Most localization purchases fail in the same place: the tool is judged on a single demo sentence instead of on the site it has to run. A small shop or blog has no localization team and little patience for a six-month rollout, so the checklist has to be concrete. Below is the order that tends to work. Write your answers down, compare candidates against the same list, and keep the notes with the invoice.
1. Start with the words that must not drift
Build the glossary before you shop. It should hold your brand name, product names, legal entity details, approved translations for key terms, and any phrasing you never want to see. Then ask each vendor how the glossary is enforced: can a term be locked per language, does the tool warn on a conflict, can a human override one sentence without editing the whole page, and can the glossary be imported and exported? A glossary that lives only in a help article is not a feature you can rely on.
2. Design the review loop before the rollout
Decide which pages need a human before publishing and which can be sampled later. In practice, every page that sells, explains a policy, or makes a promise deserves review; the long tail of old posts can be checked in batches. Look for a tool that supports side-by-side editing, comments, and a clear approved or unpublished state. If review happens by emailing text back and forth, it will collapse the first busy week.
3. Read the pricing meter, not the sticker price
Localization is usually metered, and the unit matters more than the headline number.
| Meter | What to ask |
|---|---|
| Per character | Do spaces and markup count? Is an edited page billed again? |
| Per word | Are repeated strings counted? How are small updates priced? |
| Per page or URL | What counts as a page? Does a re-scan rebill it? |
| Language slot | Per language per month? Is review included? |
| Add-ons | SEO tags, extra reviewer seats, storage, overage rates? |
Then build two estimates: an ordinary month and a month when you publish a lot. The plan should stay predictable in the second case, because that is when you need it.
4. Ask where the content goes
A translation tool sees drafts, product copy, and sometimes customer material. Ask where text is stored and processed, how long it is retained, whether it is used for model training, and whether that can be switched off. Check who inside the workspace can read drafts, whether access is logged, and how deletion works when you remove a page. Confirm that free and paid tiers follow the same rules. If you translate anything regulated, bring in the person who owns privacy before the trial.
5. Confirm the CMS integration does real work
The integration is not a logo on a landing page. Check that the tool handles your theme, menus, navigation, structured data, and URL structure. Ask what happens when the original changes: does the translation update, wait for review, or break silently? Confirm that translated URLs are stable and that you can export everything if you leave. A tool that traps years of translated content inside a plugin you cannot migrate away from is an expensive kind of convenient.
6. Get search right: hreflang and a clean index
Two search problems sink translated sites. The first is missing hreflang, so search engines treat language versions as duplicates instead of alternates; make sure the tool emits correct hreflang clusters, including a sensible default. The second is auto-indexing. A plugin that publishes forty rough languages at once can fill search results with machine text nobody approved. Keep machine output out of the index until it is reviewed, publish deliberately, and check the sitemap lists only the versions you launched.
7. Draw a clear line for AI
Some content should not be machine-first. Legal terms, safety or medical statements, sensitive support replies, and high-stakes brand copy are better handled by a professional translator. Very short, highly branded lines may also be faster to write by hand than to repair. Use AI where it earns its place: product descriptions, help articles, older posts, and the pages that need to exist in ten languages but do not need to be perfect on day one.
8. Test on real pages, not in the editor
Translate a small sample and inspect it in a browser, on desktop and phone. Check a product page with a long title and a price, a blog post with headings and a quote, the navigation and footer, and the labels on a checkout or contact form. Watch for overflowing buttons, broken line breaks, wrong currency or date formats, and images that still contain English text. Save screenshots so you can compare the next candidate fairly.
Final check
Before you commit, confirm the glossary survives, the review loop is usable, the meter is predictable, the privacy terms are acceptable, the integration is not a dead end, and search will not be polluted by unreviewed output. A curated directory such as AI Finder Plus can help you assemble a shortlist, since it groups 500+ AI tools into 10 category groups and lets you search by tag. Then run the sample pages and a supervised pilot. The right tool is the one that makes a second language feel like part of the shop, not a separate project.
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