. Product descriptions were checked against ShopTools code and interface; this is not a report of tests at every store.