Fix PDF Text Turning Into Gibberish After Editing and Saving
Question details
Users experience PDF text changing into unreadable gibberish or weird symbols after making edits and saving the document.
- Product
- PDF Editor
- Device & OS
- not provided
- Scenario
- Editing an existing PDF file and saving the changes.
- Observed behavior
- The edited text becomes completely unreadable or turns into incorrect characters upon saving, typically due to missing fonts, font substitution, or text-encoding mismatches.
Before attempting to fix the PDF, check if you still have access to the original source document (such as a Word or InDesign file), as recreating the PDF is often the quickest fix.
Verify and Embed Missing Fonts
Check for missing fonts in the document properties and use Preflight tools to embed them securely.
Text often turns to gibberish because the font used previously was replaced or missing during a new software installation, leading to an encoding mismatch. Embedding the fonts ensures the document retains its readable text format.
Open the PDF and navigate to File > Properties > Fonts. Look at the list to see if all fonts are labeled as 'Embedded' or 'Embedded Subset'.
If any fonts are not embedded, locate those specific fonts and install them onto your computer's system.
If you are using Adobe Acrobat, go to Tools > Print Production > Preflight > Fixups. Select and run the fixup to embed the available fonts directly into the PDF.
Recreate PDF from the Original Source
Return to the original document to apply your edits and generate a fresh PDF to avoid persistent encoding conflicts.
Edit PDFs Safely with WPS Office
Avoid frustrating text corruption and font encoding issues with WPS PDF. Our integrated PDF editor handles font mapping smoothly, ensuring your edits remain readable and accurately formatted when saved.
- 1. Open PDF in WPS Office: Launch WPS Office and open your PDF document.
- 2. Access Edit Tools: Navigate to the 'Edit' tab on the top ribbon and select 'Edit Text'.
- 3. Make Your Edits: Click on the text you wish to modify. WPS PDF will automatically match the closest available font and encoding.
- 4. Save the Document: Click the 'Save' icon or press Ctrl+S. Your PDF will be saved cleanly without text corruption.
Frequently Asked Questions
Why does my PDF text look like weird symbols when I copy and paste?
This happens when the PDF is missing its ToUnicode table, which maps the font's graphical characters to standard text characters. Without it, the clipboard copies the raw, unmapped data.
How can I tell which fonts are missing in my PDF?
You can view document properties in your PDF editor (usually under File > Properties > Fonts). Fonts that do not say 'Embedded' or 'Embedded Subset' rely on your local system fonts and may cause issues if missing.
Can I fix gibberish text if I don't have the original fonts?
It is very difficult to fix without the correct fonts. The PDF software substitutes a different font, which causes the character encoding to mismatch. Recreating the PDF from the original source file is often the only reliable solution.
