Other PDF Issues

Fix Acrobat Text Appearing as Boxes with X Marks After Saving

Rana GarciaRana Garcia Oct 28, 2026 869 views

Question details

The user is experiencing an issue where text added to a PDF turns into boxes with X marks after the file is saved and reopened.

Fix Acrobat Text Appearing as Boxes with X Marks After Saving
Product
Adobe Acrobat XI Pro
Device & OS
not provided
Scenario
Saving and reopening a PDF document after adding new text.
Observed behavior
Text displays correctly initially but changes to boxes with X marks upon reopening, particularly affecting capital letters and symbols.
Before you start

Ensure that the fonts you are using to add text are fully installed on your system and that you have the appropriate permissions to embed them in the PDF document.

Solution 1Recommended

Check Font Embedding and System Fonts

Missing or improperly embedded fonts are the most common cause of text rendering as boxes with X marks.

When you add text to a PDF, the PDF viewer needs access to the specific font to display it correctly. If the font is not embedded in the document and is not installed on the system viewing it, Acrobat will substitute the missing characters with blank boxes or X marks.

1
Verify Font Status

Open the affected PDF in Acrobat, click on 'File', select 'Properties', and navigate to the 'Fonts' tab. Check if the fonts used for the new text are listed as 'Embedded' or 'Embedded Subset'.

2
Change to a Standard Font

If the font is not embedded, try selecting the problematic text and changing it to a standard system font like Arial or Times New Roman to see if the issue resolves.

3
Force File Rewrite

Instead of a standard save, go to 'File' > 'Save As' and create a new copy of the PDF. This forces Acrobat to rewrite the file structure and can sometimes resolve rendering glitches.

Check Font Embedding and System Fonts
Font Licensing: Some proprietary fonts have licensing restrictions that prevent them from being embedded in PDF files. Using standard fonts avoids this issue.
Professional PDF Editor

Add Text to PDFs Reliably with WPS Office

Avoid legacy font embedding issues and corrupted text rendering by using the modern PDF editor in WPS Office. It allows you to easily add, edit, and save text in PDF documents with full compatibility and reliable font handling.

  1. 1. Open your PDF: Launch WPS Office and open your PDF document using the built-in PDF viewer and editor.
  2. 2. Access Edit Tools: Navigate to the 'Edit' tab located on the top ribbon menu.
  3. 3. Insert Text: Click on 'Add Text' or 'Edit Text', then click anywhere on the document to start typing.
  4. 4. Format Your Text: Select your desired font, size, and color from the text formatting panel. WPS Office handles system font embedding automatically.
  5. 5. Save the Document: Click the 'Save' icon or press Ctrl+S. Your text will be saved securely and will remain perfectly readable without rendering errors.
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Frequently Asked Questions

Why does PDF text turn into square boxes or gibberish?

This usually happens when the font used to create the text is not embedded in the PDF file, and the system opening the file does not have that specific font installed. The PDF viewer substitutes it with a default character, often appearing as a box with an X.

How can I ensure my fonts are embedded in my PDF?

You can check font status by pressing Ctrl+D to open Document Properties, then selecting the Fonts tab. To embed fonts during creation, you usually need to adjust the settings in your PDF printer properties or use the Preflight tool to embed missing fonts.

Is Acrobat XI Pro still supported?

No, Adobe Acrobat XI Pro reached the end of support in October 2017. Users experiencing persistent bugs are generally advised to upgrade to a newer version or switch to a modern alternative like WPS Office for continued compatibility, security updates, and bug fixes.