How to Fix Adobe Reader Crashing When Using the Pencil Tool
Question details
The user needs to stop Adobe Reader from crashing when annotating scanned or image-based documents with the Create Pencil tool.

- Product
- Adobe Reader
- Device & OS
- Windows 10
- Scenario
- Repeatedly using the Create Pencil tool to mark up or draw on scanned, image-based PDF files.
- Observed behavior
- Adobe Reader unexpectedly crashes or freezes during the annotation process.
Ensure you have saved a backup copy of your PDF document to prevent data loss, and check if your Windows 10 system has any pending graphics driver updates.
Disable GPU Graphics Acceleration
Turning off 2D graphics acceleration can resolve rendering conflicts that cause crashes when drawing over image-heavy PDFs.
Hardware acceleration attempts to use your computer's graphics card to speed up page drawing. However, on complex scanned documents, this can sometimes lead to instability and application crashes.
Launch Adobe Reader, click on the 'Edit' menu at the top, and select 'Preferences' from the dropdown list.
In the Preferences window, select 'Page Display' from the left-hand Categories pane.
Under the 'Rendering' section, uncheck the box next to 'Use 2D graphics acceleration'.
Click 'OK' to save your settings, then close and reopen Adobe Reader to apply the changes.

Update or Reinstall Adobe Reader
Installing the latest build of Adobe Reader ensures that you have all recent bug fixes related to the Pencil tool.
Optimize the PDF File
Reducing the file size and flattening image layers can alleviate the processing load that triggers the application crash.
Use WPS PDF to Annotate Scanned Documents Without Crashing
If your current PDF reader keeps crashing, switch to WPS PDF to seamlessly mark up and annotate your scanned or image-based files. WPS Office provides a highly stable environment with robust drawing tools that handle heavy documents effortlessly.
- 1. Open Your PDF: Launch WPS Office and open your scanned or image-based PDF document.
- 2. Navigate to the Comment Tab: Click on the 'Comment' tab located in the top ribbon menu to access annotation tools.
- 3. Select the Drawing Tool: Click on 'Graffiti' or the pencil icon to begin drawing freehand on your document.
- 4. Save Your Annotations: Draw your marks smoothly, then click the 'Save' icon to preserve your work without experiencing crashes.

Frequently Asked Questions
Why does the Pencil tool crash more often on scanned PDFs?
Scanned PDFs are made of high-resolution raster images rather than standard text. Drawing vector shapes (like pencil strokes) continuously over these heavy images consumes a large amount of memory and rendering power, which can overwhelm the application and cause a crash.
Will disabling hardware acceleration affect my computer's performance?
Disabling 2D graphics acceleration only affects how Adobe Reader renders documents. It shifts the processing load from your GPU to your CPU. While scrolling might become slightly less smooth on very large files, it generally prevents rendering conflicts and stops the application from crashing.
Is it possible to recover the annotations I lost during the crash?
If the application crashed before you manually saved the document, you might lose your recent pencil marks. However, if auto-recovery was enabled, Adobe Reader may prompt you to open a recovered version of the file the next time you launch the application.




