- Find targeted fixes for common SumatraPDF problems.
- Browse troubleshooting guides organized by feature.
- Resolve display, printing, search, file, and settings issues.
- Display and Rendering Problems
- File Opening, Formatting, and Performance
- Search, Selection, and Copying
- Interface, Navigation, and Shortcuts
- Settings, Sessions, and Windows Integration
- Printing Problems
- Annotations and Highlights
- eBook Reading and Accessibility
- LaTeX and SyncTeX Integration
- Installation, Updates, and Tools
Use this troubleshooting hub to find focused help for SumatraPDF display, file opening, search, printing, annotation, settings, accessibility, LaTeX, and installation problems.
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1. Display and Rendering Problems
These guides cover appearance settings, color modes, scaling, text clarity, and incorrectly rendered pages.
- SumatraPDF Dark Mode Not Working
- SumatraPDF Invert Colors Not Working
- PDF Background Stays White in Dark Mode
- SumatraPDF Theme Colors Not Applying
- SumatraPDF Font Rendering Looks Broken
- SumatraPDF High DPI Scaling Is Blurry
- SumatraPDF PDF Text Is Blurry
- SumatraPDF Pages Render Blank or Black
2. File Opening, Formatting, and Performance
Start here when documents are slow, crash the application, open incorrectly, or use a problematic file format.
- SumatraPDF Large PDF Slow or Freezing
- SumatraPDF Crashes Opening a PDF
- SumatraPDF EPUB Not Opening
- SumatraPDF EPUB Formatting Looks Wrong
- SumatraPDF MOBI or AZW3 Not Opening
- SumatraPDF CHM or DjVu Not Opening
- SumatraPDF CBZ or CBR Comic Not Opening
- SumatraPDF HEIC or HEIF Not Opening
- SumatraPDF PostScript PS or EPS Not Opening
- SumatraPDF XPS or OXPS Not Opening
- Password-Protected PDF Not Opening in SumatraPDF
- SumatraPDF Unsupported File Format
3. Search, Selection, and Copying
Use these guides for document search, command-line search, visible search results, text selection, and clipboard problems.
- SumatraPDF PDF Search Not Finding Text
- SumatraPDF Scanned PDF Search Not Working
- SumatraPDF Ctrl+F or F3 Not Working
- SumatraPDF Search Highlight Is Hard to See
- SumatraPDF Copy Text Not Working
- SumatraPDF Text Selection Not Working
- SumatraPDF Copied Text Is Garbled
- SumatraPDF grep Tool Not Finding Text
4. Interface, Navigation, and Shortcuts
These articles address tabs, windows, bookmarks, hyperlinks, the command palette, and keyboard controls.
- SumatraPDF Hyperlinks Not Opening
- SumatraPDF Opens Every File in a New Window
- SumatraPDF Tabs Not Working
- SumatraPDF Home Tab Keeps Opening
- SumatraPDF Command Palette Not Opening
- SumatraPDF Keyboard Shortcuts Not Working
- SumatraPDF Custom Keyboard Shortcuts Not Working
- SumatraPDF Sidebar Bookmarks Missing
5. Settings, Sessions, and Windows Integration
Find help for preferences that do not persist, session history, remembered views, and Windows file associations.
- SumatraPDF Default App Not Sticking
- SumatraPDF Not Showing in Open With
- SumatraPDF Restore Session Not Working
- SumatraPDF Remember Last Page Not Working
- SumatraPDF Zoom or View Mode Not Remembered
- SumatraPDF Settings Not Saving
- SumatraPDF Portable Settings Not Saving
- SumatraPDF Recently Read Files Missing
- SumatraPDF Favorites Not Saving
6. Printing Problems
These guides cover standard, silent, and command-line printing, along with printer detection, scaling, output size, and advanced options.
- SumatraPDF Printing Not Working
- SumatraPDF Advanced Print Options Missing
- SumatraPDF Print Output Too Large or Slow
- SumatraPDF Print Scaling Is Wrong
- SumatraPDF Command-Line Printing Not Working
- SumatraPDF Silent Printing Fails
- SumatraPDF Printer Not Found
7. Annotations and Highlights
Choose a guide for annotations that fail to save, disappear, use the wrong colors, or cannot be created with a specific tool.
- SumatraPDF Annotations Not Saving
- SumatraPDF Highlight Tool Not Working
- SumatraPDF Annotation Colors Not Sticking
- SumatraPDF Free Text Annotation Not Working
- SumatraPDF Annotations Missing After Reopen
8. eBook Reading and Accessibility
These articles focus on eBook appearance and text-to-speech behavior, including font size, night mode, voice, and language.
- SumatraPDF eBook Font Size Not Changing
- SumatraPDF eBook Night Mode Not Working
- SumatraPDF Read Aloud Not Working
- SumatraPDF Text-to-Speech Uses the Wrong Voice or Language
9. LaTeX and SyncTeX Integration
Use this section to troubleshoot synchronization between PDF output and LaTeX source files or editors.
- SumatraPDF Inverse Search Not Working
- SumatraPDF Forward Search Not Working
- SumatraPDF SyncTeX Not Working
- SumatraPDF LaTeX Editor Not Opening
10. Installation, Updates, and Tools
These guides address damaged installations, missing program components, update checks, and unavailable command-line tools.
