How to Fix Cannot Edit PDF Text or Change Fonts in Acrobat 9 Pro
Question details
The user is unable to edit existing text or change fonts in a PDF document due to missing fonts and encoding errors.
- Product
- Adobe Acrobat 9 Pro
- Device & OS
- not provided
- Scenario
- Attempting to edit text or modify formatting in an existing PDF document.
- Observed behavior
- The software displays an error reporting missing system fonts and font-encoding differences (e.g., substituted font Verdana+0), which prevents the user from selecting or modifying the text.
Check if you have access to the original source document (such as Word or InDesign) to re-export the PDF with all fonts properly embedded.
Delete and Recreate the Text Box
Since the original font encoding is missing or corrupted, the most reliable workaround is to remove the uneditable text and replace it with a new text block using an available system font.
When Acrobat encounters a font-encoding difference, it simply cannot map the characters correctly to allow editing. Bypassing the corrupted font entirely by creating new text is the quickest way to update your document.
Go to the 'Tools' menu, select 'Advanced Editing', and click on the 'TouchUp Text Tool'.
Click on the text box that contains the uneditable text to highlight it, then press the 'Delete' or 'Backspace' key on your keyboard to remove it entirely.
Switch to the 'Add Text' tool or hold the 'Ctrl' key while clicking with the TouchUp Text Tool to create a new, blank text box in the same location.
Type your new content into the box and use the Properties menu to select a standard, installed system font (like Arial or Times New Roman) to avoid future encoding issues.
Install the Missing System Font
If you know the exact font that is missing and have the legal right to use it, installing the font on your computer may restore the ability to edit the text.
Edit PDF Text and Fonts Seamlessly with WPS Office
Struggling with font encoding errors in older PDF software? WPS Office features a modern, built-in PDF editor that easily handles text modification, smart font substitution, and formatting without the frustrating encoding errors.
- 1. Open your PDF: Launch WPS Office and drag and drop your PDF file into the workspace to open it.
- 2. Enter Edit Mode: Navigate to the 'Edit' tab located on the top ribbon panel.
- 3. Click Edit Text: Click the 'Edit Text' button. WPS Office will automatically analyze the document and make the text blocks editable, substituting missing fonts if necessary.
- 4. Modify and Save: Highlight the text you want to change, type your corrections, choose a new font from the drop-down menu if desired, and save your document.
Frequently Asked Questions
Why does Acrobat say the font is not embedded?
When a PDF is created, fonts can be 'embedded' into the file to ensure they display correctly on any device. If the creator chose not to embed them to reduce file size, Acrobat must rely on the fonts installed on your local system. If you don't have them, you cannot edit the text.
What does 'font-encoding difference' mean?
Font encoding is how a software maps underlying data to visual characters. A 'font-encoding difference' means the internal character mapping in the PDF's font doesn't match standard system encodings, making it impossible for the software to recognize or modify the text.
Can I force Acrobat to use a different font for the existing text?
If the original text cannot be selected due to severe encoding errors, you generally cannot change its font directly. The software cannot read the characters to convert them. You must delete the problematic text block and recreate it using a working font.
How do I know which font was originally used?
You can check the document's font properties. Go to 'File' > 'Properties' > 'Fonts' tab in Acrobat. This will list all fonts used in the document and indicate whether they are embedded or substituted.
