How to Fix Acrobat Cannot Merge PNG Files After Update
Question details
Users are experiencing errors when attempting to merge multiple PNG image files into a single PDF document in Adobe Acrobat.
- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Combining multiple PNG files to generate a single PDF document for lower memory consumption compared to JPGs.
- Observed behavior
- The software returns an error and fails to complete the PNG-to-PDF merging workflow, a process that functioned correctly prior to a recent automatic application update.
Ensure your computer is connected to the internet to download necessary software updates, and save any currently open PDF documents to prevent data loss.
Update Acrobat or Reader to Version 2019.021.20056 or Later
Installing the official Adobe update patches the specific bug preventing PNG files from being combined into a PDF.
The Adobe Acrobat Desktop Team identified a bug in a prior automatic update that broke the PNG-to-PDF workflow. Releasing version 2019.021.20056 officially addresses this conversion issue.
Launch Adobe Acrobat Pro DC or Acrobat Reader on your computer.
Navigate to the top menu bar and click on the 'Help' tab to reveal the dropdown menu.
Select 'Check for Updates' from the menu options.
Follow the on-screen prompts to download and install version 2019.021.20056 (or any later release). Once the installation is complete, restart Acrobat and try merging your PNG files again.
Provide Diagnostic Information to Adobe Support
If updating the software does not resolve the issue, gathering specific workflow information will assist support teams in diagnosing the remaining problem.
Use WPS Office to Seamlessly Merge PNG Files into a PDF
If Acrobat continues to display update errors, WPS Office provides a reliable, built-in PDF toolkit to easily convert and merge multiple image files (including PNGs and JPGs) into high-quality PDF documents.
- 1. Open WPS Office: Launch WPS Office on your computer and select the 'PDF' tab from the main workspace interface.
- 2. Select the Picture to PDF Tool: In the PDF tools menu, click on 'Picture to PDF' or 'Create PDF from Image'.
- 3. Add PNG Files: Click the 'Add Pictures' button and select all the PNG files from your computer that you wish to combine.
- 4. Convert and Merge: Drag the thumbnails to rearrange their order if needed, then click the 'Convert' or 'Merge' button to instantly generate your combined PDF document.
Frequently Asked Questions
Why did my Adobe Acrobat suddenly stop merging PNG files?
The issue was caused by a software bug introduced during a scheduled automatic update of Adobe Acrobat DC. Adobe's developers acknowledged the glitch and released a hotfix (version 2019.021.20056) to restore the PNG-to-PDF merging capabilities.
How do I check my current Adobe Acrobat version?
To check your version, open Adobe Acrobat Pro DC, click on the 'Help' menu at the top of the application window, and select 'About Adobe Acrobat Pro DC'. A dialog box will appear displaying your exact release version and build number.
Are PNG files better than JPG files for creating PDFs?
PNG files utilize lossless compression, which preserves sharp lines, text, and transparent backgrounds, making them excellent for documents with charts or text overlays. However, they result in larger file sizes. JPGs use lossy compression, which is more memory-efficient and generally preferred for standard photographs.
Can I use WPS Office to combine images into a PDF?
Yes. WPS Office features a comprehensive suite of PDF tools, including a dedicated 'Picture to PDF' function that easily merges PNG, JPG, and other image formats into a single, high-quality PDF document.
