| Your Situation | Best Method | | :--- | :--- | | It's a one-page scan, I'm in a hurry | Online tool (Sejda / Smallpdf) | | I have Adobe Acrobat Pro | Enhance Scans > Remove Background | | I only have free Adobe Reader | Invert colors (Viewing only) or Print to XPS | | I have Microsoft 365 | Word Conversion (Method 4) | | The PDF is a rare, old book scan | Photoshop Levels (Method 5) | | I need to do 500 pages | Python script (Method 6) |
: Right-click an image within the PDF and select Edit Image . This will open an adjustment panel with sliders for brightness and shadows. how to bright pdf file
Stop squinting at dark gray pages. Use one of these six methods today to bring your PDFs into the light. | Your Situation | Best Method | |
Use (desktop) or Sejda.com (online, no signup for basic use). Both let you increase brightness numerically. Use one of these six methods today to
To do 50 pages at once, use the "Action" feature (Window > Actions) to record the Levels adjustment, then run File > Automate > Batch .
Go to . This opens a panel with exposure and contrast sliders.