How to Fix Incorrect Character Spacing When Editing PDFs on Mac
Question details
The user is experiencing incorrect character spacing when attempting to edit PDF files exported from FileMaker.

- Product
- PDF Editor
- Device & OS
- macOS Catalina
- Scenario
- Editing PDF documents exported from FileMaker.
- Observed behavior
- Character spacing becomes distorted or incorrect during the editing process. This issue occurs on a specific Mac running macOS Catalina, while the same files edit normally on other Macs and PDFs exported from Word do not show the problem.
Ensure that the exact fonts used in the original document are fully installed and active on your current Mac, as missing fonts frequently cause spacing and layout errors during PDF editing.
Edit the Original Source Document and Re-export
Because PDF text positioning and font encoding are difficult to reconstruct precisely, the most reliable method for major text changes is to modify the source file.
PDFs are primarily designed as a final delivery format for viewing and printing. When you attempt to edit text in a PDF, the editor has to guess the text flow and character spacing based on embedded data. Re-exporting from the original application ensures perfect layout fidelity.
Open the source document in FileMaker or the original application used to create the layout.
Apply the necessary text corrections, formatting changes, or spacing adjustments directly within the original application.
Export or print the document as a new PDF. In the export settings, ensure that the option to 'Embed fonts' is selected so that the text renders correctly on any device.

Verify Installed Fonts and Software Environments
If the PDF edits correctly on other Mac computers but not on one specific machine, the issue is likely related to local system fonts or software versions.
Edit PDFs Without Spacing Issues Using WPS Office
WPS Office for Mac offers a highly optimized PDF editing environment that intelligently handles font embedding and text flow. It reconstructs paragraphs accurately, helping you avoid character spacing glitches when making minor corrections to exported PDFs.
- 1. Open your PDF: Launch WPS Office on your Mac and open the PDF file you need to modify.
- 2. Access the Edit tool: Navigate to the 'Edit' tab located on the top toolbar and click on 'Edit Text'.
- 3. Modify text smoothly: Click inside the text block. WPS Office will automatically calculate the optimal character spacing and font rendering as you type your corrections.

Frequently Asked Questions
Why does my PDF text spacing suddenly change when I click to edit?
This typically occurs when the original font used in the document is not embedded in the PDF and isn't installed on your Mac. The PDF editor attempts to substitute it with a similar font, which often has different character widths, causing the layout to shift or spacing to look incorrect.
How can I manually fix character spacing in a PDF?
In advanced PDF editors, you can click on the affected text box, open the text formatting properties panel, and manually adjust the 'Character Spacing' or 'Tracking' values. However, this is best used for minor adjustments rather than entire paragraphs.
Does upgrading my macOS fix PDF font encoding issues?
It can in some cases. System updates often include fixes for core graphic and text rendering engines (like macOS CoreText). If an OS-level bug is causing font mapping errors when exporting or reading PDFs, updating macOS may resolve the spacing issues.




