Can I use Google Translate to check a professional translation?

Google Translate can provide a rough idea of the content, but it often misses subtle nuances and technical accuracy. Use it for a basic 'sanity check' only, not for verifying legal or high-stakes business documents.

What is a 'certified' translation?

A certified translation includes a signed statement from the translator or agency testifying that the translation is a true and accurate representation of the original document. This is often required for official government or legal use.

Why does my translated document have more words than the original?

This is known as 'expansion.' Some languages, like Spanish or French, naturally require more words to express the same idea than English. A 15-20% increase in word count is common and does not necessarily mean the translation is inaccurate.

Blog · DocumentChecker

How to check that a translation matches the original document

18 August 2026 · 3 min read

Receiving a translated document is only the first step. Before you use it for legal, medical, or business purposes, you must verify that the content remains faithful to your original file. A poor translation can result in more than just linguistic errors; it can lead to missing clauses, incorrect numerical data, or lost formatting that changes the context entirely. This guide outlines the practical steps you can take to ensure your translated document is a precise mirror of the source, even if you do not speak the target language fluently.

Visual and structural verification

The most basic way to check for accuracy is a side-by-side structural comparison. A professional translation should follow the layout of the source document. If your original has ten paragraphs and the translation has eight, content has likely been merged or omitted.

Check all 'hard' data points that do not change between languages. This includes dates, currency figures, telephone numbers, and proper nouns. If these values differ, it suggests a lack of attention to detail that may extend to the text itself. Pay close attention to table headers and image captions, as these are frequently overlooked by translators focusing solely on the body text.

Using back-translation for meaning

Back-translation involves taking the translated text and translating it back into the original language using a different translator or a high-quality machine translation tool. By comparing the 'new' version with your original, you can spot areas where the meaning has drifted.

While the wording will never be identical, the core concepts should remain the same. If the back-translation introduces new ideas or fails to capture specific instructions, the original translation needs a second review.

Use a neutral third party for the back-translation to avoid bias.
Focus on technical terminology and industry-specific jargon.
Look for tone shifts, such as a formal instruction becoming overly casual.
Identify any cultural nuances that may have been lost or misinterpreted.

Spotting omissions and formatting errors

Translation processes often involve moving text between different file formats, which can lead to accidental deletions. Bullet points, footnotes, and headers are particularly vulnerable. You should verify that the pagination remains consistent and that all links or references point to the correct sections.

Manual checking is time-consuming and prone to human error, especially with long contracts or technical manuals. To streamline this, you can use specialised tools like DocumentChecker. It allows you to compare documents and source files to spot mismatches, omissions, and accuracy issues instantly, ensuring nothing was lost during the translation process.

Verifying a translation requires a methodical approach to checking both the linguistic meaning and the physical structure of the file. By combining manual reviews with automated comparison tools, you can ensure your translated documents are reliable and professional.

Quick answers

Can I use Google Translate to check a professional translation?: Google Translate can provide a rough idea of the content, but it often misses subtle nuances and technical accuracy. Use it for a basic 'sanity check' only, not for verifying legal or high-stakes business documents.
What is a 'certified' translation?: A certified translation includes a signed statement from the translator or agency testifying that the translation is a true and accurate representation of the original document. This is often required for official government or legal use.
Why does my translated document have more words than the original?: This is known as 'expansion.' Some languages, like Spanish or French, naturally require more words to express the same idea than English. A 15-20% increase in word count is common and does not necessarily mean the translation is inaccurate.