Insights · Comparison
Spanish edition versus machine translation
A Spanish edition is a parallel set of pages translated by people who know the field, reviewed and signed by a native-speaking expert, published with correct hreflang signals and maintained on the same refresh cycle as the English original. Machine translation is automated output, published directly or behind a translation widget, with no expert review. For a practice whose Spanish-speaking clients make high-consequence decisions, the edition is what earns trust and citations; machine translation without review produces errors a native speaker notices immediately and that engines treat as low-quality duplicates.
At a glance
The criteria that decide it.
| Criterion | Spanish edition | Machine translation |
|---|---|---|
| Accuracy in the field | Translator knows the terminology; expert reviews | Generic; terminology errors common |
| Credibility with native speakers | Reads as written for them | Reads as translated |
| Authorship | Signed by a native-speaking expert | None |
| Engine treatment | A distinct, citable edition with hreflang | Often treated as duplicate or low quality; widgets are invisible to crawlers |
| Regulatory fit | Reviewed like any other published communication | Unreviewed claims in a second language |
| Cost and speed | Higher; proportional to pages | Near zero; immediate |
Criteria
Each one, explained.
Accuracy and credibility
Medical, legal and financial terminology does not survive generic machine translation reliably. A native-speaking reader notices within a sentence, and the practice loses the credibility the page was meant to build. Field-literate translation with expert review is the difference.
What engines do
Translation widgets render in the browser and are invisible to crawlers that do not execute JavaScript, so there is no Spanish page to cite. Published machine translation creates near-duplicate pages the engines deprioritize. A real edition with hreflang is a distinct set of pages the engines can retrieve and attribute.
Regulatory fit
A translated page is a published communication under the same rules as the original. An edition passes the same verification and sign-off; machine output passes nothing.
Where machine translation fits
As a drafting aid under a human translator who knows the field, followed by expert review. That is how editions are produced efficiently. Publishing the machine output directly is where it fails.
Recommendation
Who each option suits.
Build a Spanish edition for the pages Spanish-speaking clients actually need, in priority order, and never publish machine translation without review. Use machine translation only as a drafting tool inside the edition workflow. For US practices this is the most common second edition, and the evidence of demand usually justifies it.
Related
Where this applies.
Sources
Primary references.
By David Selakovic · Published 2026-10-16 · Revised 2026-10-16 · Reviewed every 180 days