OmniDoc# check item by item after completion
Explain how to retain the original layout, fonts and content when splitting a PDF: first determine the file type, then split it by page in the PDF editor of the OmniDoc desktop client, and finally check the split files item by item.
#How to split PDF and preserve format
Key points of this article
- The digital version of the PDF is first split by pages using a PDF editor without printing, screenshots or multiple format conversions, with little formatting loss.
- Confirm the page number range before splitting. The page number is calculated according to the original file, including the cover, table of contents and blank pages.
- Chinese characters cannot be selected from the scanned PDF. You need to perform OCR recognition first and then check the extracted text content.
- After unpacking, compare the original document page by page to check the number of pages, fonts, pictures, tables, formulas and jump links.
- If you need to merge them back after splitting, you can use the page merge function of the PDF editor without reprocessing.
When splitting a PDF, what many people worry about is not the operation itself, but that after splitting, the layout will be messed up, the fonts will be changed, the pictures will be missing, or the tables and formulas will be misplaced. This is especially true for papers, contracts, and reports with charts and graphs. How to split a pdf and keep the format, the key lies in two points: choose the right splitting method, and check page by page after splitting.
This article is written for readers who need to split a long PDF into several paragraphs but do not want the content to be out of shape, such as students who only want to submit a few chapters, or employees who need to send certain pages of contracts separately. The following will explain how to determine the file type, how to split it by page in the PDF editor of the OmniDoc desktop client, and what places to check after splitting. After reading, you can follow the steps to break out the required page numbers and know which questions require manual confirmation.
I want to keep the format of PDF splitting, how to do it stably? One sentence conclusion: Split by page directly in the PDF editor. Do not print, screenshot or convert to other formats before splitting. Each additional conversion will increase the possibility of layout errors.
| your situation | Recommended practices | reason |
|---|---|---|
| Only a few pages are needed, the file is a digital PDF | Split by page range in PDF editor page action | The page content is cut directly from the original file without rearrangement. |
| Scanned PDF, Chinese characters cannot be selected | First use OCR to recognize, then split and verify the text | The text in the scanned document is in the form of an image and can only be retrieved and proofread after recognition. |
| After dismantling it, I still need to change some paragraphs. | After splitting, change the paragraph text in the editor, and then export it. | Reduce intermediate conversion steps and control the scope of modifications |
| The separated pages must be handed over to others to fill in or sign. | Use the form filling or signature function after taking it out | Only operate on the required pages, leaving other pages as they are. |
| You need to change the separated part into Word and then edit it. | Check tables and formulas paragraph by paragraph after exporting to Word | There are inevitably differences in format conversion and must be manually checked after exporting. |
Before you start: Confirm these points first
- Confirm whether it is a digital version or a scanned version. After opening the PDF, use the mouse to drag a section of text. What can be selected and highlighted is the text layer, and the layout can usually be maintained after splitting. Most of the things that cannot be selected are pictures, and OCR needs to be done first. Otherwise, the separated files cannot be searched and it is difficult to check the content.
- Explicitly split the page number range. The page number is based on the original document, and the cover, table of contents, and blank pages are all included in the page number. If what you want is "Chapter 3", first find the starting and ending pages of the chapter in the original document to avoid detaching redundant or missing pages.
- Check whether the file has permission restrictions. Some PDFs have passwords set for opening or editing, and the editor may not be able to handle them directly. In this case, you should ask the file provider for an unencrypted version rather than trying to bypass restrictions.
- Keep the original file. Splitting will generate a new file. Do not overwrite or delete the original file. Keep it for page-by-page comparison.
- Desktop client ready. Download the OmniDoc desktop client at download.omnidoc.top for Windows, macOS and Linux. Local processing is also better suited for sensitive documents such as contracts and medical records.
Steps to split PDF by page in OmniDoc desktop client
- Open the OmniDoc desktop client, enter the PDF editor, and import the PDF files that need to be split.
- Browse the full text through page thumbnails, find the starting and ending pages of the target content, and note the page numbers, such as pages 12 to 20.
- Select the split function in the page operation, enter the page number range, and after confirmation, the system will cut out a new page according to the range.
- If you need to split it into multiple paragraphs, set the page number range according to each paragraph, and output each paragraph as an independent file for easy separate management.
- Select the save location and export the split results. It is recommended to indicate the page number range in the file name, such as "Paper_pages 12 to 20".
- Open the new file, turn from the first page to the last page, and browse page by page against the original file to confirm that the number and order of pages are correct.
- If you need to modify individual text, directly change the paragraph text in the editor, save and export again after modification, and check the modifications again in the original file.
The completion of the split does not mean that the result is complete. It is recommended to check it according to the list below.
| Check item | What do you think? | What if there's a problem? |
|---|---|---|
| Number of pages | Whether the number of pages in the new file is equal to the number of pages selected | In case of inconsistency, check whether the start-stop page number is missing or more pages are selected, and re-split. |
| Font and layout | Compare the title, paragraph indentation and margins of the same page of the original document | When the difference is obvious, go back to the original file and re-split it. Do not export it repeatedly on the detached file. |
| Pictures and tables | Zoom in to see the sharpness of the picture and check that the table borders and cells are complete | Most of the missing images are related to the scanned parts or special embedding methods. You can return to the original file to confirm and re-operate. |
| Formulas and special symbols | Check that the superscripts, fractions and Greek letters display properly | Compare the original files one by one and manually correct them in the editor if necessary |
| Directories, bookmarks and hyperlinks | Click the directory entry and the link on the page to see if you jump to the correct location | Invalid jumps need to be manually completed or deleted to prevent readers from not finding the content after clicking. |
| Text optional neutral | Randomly select a few paragraphs of text to confirm that they can be selected and copied normally. | Cannot select to indicate that the page is a picture. You need to do OCR recognition first. |
If it is found that the text is inconsistent with the original text, especially the numbers, dates and technical terms, it should be confirmed one by one according to the original document. Errors may occur in OCR recognition and machine translation, and important contents must be checked manually.
# which method is suitable for you?
- students split papers or textbook chapters: the digital version of PDF can be split directly by page. After splitting the pages of charts and references, make sure that the formulas and tables are not misplaced. - staff split contract or quotation: priority should be given to local clients to avoid uploading sensitive content to third-party websites; after split, focus on checking amount, date and signature page. - deal with scanned data: do OCR identification first, then split it, and then spot-check whether several words are consistent with the original. - the split page needs to be filled in or signed by someone else: use the fill-in or signature feature after the split, so that the layout of the original page will not be changed.
# frequently asked questions (FAQ)
1. Will the content of the file be disclosed when the online website is split into PDF?
The online website needs to upload the file to the server and cannot be completely sure where the file is going. When dealing with sensitive materials such as contracts and medical records, it is recommended to split in the local desktop client, and try to avoid using web tools from unknown sources.
2. What should I do if the font changes after the split?
Font changes are usually related to the incomplete embedding of the original file font or the lack of corresponding fonts in the current system. First confirm whether the font display is normal on the original file, and then go back to the original to re-split; if the original itself is abnormal, you need to ask the file provider for a more complete version.
3. What should you look at when choosing a free split tool?
You can focus on four items: whether there is a limit on the size and number of pages of the file, whether the output result is watermarked, whether the file is processed locally or needs to be uploaded, typesetting after split, whether the pictures and forms are retained. As long as one of them does not meet your needs, even if it is free, it is not suitable for official documents.
4. After the scanned version of PDF is split, what should I do if I can't choose Chinese characters?
First, the scanned parts are identified by OCR, so that the page can be selected for text layer, and then split. After dismantling, randomly check several paragraphs of text to see if the recognition result is consistent with the original, especially numbers and proper nouns.
5. Can it be merged back after the split?
Sure. The PDF editor has the function of page merging, so you can merge the detached files back to their original order. After the merger, it is also necessary to check whether the page number joint is normal page by page.
# Summary
Pdf split retention format how to do, the core is in the PDF editor according to the original document page number directly split, reduce the middle conversion, and after the split page by page to check the number of pages, fonts, pictures, tables and formulas. OCR the scanned parts first, and give priority to the local processing of sensitive documents, so that the split can be completed on the premise of retaining the layout.
