Global LTS provides ISO 17100:2015 certified translation proofreading and post-editing services for businesses, law firms, healthcare organisations, and publishers across 120+ languages. Whether you have received a translated document from another agency, need a second-linguist review of an in-house translation, or require professional post-editing of machine-translated content, our native-speaking reviewers ensure your final document is accurate, consistent, and publication-ready. Get a free quote for your proofreading project.
Translation proofreading is the independent review of an existing translated document by a second qualified native linguist. The reviewer works from both the source and target language texts simultaneously, checking that the translation is accurate, complete, grammatically correct, and consistent in terminology and tone throughout.
This is distinct from general English proofreading, which only reviews the target language text in isolation without reference to the source. True translation proofreading requires a bilingual specialist who can verify that nothing has been omitted, mistranslated, or misrepresented from the original.
Machine Translation Post-Editing (MTPE) is the process of reviewing and correcting output produced by AI translation engines such as DeepL, Google Translate, or Microsoft Translator. As machine translation becomes more widely used for internal communications, e-discovery, and large-volume content projects, the need for expert human post-editing has grown significantly.
Raw machine translation output consistently produces errors that are invisible to non-speakers of the target language, including mistranslated technical terms, unnatural syntax, incorrect gender or grammatical agreement, omitted negations, and culturally inappropriate phrasing. Our MTPE service applies light or full post-editing to machine-translated content depending on its intended purpose and audience.
Corrects factual errors, mistranslations, and critical grammar issues. Suitable for internal reference documents, e-discovery file review, or content where perfect stylistic fluency is not required.
Brings machine-translated content up to the standard of a human translation. Addresses accuracy, fluency, terminology consistency, tone, and cultural appropriateness. Suitable for published content, client-facing materials, and regulated documents.
We assess both the original source document and the existing translation to understand the subject matter, register, and terminology conventions used, and to identify the level of review required.
Your file is assigned to a native linguist with verified subject-matter expertise in the relevant field. A legal document is reviewed by a legally qualified linguist. A medical report is reviewed by a medically trained translator. A technical manual is reviewed by an engineering specialist.
The reviewer works through the document segment by segment against the source text, correcting errors in accuracy, terminology, grammar, punctuation, consistency, and tone. All changes are tracked so you can see exactly what was amended and why.
A final consistency check is carried out across the full document to ensure terminology and style are uniform throughout. The reviewed file is delivered in your original format, clean and ready for use.
For documents submitted to courts, government bodies, UKVI, or regulatory authorities, translation proofreading forms part of the certification process. Under ISO 17100:2015, certified translations require a mandatory independent revision step before the Certificate of Accuracy can be issued.
If you need a certified translation proofread and re-certified, or if you require a second-opinion review of a translation already produced by another agency before official submission, our team can provide an independent bilingual review with a fresh Certificate of Accuracy. Learn more about our certified translation services.
Contracts, court bundles, patents, and compliance documents require reviewers who understand jurisdictional legal terminology and statutory phrasing conventions. Errors in legal translation proofreading can alter the enforceability of a clause or the admissibility of evidence. Learn more about our legal translation services.
Patient-facing documents, clinical trial files, and regulatory submissions require medically qualified reviewers familiar with MedDRA coding, ICD-10/ICD-11 diagnostic terminology, and EU MDR/MHRA compliance language. Learn more about our medical translation services.
CAD drawing callouts, operating manuals, Bills of Materials, and safety data sheets require reviewers with verified engineering or technical credentials to ensure that specifications, tolerances, and material grades are rendered correctly. Learn more about our technical translation services.
Annual reports, audit files, and investment prospectuses require reviewers with formal accounting or finance backgrounds to verify that IFRS terminology, numerical tables, and regulatory disclosures are accurate and consistent. Learn more about our finance translation services.
Need an independent quality review of an existing translation or machine-translated content? Contact Global LTS today for a free, no-obligation quote.
Generally, proofreading is less expensive than translation. This is because proofreading involves reviewing and correcting an existing translation rather than creating a new translation from scratch.
However, the cost can vary depending on the complexity of the text and the level of expertise required.
Choosing a good translation proofreading service involves several considerations. Look for services with experienced, native-speaking proofreaders in your target language.
Check their expertise in your specific subject matter or industry. Additionally, read reviews and testimonials to gauge their reliability and quality of work. Lastly, ensure they offer timely delivery and responsive customer service.
We cover over 120 languages. Below are the most frequently requested languages: