and customize the background/text contrast for better readability. 2. The Mac Method: Apple Preview
Use the Enhance Scans or Optimize PDF features. You can also right-click specific images and choose "Edit Image" to adjust brightness manually. how to bright pdf file
(e.g., Ilovepdf, Smallpdf, Sejda): Upload PDF → Select "Enhance" or "Adjust brightness" → Increase brightness → Download You can also right-click specific images and choose
Open a blank Word document and go to to add your PDF (it may need to be saved as an image first, or simply dragged in). Right-click the document and select Format Picture . # Convert back to PDF page new_pix = fitz
# Convert back to PDF page new_pix = fitz.Pixmap(fitz.csRGB, img.tobytes()) page.insert_image(page.rect, pixmap=new_pix)
If your PDF is primarily a scan, you can use Microsoft Word to manipulate it like an image:
If you are dealing with a very old, dark scanned book, Photoshop gives you surgical control. This is the best way to get "pure white" backgrounds.
