Fix Acrobat Pro Cannot Combine Multiple TIFF Images into a PDF
Question details
The user is unable to merge multiple local TIFF image files into a single PDF document because the software stops processing and skips files.

- Product
- Adobe Acrobat Pro DC
- Device & OS
- not provided
- Scenario
- Attempting to combine or merge several local TIFF images into one PDF file.
- Observed behavior
- Acrobat Pro DC prematurely stops the import process, displays an error message stating that a file was skipped, and performs worse as the TIFF file sizes increase.
Before proceeding with the update, make sure you save any open PDF documents and ensure your device has a stable internet connection to download the required software patch.
Update Acrobat Pro DC to Version 2019.021.20056 or Later
Installing the latest software patch from Adobe resolves the known bug that causes TIFF file imports to fail during combination.
Adobe has acknowledged a bug in older continuous releases of Acrobat Pro DC that affects memory handling when importing large local TIFF files. Updating to release 2019.021.20056 or a newer version applies the official fix for this specific issue.
Launch Adobe Acrobat Pro DC. Locate and click on the 'Help' tab in the top navigation bar.
Select 'Check for Updates' from the dropdown menu to prompt the software to search Adobe's servers for the latest release.
Follow the on-screen prompts to download and install version 2019.021.20056 or later. Once installed, restart Acrobat Pro DC and try combining your TIFF files again.

Easily Combine Multiple TIFF Images to PDF with WPS Office
If you continue experiencing software crashes or skipped files in Acrobat, you can quickly and reliably merge large TIFF images into a single PDF document using the lightweight PDF tools in WPS Office.
- 1. Open WPS PDF Tools: Launch WPS Office and click on the 'PDF' tab located in the main workspace interface.
- 2. Select Picture to PDF: Click on the 'Picture to PDF' tool in the PDF conversion menu to open the image merging utility.
- 3. Import Your TIFF Files: Click the 'Add Pictures' button and select all the local TIFF files you wish to merge into one PDF.
- 4. Convert and Merge: Arrange the images in your preferred order, adjust the page layout settings, and click 'Convert' to create your new PDF file.

Frequently Asked Questions
Why does Acrobat Pro DC skip files when merging large TIFF images?
Earlier continuous releases of Acrobat Pro DC contained a bug related to processing and memory handling when importing large local TIFF files. This caused the import process to abruptly skip files or stop entirely. Adobe officially resolved this in the October 2019 update (version 2019.021.20056).
Can I merge TIFF files into a PDF without Adobe Acrobat?
Yes, you can use alternative PDF management software like WPS Office. By using the 'Picture to PDF' tool in WPS Office, you can easily upload multiple TIFF files and combine them into a single PDF document seamlessly.
How do I check my current Adobe Acrobat Pro DC version?
To check your version, open Adobe Acrobat, click on 'Help' in the top menu bar, and select 'About Adobe Acrobat Pro DC'. A new window will pop up displaying your exact current release and version number.




