How to Fix Adobe PDF Pack Limits for Combining Files
Question details
The user is unable to combine more than 12 PDF files at once or merge files larger than 100 MB using Adobe PDF Pack.

- Product
- Adobe PDF Pack
- Device & OS
- not provided
- Scenario
- Attempting to merge multiple PDF documents, such as large Photoshop PDFs, into a single file.
- Observed behavior
- The merge process fails or is blocked because the total file count exceeds 12 or individual files exceed the 100 MB size limit.
Before combining files, verify the size of each PDF document to ensure none exceed the 100 MB limit. Sort your files into smaller folders to prepare for batch merging.
Merge PDF Files in Smaller Batches
Group your PDF files into batches of 12 or fewer to work around the Adobe PDF Pack quantity limitation.
Adobe PDF Pack restricts users to combining a maximum of 12 files per upload. By splitting your merge project into smaller steps, you can successfully combine all your documents without triggering the restriction.
Divide the files you want to combine into smaller groups, ensuring each group contains exactly 12 files or fewer.
Upload the first group of files to the Adobe PDF Pack merge tool, process them, and download the resulting merged PDF to your computer.
Process the rest of your file groups individually using the same method, saving each newly combined PDF locally.
Upload the newly created merged PDFs (keeping the total under 12) and combine them into your ultimate final document.

Compress Large PDFs Before Combining
Reduce the file size of your PDFs to ensure every document is under the 100 MB limit before attempting to merge them.
Merge Large PDFs Seamlessly with WPS Office
Bypass restrictive file counts and size limits by using WPS Office's robust built-in PDF tools. Quickly merge multiple large PDF files into a single document without the hassle of manual batching.
- 1. Launch WPS Office: Open WPS Office on your computer and navigate to the 'PDF' tab on the home interface.
- 2. Select the Merge PDF tool: Click on 'Merge PDF' located in the top toolbar or within the PDF toolkit menu.
- 3. Add all your files: Click 'Add Files' and select all the PDF documents you wish to combine, without worrying about batching.
- 4. Combine and save: Arrange your files in the preferred order, click 'Merge', and save the final combined document.

Frequently Asked Questions
What is the maximum file size I can combine with Adobe PDF Pack?
Adobe PDF Pack restricts each individual file to a maximum of 100 MB when combining documents. Files exceeding this size will fail to upload or merge.
Can I combine more than 12 files at once in Adobe Acrobat Pro?
Yes, upgrading to Adobe Acrobat Pro or Standard removes the strict 12-file limitation found in the basic Adobe PDF Pack, allowing for much larger combinations and advanced workflows.
Why are my Photoshop PDFs too large to merge?
Photoshop PDFs often retain high-resolution image data, uncompressed graphics, and editing layers, resulting in file sizes that easily exceed the 100 MB limit of standard online merging tools.
How do I cancel my Adobe PDF Pack subscription?
You can cancel your subscription by logging into your Adobe account online, navigating to your 'Plans and Payment' or subscription settings, and selecting the option to cancel the plan.




