Fix Incorrect Letter Spacing When Adding PDF Text in Acrobat on Mac
Question details
Users experience overlapping letters, incorrect spacing, or inconsistent colors when adding new text to PDFs using Adobe Acrobat on macOS.

- Product
- Adobe Acrobat
- Device & OS
- macOS
- Scenario
- Adding text to an existing PDF document, particularly older or legacy PDF files.
- Observed behavior
- The newly added text displays improperly with characters overlapping, irregular spaces between letters, or color inconsistencies.
Ensure your macOS is fully up to date and verify whether the text spacing issue occurs across all PDF files or only on specific, older documents.
Update Adobe Acrobat and Recreate the PDF
Updating the software and regenerating the PDF from its original source application typically resolves legacy structural formatting issues.
Older PDFs often contain outdated font dictionaries or internal structures that modern PDF editors struggle to parse correctly, leading to rendering errors like overlapping text. Updating your software and avoiding Apple's native Preview app for resaving is critical.
Open Adobe Acrobat on your Mac, navigate to the Help menu at the top, and select 'Check for Updates'. Install any available updates and restart the application.
Create a completely new, blank PDF document in Acrobat. Use the 'Add Text' tool to type a few sentences to verify if the spacing issue still occurs.
If the issue is isolated to older files, open the original source document (such as Microsoft Word, Apple Pages, or InDesign) and export it again as a fresh PDF.
Do not repeatedly save or edit the problematic PDF file using the built-in macOS Preview app, as it can irreversibly alter the PDF structure and exacerbate text rendering issues.

Add and Edit PDF Text Flawlessly with WPS Office
If you frequently encounter text rendering and spacing issues on Mac, WPS Office provides a robust, built-in PDF editor that handles font metrics accurately, ensuring perfect letter spacing when adding or modifying text.
- 1. Install WPS Office for Mac: Download and install the free WPS Office suite on your macOS device.
- 2. Open your PDF document: Launch WPS Office, click on 'Open', and select the problematic PDF file.
- 3. Access PDF editing tools: Navigate to the 'Edit' tab located on the top toolbar and select the 'Edit Text' or 'Add Text' option.
- 4. Type your text seamlessly: Click anywhere on the document to add your text. WPS Office will automatically apply correct font metrics and spacing without overlapping letters.

Frequently Asked Questions
Why do letters overlap when I edit a PDF on my Mac?
This generally happens due to missing fonts on your system, corrupted embedded font files within the PDF, or editing legacy PDFs created by outdated authoring tools that lack modern text spacing rules.
Can I fix PDF text spacing issues using the Mac Preview app?
No, it is highly recommended to avoid resaving the PDF in Preview to fix advanced spacing issues. Preview modifies the internal PDF structure in ways that can actually worsen text rendering and compatibility with professional PDF editors.
How do I manually change font spacing in an existing PDF?
In professional PDF editors like WPS PDF or Acrobat, you can select the text box, open the text properties or format panel, and manually adjust the character spacing (tracking) or word spacing values.
Will recreating the PDF from the original file solve text formatting errors?
Yes. Exporting a fresh PDF from the original source document (such as Word or Pages) using a modern export engine is the most effective way to eliminate legacy structural issues that cause incorrect spacing.




