Methods and settings for translating scanned documents into Chinese
Text cannot be selected directly in scanned documents, so the file type and language direction must be confirmed before translation. This article explains which output should be selected when translating English scans into Chinese, how to set the language, and gives a verification method after completion.
Key points of this article
- The scanned copy is a page in the form of a picture. Before translating, try selecting a piece of text to confirm whether it is a scanned copy.
- To translate English scanned documents into Chinese, when uploading, set the source language to English, the target language to Chinese, and then select the output format.
- If you want to keep the original text comparison, choose bilingual comparison; as long as the Chinese finished product is delivered, choose translation only.
- Before the translation is handed over, numbers, proper nouns, tables and formulas must be checked page by page. Machine translation will make mistakes.
- When you need to modify the text in the scanned document, you can first use OCR to turn the image text into editable content, and then make changes.
Many people have a scanned copy in English, such as a photocopy of a paper thesis sent by their instructor, or a scanned and archived contract or instruction manual, and want to translate it into Chinese for reading. When I copied the content directly, I found that the text could not be selected, and ordinary translation tools could not read the paragraphs, so I didn't know where to start. The key to translating a scanned document into Chinese is to first find out whether it is a page in the form of a picture, and then set the language direction and output format correctly.
This article is written for readers who need to translate scanned documents from English or other foreign languages into Chinese. After reading it, you will be able to determine which category your file belongs to, know which language options to set when uploading, and what areas to check after getting the translation.
The following content only talks about the general judgment method and the operations that can be completed in OmniDoc, and does not involve the menu path of the specific software.
How to set the scanned document to Chinese? One sentence conclusion
To translate scanned documents into Chinese, first confirm the source language and target language, and then select bilingual comparison or translation only according to the reader's purpose. When the document itself is a scan, OmniDoc supports directly uploading the translation without the need for separate text recognition first.
| your situation | Recommended practices | reason |
|---|---|---|
| Scanned copy in English, read and understand by yourself | Select English as the source language, Chinese as the target language, and bilingual comparison as the output. | Chinese and English are compared paragraph by paragraph to facilitate checking the original meaning. |
| Scanned copies in English should be sent to Chinese readers. | Select English as source language, Chinese as target language, and select translation only as output. | The finished product is clean and suitable for direct forwarding or filing. |
| There are a lot of tables and formulas in the scanned document | Choose bilingual comparison and focus on checking tables and formulas after translation | The comparison version makes it easy to find the corresponding position, and tables and formulas need to be checked manually. |
| Need to modify the text based on the translation | OCR the scanned document first, then edit and re-translate if necessary | The text cannot be modified directly on the image page |
| The file is mixed in multiple languages | Confirm the main language before setting, and check the mixed paragraphs one by one. | If the language direction is set incorrectly, the quality of the translation will be significantly reduced. |
Before you start: Confirm these points first
1. Confirm that the document is indeed a scanned copy. Scans are usually image pages generated after taking a photo or scanning the paper, and text cannot be selected. The judgment method is very simple: use the mouse to select a piece of text in the PDF reader. If the selection cannot be selected and only a block is framed, then it is a scan; if it can be selected and copied, it is a digital version of the PDF, and direct translation will be more stable. Both types of files can be uploaded, but you need to know which type it belongs to in order to determine possible problems with the translation.
2. Confirm whether the source language is English or other languages. Scans often come from overseas journals, foreign language contracts or import instructions, and the language may not be single. If you choose the wrong source language, the translation will have garbled sentences or missing translations. If the first few pages of the document are in English, followed by French or German quotes, it is recommended to set the main language first, and then randomly check the mixed parts.
3. Confirm the purpose of the translation. Understanding the original text yourself has different requirements than giving the translation to others for review. The former saves trouble by choosing bilingual comparison; the latter usually requires only translation and requires higher verification.
4. Confirm scan quality. The page is skewed, blurred, shadowed or blocked by seals, which will affect text recognition. Before translating, it is recommended to take a look at the original document to make sure the text can be clearly seen on key pages. Pages with poor quality have a higher probability of errors and omissions in the translation, so check them carefully.
5. Confirm whether important content is involved. Contract terms, medical reports, and data in academic papers are all areas where errors are costly. Both machine translation and OCR may make errors. When encountering such files, be sure to compare them with the original text paragraph by paragraph. Do not use the translation directly.
Steps to translate English scanned documents into Chinese in OmniDoc
- Open omnidoc.top, enter the document translation function, and select the file to upload. Scanned PDFs can be uploaded directly without having to convert the format first.
- After uploading, confirm that the source language is English (or the actual language of your document) and the target language is set to Chinese. These two items determine the direction of the translation, and they need to be re-translated if they are set incorrectly.
- If the document belongs to a certain professional field, such as academic papers, legal contracts, or medical documents, you can select the corresponding writing style option. This way the terminology and expressions will be closer to the conventions of the field.
- Select the output format. If you want to compare and read paragraph by paragraph, choose bilingual comparison, and the Chinese and English will be arranged left or right or top and bottom according to the original format; if you only want the finished Chinese version, choose translation only.
- Submit the translation and wait for processing to complete. When the document is long, it is recommended to use a few pages for trial translation to confirm that the language direction and format are correct before processing the entire document.
- Download the translation. After opening, read the first few pages to make sure the page numbers, titles, and paragraph order are consistent with the original.
- Check key contents page by page, focusing on numbers, dates, names of people, names of organizations, proper nouns and tables.
- If you need to correct errors in the translation, you can directly change the paragraph text in the PDF editor on the desktop client, and then export it to the required format. The desktop client download address is download.omnidoc.top.
If you want to modify the text of the scanned document itself, rather than read-only translation, you can first use the OCR function of the desktop client to convert the scanned page into recognizable text, and then edit it. OCR will also have recognition errors, and manual inspection is still required after editing.
Check each item after completion
Once you get the translation, do not forward or file it directly. The table below lists common inspection items.
| Check items | How to see | What to do if there is a problem |
|---|---|---|
| language direction | Whether the translation is in Chinese and whether the original paragraph has been translated into Chinese | If it is still in English or mixed, check the source language and target language settings and translate again. |
| Number of pages and order | Compare it page by page with the original to confirm that there are no missing pages or duplicate pages. | Missing pages are usually related to incomplete scans of the originals, and the originals need to be rescanned or supplemented. |
| Numbers and units | Check the amount, date, dose, and parameters with the original text | Numerical errors are corrected directly in the editor and the modified position is recorded |
| proper noun | Name of person, place, organization, product name, legal clause number | Proper nouns that appear for the first time can be retained in the original English text using parentheses. |
| Tables and formulas | Are the rows and columns aligned and the formula complete? | It is recommended to check complex forms against the bilingual version box by box and make manual adjustments if necessary. |
| Blurred page | Is the translation of passages that are difficult to identify in the original text smooth? | This type of paragraph needs to be returned to the original document for manual verification and should not be accepted directly. |
🎯 Which method is suitable for you?
- Just want to understand the general idea: Select bilingual comparison, quickly browse the Chinese, and refer to the original English text if you have any questions.
- To send the translation to colleagues or clients: Select only the translation, revise it page by page in the desktop client, and then export.
- The quality of the original document is poor and the layout is complex: Use a few pages of trial translation to see the effects of tables and formulas, and then decide whether to process it in its entirety.
- Need to continue editing based on the translation: do OCR first, edit and then process it into the final version, and recheck the changes.
❓ Frequently Asked Questions (FAQ)
1. To translate the scanned document into Chinese, do I need to do OCR first?
OmniDoc supports directly uploading scanned PDFs for translation, usually without the need to do a separate OCR first. Only when you need to modify the text in the scanned document, you need to use OCR to turn the image text into editable content.
2. After the English scanned document is translated, how can I confirm that the translation is Chinese and not English?
After opening the translation, first look at the title and text paragraphs on the first page. If it is still in English, check the target language setting when uploading, change it and resubmit. Confirm that everything is correct before processing the entire document.
3. Which one is more suitable for reading scanned documents, bilingual comparison or translation only?
Personal reading is usually more suitable for bilingual comparison, so that it is easier to confirm the meaning by comparing it with the original text. When it is necessary to deliver finished products in Chinese, it is more appropriate to choose translation only, but a complete check must be made before delivery.
4. What should I do if the format of the scanned document is messed up after translation?
First check whether the original is skewed or blurred. Such problems will affect layout recognition. If only a few paragraphs are misaligned, you can modify the text of the paragraph in the PDF editor on the desktop client; if the overall layout needs major changes, it is recommended to improve the clarity on the original before re-translating.
5. Can the translation result be used directly in formal occasions?
Both machine translation and OCR may make mistakes. Before using it in formal situations, please check it paragraph by paragraph with the original text, especially numbers, terms and proper nouns. Content involving legal, medical or academic publications should be reviewed by someone familiar with the field.
📝 Summary
The key to translating scanned documents into Chinese is to first confirm the file type, then set the source language and target language, and finally select bilingual comparison or translation only according to the purpose. After you get the translation, check the numbers, proper nouns, and tables page by page before you can use it with confidence. Translating an English scan into Chinese is not complicated. If you complete these steps in order, you will get a readable and checkable Chinese version.


