How to Fix PDF Text Changing to Garbled Characters on Another Computer
Question details
The user needs to fix a PDF file where the text turns into nonsense or garbled characters when viewed on a different computer.
- Product
- Device & OS
- not provided
- Scenario
- Opening, sharing, or reading a PDF file on a secondary device.
- Observed behavior
- Text displays correctly on the original computer where the file was created, but changes to garbled or unreadable characters on another computer due to missing or incomplete font embedding.
Before attempting to fix the file, ensure you have access to the original source document (like Word or Excel) and the computer where it was created, as you will need to re-export the PDF with the correct settings.
Verify Font Embedding and Recreate the PDF
Check if the fonts are properly embedded in your current PDF, and recreate the document with full font embedding enabled to prevent garbled text across devices.
When a PDF is created without embedded fonts, the viewing computer attempts to use its local fonts to display the text. If the exact fonts are missing, the system substitutes them, which often leads to garbled or nonsense characters.
Open the affected PDF file in Acrobat, Reader, or your preferred PDF viewer. Navigate to 'File' in the top menu, select 'Properties', and click on the 'Fonts' tab.
Review the list of fonts used in the document. Confirm that every required font is explicitly listed as 'Embedded' or 'Embedded Subset'. If they are not, this confirms the source of the garbled text.
Return to the original source file (e.g., Microsoft Word or Excel). When using the 'Save As PDF' or 'Export' function, access the 'Options' or 'Preferences' menu and check the box that says 'Embed fonts in the file' or similar wording.
When saving the new PDF, do not use 'Minimum size', 'Optimize', or 'Reduce File Size' presets without checking their specific settings, as these options frequently strip out embedded fonts to save space.
Create Perfectly Rendered PDFs with WPS Office
WPS Office provides a seamless way to create, edit, and export PDFs with fully embedded fonts, ensuring your documents look exactly the same on any device without the risk of garbled text.
- 1. Open your original document in WPS Office: Launch WPS Office and open the original source document (Word document, Spreadsheet, or Presentation) that you wish to convert to PDF.
- 2. Access the Export to PDF tool: Click on the 'Menu' button located in the top-left corner of the interface, then select 'Export to PDF' from the dropdown list.
- 3. Configure export settings: In the Export to PDF dialogue box, ensure that your settings are configured for standard or high-quality export, which naturally retains proper font formatting.
- 4. Save the universally readable PDF: Choose your desired destination folder and click the 'Export to PDF' button to create a new file that will display flawlessly on any computer.
Frequently Asked Questions
Why do PDFs look different or show weird symbols on different computers?
This usually happens when the original fonts used during document creation are not embedded directly into the PDF file. If the computer opening the file does not have those specific fonts installed locally, it tries to substitute them with default fonts, which can heavily alter formatting or cause text to appear as garbled symbols.
Can I fix a garbled PDF if I do not have the original Word or Excel file?
It is very difficult to fix the PDF itself without the source file. If you only have the garbled PDF without embedded fonts, your best option is to identify which fonts are missing (via File > Properties > Fonts) and install those specific fonts on the computer where you are currently trying to view the file.
Does reducing the PDF file size cause text to turn into nonsense characters?
Yes, it frequently does. Many PDF compression or optimization tools achieve smaller file sizes by explicitly removing embedded fonts. To prevent text rendering issues, avoid aggressive compression options that un-embed fonts, or use optimization tools that offer control over font subsetting.
What does 'Embedded Subset' mean in PDF font properties?
An 'Embedded Subset' means that only the specific characters or letters actually used in the document are saved within the PDF file, rather than the entire font family alphabet. This ensures the text displays perfectly while keeping the file size significantly smaller than embedding the full font.
