If you want to keep the original page effect of PDFs but don't want others to easily copy the text, you can convert PDF page content into image format and then output it as a new PDF. This way, the file remains in PDF format, making it easy to read, print, and send, but the text on the pages no longer exists as regular text objects. This article focuses on the "PDF pages to images" feature of HeSoft Doc Batch Tool , detailing applicable scenarios, differences before and after processing, batch adding files, checking records, setting save locations, and result verification methods, suitable for office users who need to batch process PDF documents.
In office collaboration, PDF is often used as the final delivery format. Many people export Word, doc, docx, Excel, PPT, or web content as PDF and then send it to colleagues, clients, or students. This approach keeps the layout relatively stable but also brings a problem: if the PDF retains a text layer, others can directly select and copy the content after opening it. This is not ideal for materials whose distribution needs to be controlled.
Converting a PDF into an image-based PDF is a practical office processing method. It does not mean splitting the PDF into images and sending them individually; instead, it converts each PDF page into an image format and then outputs it still as a PDF file. The file appearance remains consistent, and the reading method stays the same, but the text cannot be directly selected and copied like regular text. HeSoft Doc Batch Tool provides a corresponding batch function, suitable for processing multiple PDFs at once, helping users reduce repetitive work and improve processing efficiency before document distribution.
Applicable Scenarios: When an Image-Based PDF Is Needed
Image-based PDFs are suitable for scenarios "primarily for viewing, where direct text copying is not desired." For example, when schools or training institutions distribute course handouts, vocabulary lists, or test question analyses, they want the content to be readable and printable but not easily copied into electronic text; when companies send product introductions, solution descriptions, or quotation materials, they want to maintain the page display effect; when archiving internal systems, notices, or process descriptions within a department, they want documents from different sources to appear more uniform in the reader.
It must be emphasized that page imaging is not a universal protection method. It mainly raises the bar for copying, preventing others from copying with a simple mouse selection. If a document involves strict confidentiality, more comprehensive strategies like permission management, access control, watermarking, and encryption should be combined. For daily office material distribution, image-based PDF is a simple, direct, and easy-to-implement processing method.
Pre-Processing Preview: Multiple PDFs Awaiting Batch Processing
Before processing, the files to be converted are usually placed together in one folder. The screenshot shows 5 PDF files, named 1.pdf, 2.pdf, 3.pdf, 4.pdf, and 5.pdf respectively. This naming convention is common in test materials, batch-exported files, and scanned archival files. If each file were opened and processed individually, it would generate a lot of repetitive operations.
After opening the PDF, it can be seen that English words and definitions on the page can be selected, and the "Copy" option appears in the right-click menu. This indicates a copyable text layer exists in the PDF. For documents like vocabulary lists, teaching materials, and question banks, if you do not want recipients to directly copy the text, page imaging processing can be used.
Post-Processing Preview: PDF Page Content Becomes an Image
After processing is complete, when the output PDF is opened, the page display still shows the original vocabulary list content; table lines, text positions, and the overall layout are all preserved on the page. However, upon right-clicking, the menu changes to image-related options like "Copy Image" or "Save Image As". This indicates the page no longer exists as a copyable text object but is presented as an image.
The benefit of this result is clear and intuitive: recipients can still read the PDF and print it as needed; the sender reduces the risk of the text being directly copied and pasted in bulk. For uniformly processing a large volume of PDF materials, using office software for batch completion is more stable than manual processing.
Operation Step 1: Open the PDF Page-to-Image Conversion Function
After launching HeSoft Doc Batch Tool , select "PDF Tools" in the left navigation bar. This software is positioned for batch office document processing; the interface shows multiple categories and tool entries, suitable for centralizing high-frequency, repetitive file operations.
In the PDF tools list, find "22. Convert PDF Pages to Image Format". From the function description in the screenshot, it can be seen that this is used to batch convert each page of a PDF into an image format and still output it as a PDF file, preventing text and content from being directly copied. Click this card to enter the function page.
Be careful not to mistakenly select a function like "Convert PDF to JPG Images". The goal of this article is to obtain a file that can still be circulated as a PDF, only with the page content already imagified. Therefore, "Convert PDF Pages to Image Format" should be chosen.
Operation Step 2: Add PDFs or Import from a Folder
After entering the function page, the top title displays "Convert PDF Pages to Image Format". Buttons like "Add Files," "Import Files from Folder," "Clear," and "More" are located in the upper right. You are currently at Step 1, "Select records to process," which means adding the PDFs to be converted into the task list.
If the number of files is small, you can click "Add Files" to select PDFs. If multiple PDFs are in the same directory, as in the screenshot, it is recommended to use "Import Files from Folder". This allows importing all PDFs from the entire folder at once, eliminating the need to repeatedly open selection windows and reducing the chance of missing files.
After files are added, the list will display detailed information, including sequence number, name, path, extension, creation time, modification time, and an operation column. The list in the screenshot already contains 5 records, and the summary at the bottom shows the record count is 5, indicating these PDFs have all entered the pending processing queue.
Operation Step 3: Organize and Confirm Pending Records
Confirmation before batch processing is very critical. It is recommended to check the file names and paths item by item against the list to ensure no files from other projects or old versions have been imported. The extension column should display pdf, avoiding any non-PDF files being mixed in. If a record is found unnecessary for processing, it can be deleted in the operation column; if many import errors occur, you can also use "Clear" to re-add.
When the file count is high, the "Filter" and "Sort" features in the interface can help users quickly organize records. For example, sorting by file name makes it easy to check if any number is missing; or filtering to locate a specific type of file. For roles in administration, HR, academic affairs, and sales, these details can reduce rework after executing batch tasks.
Operation Step 4: Go to the Next Step to Set the Save Location
After confirming the records are correct, click "Next Step" at the bottom. The progress indicator at the top of the page shows subsequent steps include "Set Save Location" and "Start Processing". When setting the save location, it is recommended to choose a new output folder rather than mixing it with the original PDFs. This has two benefits: first, it facilitates comparing results before and after processing; second, it preserves the original PDFs, ensuring the source files are still available if content needs modification later.
When naming the output directory, you can align it with the actual business context, for example, "Image-based PDF," "Anti-copy PDF," "Client Version," "Handout Distribution Version," etc. A clear directory name makes subsequent searching and delivery more convenient.
Operation Step 5: Start Batch Conversion and Check the Output PDFs
After setting the save location, proceed to the "Start Processing" stage. The software will execute the conversion sequentially according to the task list, converting each PDF page into an image format and then generating the corresponding PDF output file. Compared to manually opening each PDF, exporting pages as images one by one, and then re-merging them, this batch processing method can significantly save time and reduce human operational errors.
After processing is complete, it is not recommended to delete the original files immediately. You can first open the PDFs in the output directory and spot-check several files. Key inspection points include: whether pages are complete, whether the content is clear, whether page numbers are correct, whether the layout meets expectations, and whether the text can no longer be directly selected and copied as before processing. The appearance of image-related operations in the right-click menu can also help determine if the page has been imagified.
Common Questions and Precautions
1. What is the difference between an image-based PDF and a scanned PDF? From a reading experience perspective, both may appear as page images. The difference lies in that an image-based PDF is derived from original PDF pages and is suitable for batch processing existing electronic PDFs; a scanned PDF usually originates from a scanner or photograph.
2. Can text still be edited after conversion? Generally, it is not suitable for direct text editing because the pages have become images. If content modification is needed, you should return to the original document or original PDF to make changes and then reconvert.
3. Will it affect printing? Usually, normal printing is still possible. Since the final file is still a PDF document, recipients can open and print it using common PDF readers.
4. Can images still be copied? After processing, the page exists as an image, so the reader may offer options to copy or save the image. This differs from copying text and does not directly yield editable text.
5. Might the file size change? It might change. After pages are converted to images, the file size is typically affected by the number of pages, content complexity, and image quality. If the output file is large, you can further optimize it using PDF compression tools.
6. Can OCR be completely prevented? No. Imaging mainly prevents ordinary text copying and cannot stop screenshots, photographs, or OCR recognition. For highly confidential files, more stringent management measures should be employed.
Summary: Entrust Repetitive PDF Processing to Batch Tools
Batch converting PDFs into image-based PDFs where text cannot be directly copied effectively solves a common problem before distributing materials: preserving the page appearance while preventing easy text copying. HeSoft Doc Batch Tool , through its "Convert PDF Pages to Image Format" function, strings together importing, confirmation, setting the output location, and starting processing into a clear workflow, suitable for processing multiple PDF files at once.
If you have a batch of handouts, manuals, quotations, or internal documents to distribute, you can first gather the original PDFs into a single folder and then use the steps in this article for batch processing. This not only improves office efficiency but also makes the delivered PDF version more suitable for reading and anti-copying needs.