Fix Adobe Acrobat Scanning Defaulting to Legal Size Instead of Letter
Question details
The user wants to change the default scan paper size from Legal to Letter in Adobe Acrobat to avoid manually adjusting settings for every scan.
- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Scanning physical documents into PDF format using Adobe Acrobat.
- Observed behavior
- Acrobat ignores the scanner's default Letter setting and defaults to Legal size, forcing the user to use the Custom Scan option manually.
Ensure that your physical scanner is turned on, properly connected to your computer, and has the latest manufacturer drivers installed.
Configure Adobe Acrobat Scanning Presets
Modify the default scanning presets in Acrobat to permanently set the paper size to Letter, eliminating the need to use Custom Scan every time.
By configuring the default presets, you ensure that Acrobat automatically applies your preferred settings, such as color mode and paper size, every time you initiate a standard scan.
Open Adobe Acrobat and navigate to "File" > "Create" > "PDF from Scanner".
Click on "Configure Presets" from the expanded sub-menu.
Select the scanning preset you typically use for your documents, such as "Black & White Document" or "Color Document".
Locate the Paper Size drop-down menu and select "Letter" instead of "Legal" or "Automatic".
Click "Save" to apply these changes. All subsequent scans using this preset will default to Letter size.
Update Adobe Acrobat to the Latest Version
Older versions of Adobe Acrobat may have bugs that cause scanner settings to default incorrectly or gray out custom scan options.
Scan Documents to PDF with WPS Office
If you continue experiencing scanner compatibility issues with Adobe Acrobat, WPS Office provides a seamless and lightweight alternative for scanning documents directly to PDF with easy-to-manage page size settings.
- 1. Open WPS Office: Launch WPS Office and select the "PDF" tab from the main interface.
- 2. Select Scanner option: Click on "Create PDF" and select "Scanner" from the available options.
- 3. Configure settings: Choose your connected scanner and select your preferred page size, such as Letter or A4.
- 4. Initiate scan: Click "Scan" to easily import your physical document as a high-quality PDF.
Frequently Asked Questions
Why are my Custom Scan settings grayed out in Acrobat?
This usually occurs due to a communication issue between Acrobat and the scanner driver, or a known bug in older software versions (such as Acrobat DC 2018). Updating both your scanner's TWAIN/WIA drivers and the Acrobat software to the latest release often resolves disabled fields.
How do I change the default paper size in my Windows scanner settings?
Open the Windows Control Panel, go to "Devices and Printers", right-click your scanner, and select "Scanning preferences" or "Properties". From there, you can change the default page size to Letter. However, note that some applications like Acrobat may override this, requiring in-app preset configuration.
Can I set different page sizes for different types of scans in Acrobat?
Yes. In Acrobat's "Configure Presets" menu, you can create and save multiple presets (for example, one for Letter size and another for Legal size). This allows you to quickly choose the appropriate settings preset when initiating a scan without adjusting individual parameters.
