When encountering PDF version numbers that do not meet upload, archiving, or compatibility requirements, there is no need to open files individually and re-export. This article introduces an office processing method for batch modifying PDF version numbers: go to the PDF tool via HeSoft Doc Batch Tool , select "Convert PDF to other versions of PDF," add files in batch, choose target versions such as PDF 1.5, PDF 1.6, PDF 2.0, or PDF/A, and then output uniformly. The article illustrates the actual effect with screenshot comparisons of PDF 1.7 before processing and PDF 2.0 after processing, and organizes considerations for selecting versions, saving outputs, checking results, and handling protected files.
Many users encounter a seemingly minor but efficiency-impacting issue when submitting PDF materials: the file content is correct and the pages can be opened, but the system prompts that the PDF version does not meet requirements, or the recipient reports that certain files cannot be previewed normally. This is especially true for contracts, bidding materials, scanned documents, thesis attachments, product manuals, etc., where many PDFs may need to be submitted at once. The workload would be enormous if you had to open each file to check its properties and then process them individually to the specified version.
The approach introduced in this article uses the office software HeSoft Doc Batch Tool to uniformly convert multiple PDF files to a specified PDF version. Whether you need PDF 1.5, PDF 1.6, PDF 1.7, PDF 2.0, or version types like PDF/A, PDF/X, PDF/UA provided in the interface, it can all be done through the same wizard-based process. This article will explain step-by-step with screenshots and illustrate how to verify version changes before and after processing.
Applicable Scenarios: How to Handle Non-Compliant PDF Version Numbers
The version number of a PDF file is usually hidden in the document properties and rarely noticed. However, in some formal office scenarios, it directly affects whether a file can be submitted, archived, or opened correctly. The following situations are particularly common:
- Upload Platform Error: The platform requires files to be of a specific PDF version or standard, and prompts a format failure after the user uploads.
- Client or Company Requirement for Unified Standards: The recipient requires all PDF materials to use PDF 1.6, PDF 1.7, or PDF 2.0 to avoid errors in subsequent system processing.
- Older Software Cannot Open High-Version PDFs: Some older computer environments may fail to preview, display abnormally, or print incorrectly when encountering newer PDF versions.
- Files from Multiple Sources Need Unification: PDFs obtained from email, cloud drives, scanners, and online conversion tools have inconsistent versions and need unified processing before delivery.
- Archiving and Long-Term Preservation: Some archival scenarios require standard types like PDF/A for long-term preservation and cross-platform reading.
The common thread in these issues is that the task is not to modify a single file, but a batch of files. In this case, batch file processing capability is more important than single-PDF editing features. HeSoft Doc Batch Tool is precisely positioned for batch document processing and reducing repetitive work, making it suitable for such PDF version unification tasks.
Effect Preview: Batch Conversion from PDF 1.7 to PDF 2.0
First, let's look at the file status before processing. There are 4 PDFs in the example folder, named services.pdf, The Safety of Mars Sample Return.pdf, the-crowdsourced-guide-to-learning.pdf, and Voyager-Grand-Tour.pdf. They all need to be processed as the same batch task, not individually.
Opening services.pdf among them, you can see in the document properties of Adobe Acrobat Pro DC that the current PDF version is 1.7 (Acrobat 8.x). This is the state before processing. If the target system requires PDF 2.0, then this file needs conversion; if a batch of files has multiple versions, they can also be unified to the same version through batch conversion.
After processing is complete, check the document properties of the output file again, and you can see that the "PDF Version" has changed to 2.0. The screenshot also shows the output location, indicating that the converted file was saved in a new directory for easy management separate from the original file.
From this effect, it can be confirmed that batch conversion is not simply renaming files, nor is it converting PDFs to Word, docx, Excel, or images; it is converting the PDF file itself to another PDF version. For office scenarios requiring system validation or compatibility, this point is crucial.
Operation Steps: Complete Workflow for Batch Modifying PDF Version Numbers
Step 1: Find the Version Conversion Function in PDF Tools
After opening HeSoft Doc Batch Tool , the left side is the function category navigation, including File Name, Folder Name, File Organization, Word Tools, Excel Tools, PowerPoint Tools, PDF Tools, etc. Since this task involves processing PDF version numbers, first click "PDF Tools" on the left.
In the function list on the right, find "Convert PDF to other versions of PDF". The screenshot shows the description of this function card is "Batch convert PDF files to other versions of PDF". Selecting this function will enter the dedicated batch conversion page.
The purpose of this step is to avoid selecting the wrong function. For example, "PDF to Word" is suitable for converting PDFs to Word documents, possibly generating docx or doc; "PDF to JPG Images" is suitable for converting pages into images; what this article aims to do is still output a PDF, only changing the target PDF version, so "Convert PDF to other versions of PDF" should be selected.
Step 2: Import the PDF Files to be Converted
After entering the function page, the first step is "Select records to process". At the top of the interface are two main entry points: "Add Files" and "Import Files from Folder". If files are scattered in different locations, you can click "Add Files" multiple times to select; if the files are all in the same folder, you can use "Import Files from Folder" for batch import.
In the example, 4 records have been imported, and the list shows file name, path, extension, creation time, modification time, and other information. After importing, do not rush to the next step. It is recommended to check three things first: first, whether the number of records matches expectations; second, whether the extensions are all pdf; third, whether the paths point to the correct folders. This prevents adding incorrect files or old versions to the processing task.
If a file is found not needing conversion, it can be removed using the delete icon in the list; if imported incorrectly, you can click "Clear" and re-add. After confirming everything is correct, click "Next" at the bottom.
Step 3: Select the Target Version from the Version List
The second step is "Set processing options". The interface lists multiple target versions in the form of radio buttons, including regular PDF 1.0, PDF 1.1, PDF 1.2, PDF 1.3, PDF 1.4, PDF 1.5, PDF 1.6, PDF 1.7, PDF 2.0, as well as standard types like PDF/A, PDF/X, PDF/UA, ZUGFeRD.
In the example, PDF 2.0 is selected, so the document properties after conversion show PDF version 2.0. If your requirement is "change PDFs to 1.5", select PDF 1.5 here; if it is "uniformly convert to PDF 1.6", select PDF 1.6. This step determines the version number of the final output files and is the most critical setting in the entire workflow.
Note that a higher PDF version is not necessarily better. A higher version might support more features, but older systems may not be compatible; a lower version might have broader compatibility, but certain new features might need to be handled during conversion. Therefore, it's best to choose based on platform instructions, client requirements, or internal standards.
Step 4: Set the Save Location and Keep Original Files
The third step in the workflow is "Set save location". Although the specific content of this page is not shown in the screenshot, the properties screenshot after processing shows the output file is located in an output directory like C:\Users\hello\Desktop\hesoft-output\. That means the processed PDFs will be saved to a specified location, convenient for users to centrally view the results.
During actual operation, it is recommended not to mix conversion results with original files. You can create a new folder, such as "PDF_2.0_Output", "PDF_1.6_Submission_Version", "PDF Version Conversion Results", etc. This not only makes verification easier but also allows re-processing with the original files if the settings are found inappropriate.
Step 5: Start Processing and Verify the PDF Version
After completing the save location setting, proceed to "Start Processing". Execute the batch conversion after confirming the file list, version option, and save location. Once processing is done, open the output directory and check if the corresponding PDF files are generated.
To confirm whether the version was actually modified successfully, you can open any output file and check the "PDF Version" in Adobe Acrobat's Document Properties. In the example, services.pdf was PDF 1.7 before processing and became PDF 2.0 afterward, indicating the version conversion took effect. For officially submitted materials, it's recommended to spot-check multiple files to ensure page count, content, images, and font display are all normal.
Frequently Asked Questions and Notes
1. Can the PDF version problem be solved just by changing the extension?
No. The PDF version number is not determined by the file extension, nor can it be changed by renaming the file to a certain format. The actual version information is in the PDF file structure and requires re-processing by a conversion tool. The method in this article is batch conversion of the PDF itself, not renaming.
2. Will the file size change after converting from PDF 1.7 to PDF 2.0?
It is possible. In the example screenshots, the file sizes before and after processing are very close, but different PDF content structures may lead to slight size changes after conversion. As long as the file opens normally, the content is complete, and the version meets requirements, minor size changes are usually normal.
3. Do I need to process all files at once?
If the files are very important, it's recommended to test with a small sample first. After confirming the target version is correct and the output files are normal, then import all files for batch processing. This reduces the risk of batch rework.
4. What is the difference between converting to PDF/A, PDF/X, and regular PDF versions?
Regular PDF versions like 1.5, 1.6, 2.0 lean more towards version compatibility; PDF/A, PDF/X, PDF/UA, etc., are types oriented towards specific standards, such as archiving, print exchange, or accessibility. Selection should be based on explicit requirements; choosing a standard version arbitrarily is not recommended.
5. How to manage output files after batch conversion?
It is recommended to create folders by target version and clearly state the purpose in the folder name, such as "Submission_Version_PDF2.0" or "Archive_Version_PDF_A". If subsequent operations like compression, encryption, watermarking, or page deletion are needed, they can be performed after the version conversion as the next step in batch office tasks.
Summary: Solving Non-Compliant PDF Version Issues with a Batch Processing Mindset
When PDF version numbers do not meet requirements, the least efficient method is manual processing file by file. Facing a batch of PDFs, the correct approach should be: first determine the target version, then batch import files, uniformly set conversion options, and finally centrally output and spot-check results. HeSoft Doc Batch Tool , as office software, provides a process oriented toward batch file processing, helping users reduce repetitive clicking and manual verification.
If you are processing a batch of files that need to be converted to PDF 1.5, PDF 1.6, PDF 2.0, or other versions, you can follow the steps in this article. Verify the effect with a few files first, then batch process the formal materials. This is more efficient than opening PDFs one by one and re-exporting them, and is more suitable for the large-volume file processing needs in daily office work.