How to translate scanned documents into English, instructions on the steps

Key points of this article

Scanned PDFs can be directly uploaded for translation, without having to perform separate text recognition and then translation.
Use bilingual comparison for self-checking, and use translation only for sending to English readers. Both outputs have their own uses.
Professional documents such as papers and contracts should choose corresponding styles and ensure uniform terminology.
Numbers, dates, names and formats are areas where translation errors are easy to make. After downloading, you must compare the originals item by item.
Before the machine translation results are used in formal occasions, key content should be reviewed by someone who understands English.

If you have a Chinese scan in your hand, such as a photographed contract, a photocopied paper, or a stamped certificate, and you need to hand it to an English reader, you will often subconsciously convert it into editable text and then translate it. In fact, the difficulty in translating scanned documents into English is usually not the language direction, but whether the text in the picture can be read correctly. This article is written for students, staff, and researchers who need to process Chinese scanned documents.

After reading this article, you will be able to judge whether the scanned document needs to be processed first, know how to operate step by step in OmniDoc, know what to check after getting the English result, and figure out which scenarios are suitable for bilingual comparison and translation only.

To translate the scanned document into English, do you need to convert it into text first or upload it directly? One sentence conclusion

Directly upload the scanned PDF for translation. OmniDoc supports scanned documents without the need for separate text recognition first. The output form is determined by the purpose: use bilingual comparison to check the content yourself, and use only translation when handed over to English readers.

your situation	Recommended practices	reason
Scanned PDF, I want to check it sentence by sentence.	Select bilingual comparison after uploading	The original Chinese text and the English translation are side by side, making it easy to find omissions and mistranslations.
Scanned PDF should be sent directly to English readers	Select only the translation and then check after downloading	The page is only in English, making it easier for readers to read
Materials in the form of photos or pictures taken with mobile phones	Take photos that are flat and have clear text before uploading	The picture belongs to the supported input type, and the shooting quality directly affects the translation.
Academic papers with many formulas and tables	Choose academic style, choose bilingual comparison	The terminology is more unified, and the positions of formulas and tables are convenient for comparison.
Contracts, certificates and other legal documents	Select the legal style and submit the translation to manual review one by one.	The wording of the terms must be accurate, and the machine translation cannot be directly regarded as the official text.

Before you start: Confirm these points first

Confirm that the document is indeed a scanned copy. Open the PDF and try to select a piece of text with your mouse. If it cannot be selected, or the entire page can only be selected as one picture, it will be a scanned copy. This step determines whether you need additional processing or just upload it directly.
Check whether the page is clear. If you take photos of pages that are blurry, skewed, shadowed, or have the edges cut off, the recognized text will easily be missing, and the translation will also be wrong. Before uploading, flip through a few pages to make sure you can read the key paragraphs clearly.
Clear the purpose and audience of the translation. The purpose determines whether it is bilingual or translation only, and also determines the style chosen. The first draft for yourself to read and the document submitted to the reviewer have different requirements.
Organize the fixed English writing methods. If the company name, personal name, proper nouns and place names have official English writing, make a list first. After translation, you can check whether it is consistent by checking the list.
Pay attention to seals and handwritten comments. Seals, signatures and handwritten content may not be fully recognized, and blanks or garbled characters may easily appear in the translation. These contents need to be compared with the original and manually supplemented or confirmed.

Steps to translate Chinese scanned documents into English in OmniDoc

Open omnidoc.top and enter the document translation function.
Upload the scanned PDF. Before uploading, make sure the file can be opened normally and the number of pages is consistent with the original.
Set the language direction, select Chinese as the source language and English as the target language.
Select a style. For papers, choose academic, for contracts, choose law, for technical materials, choose technology, for business materials, choose business, and for literary texts, choose literature.
Select the output format, check it yourself with bilingual comparison, and give it to English readers with only translation.
Submit the translation and wait for processing to complete.
Download the translation file.
Open the results and check each item from the checklist in the next section.

Check each item after completion

After getting the English document, do not send it directly, first check according to the list below.

Check items	How to see	What to do if there is a problem
Page number and page order	Compare page numbers and titles with the original page by page	When pages are missing or the order is out of order, check whether the original file is complete and then upload it again.
Numbers, dates, amounts	Find the original numbers in the bilingual comparison and check the corresponding numbers in English	If there is any discrepancy, the original shall prevail and be corrected manually, and the same number shall be searched for in the full text.
Person's name, company name, address	Compare it with the English writing you compiled	Inconsistent unified replacement to avoid two ways of writing the same object
Layout and tables	Check whether table rows, formulas and paragraphs are misaligned	Use the PDF editor to directly modify the paragraph text, or delete or rearrange the page before checking
Seal and handwriting	Check for blank, garbled, or missing comments	Compare the original document and fill in or mark the missing content.
Professional terminology	Compare common writing methods or glossary of terms in the industry	Modify it point by point to ensure that the same term is consistent throughout the text

The translation is generated by machine translation and cannot ensure that every sentence is accurate. If it is used in formal occasions such as contracts, certificates, paper submissions, etc., please ask a colleague or professional translator who understands English to review it, especially the amount, date, signing subject and legal terms.

❓ Frequently Asked Questions (FAQ)

1. To translate the scanned document into English, do I need to use OCR to convert it into text first?

No need to do it alone, OmniDoc can translate scanned PDFs directly. If you still want to modify the original English text or edit the text in the scanned document, you can OCR the file in the PDF editor on the desktop client and then modify it.

2. Can photos taken with a mobile phone be translated directly?

Picture materials are supported. When taking photos, try to keep them flat, evenly lit, and clear in text, otherwise the quality of recognition and translation will decline.

3. Can the translation be submitted directly as an official document?

It is not recommended to submit directly. There may be errors in the machine translation. For formal occasions, someone who understands English should be asked to review. Key figures, signing parties and dates should be checked item by item with the original.

4. What should I do if the format is messed up after translation?

First determine which page and where the mess is. The text position can be modified using the PDF editor to modify the paragraph text, and the page order can be adjusted by deleting and rearranging. If it's too messy, you can just re-upload the translation for that page and replace it.

📝 Summary

There is no need to detour when translating scanned documents into English. You can directly upload the scanned PDF version. The key is to choose bilingual comparison or translation only according to the purpose. After the translation is completed, check the numbers, names and formats against the list to get a usable English document. Content involving official purposes should still be reviewed manually.

Open OmniDoc, upload the document and start translation