Is there an AI for translating documents?

How to translate a PDF and keep the layout

Upload the PDF itself, not a copy of its text. A document translator reads each block of text, translates it and writes it back into the same spot on the page, so headings, tables and page breaks stay where they were. Paste the same text into a chat window and you get the words back with none of the layout.

Three things still go wrong. Translations run longer: a long English sentence grows by about 30% going into a European language, so text overflows its box or shrinks to fit. Text that is part of an image, like a chart label or a scanned page, gets skipped unless the tool reads it first. And file caps bite: the free web option in the list stops at 10 MB and 300 pages. If you still have the Word file the PDF was made from, translate that instead.

Translating a document in Google Docs or Word

If the file already lives in Google Docs, you need nothing else. Open it, choose Tools, then Translate document, name the copy and pick a language. The translated copy opens in a new window and is saved to your Drive; the original stays untouched. It is free with a Google account. If the menu item is missing, you are editing an Office file, so convert it to a Google Doc first.

Word has the same button under Review, then Translate, then Translate Document, and it opens a translated copy in a separate window. It needs a Microsoft 365 subscription or Office 2021, an internet connection, and Office's connected experiences switched on. Both are fine for a document you only need to understand. Neither help page mentions a glossary or a tone setting, and that is most of what the paid tiers above sell.

Free ways to translate documents, and where they stop

You can translate a document for free today, within limits. The free web translator in the list takes Word, PDF, PowerPoint and Excel files up to 10 MB, on a computer only. The other tools give you a taste: one file a month, 5,000 words a month, or five pages, which is enough to test them on your own document before you pay.

The real price of free is your text. At least one free tier in the list may keep what you upload for a while to train its models, while its paid plan deletes the file once the translation is done. For a lease, a payslip or a medical report, one month of a paid plan is cheap insurance. For short text rather than files, a general chatbot does the job too, and our comparison of the free translator against a chatbot covers when each one wins.

AI translator or a document translation service?

Pay a human when someone else will rely on the translation: an immigration file, a court case, a contract you are about to sign, instructions about medication. US immigration rules ask for a full English translation that the translator certifies as complete and accurate, plus a statement that they are competent to translate it. Software cannot sign that. If your document is already in English and the problem is the legal language, that is a different job.

Machine translation also gets worse away from the big languages. A 2021 study of emergency room discharge instructions found a free machine translator kept the meaning of 94% of phrases in Spanish and only 55% in Armenian. The sensible split: run the AI version yourself to understand the whole document, then pay a translator only for the pages that have to be official. One tool in the list also sells human translation, at €0.06 to €0.15 a word.

translating documents: quick answers

Is there a free AI translator?

Yes. The free web translator in the list handles typed text and whole Word, PDF, PowerPoint and Excel files up to 10 MB at no cost. The other tools above have free allowances counted in files, words or pages a month. Check what a free tier does with your upload before you send anything private: at least one of them uses it to train its models.

How do you translate a Word document?

In Word itself, go to Review, Translate, Translate Document, and a translated copy opens in a new window; it needs Microsoft 365 or Office 2021. Without that, upload the .docx to any tool in the list and download it back translated, formatting included. For a Google Doc, the same thing is under Tools, then Translate document.

Can an AI translator give you a certified translation?

No. For US immigration, a certified translation is a human translator's signed statement that the translation is complete and accurate and that they are competent to translate it. Some services start from a machine draft, but the signature is always a person's. Courts, universities and other countries can add their own rules, so ask whoever requested the translation what they accept.

Can AI translate a scanned document?

Yes, if it reads the text off the image first. The free web translator in the list does not: text in scanned pages comes back in the original language. Some of the other tools above handle scanned PDFs; check every name, number and date against the original afterwards. Handwriting is a separate problem.

What is the best AI translator?

For documents, the one that gives you back your own file, in its layout, in your language pair. Quality depends on the language more than people expect: in the hospital study above, the same translator kept the meaning of 94% of phrases in one language and 55% in another. Use the free allowances to run the same two pages through two tools and compare the sentences that matter.