Protect PDF
Protect your PDF content by flattening pages into images to prevent copying and editing.
Drag & drop your file here
or click to browse files
Supports .pdf up to 500 MB · Files stay private
How It Works
Upload your PDF
Drag and drop your PDF file or click to browse your device.
Choose image quality
Select the DPI (resolution) for the flattened pages. Higher DPI means sharper output but larger file size.
Download your protected PDF
Each page has been re-rendered as an image, preventing text selection, copying, and editing.
Why Use FreePDFApp?
- ✓Converts each page to a high-resolution image inside the PDF
- ✓Prevents text selection, copying, and editing of content
- ✓Preserves the visual appearance of every page
- ✓Choose from multiple quality/DPI settings to balance size and clarity
- ✓Processed entirely in your browser — your files never leave your device
Frequently Asked Questions
Each page of your PDF is rendered as a high-resolution image and then placed back into a new PDF. Because the content is now an image rather than selectable text, it cannot be copied, searched, or easily edited.
No. This tool does not add password-based encryption. Instead, it flattens your content into images so that text cannot be selected or copied. If you need password protection, you would need a server-side encryption tool.
Yes. The visual appearance is preserved at the DPI you choose. Higher DPI settings (200 or 300) produce output that is virtually indistinguishable from the original, especially for printing.
For on-screen viewing, 150 DPI is a good balance of quality and file size. For printing, choose 300 DPI. Standard (96 DPI) works well for quick sharing where file size matters most.
Text cannot be selected or copied directly. However, someone could use OCR (optical character recognition) software to attempt to extract text from the images. This protection deters casual copying but is not foolproof against determined efforts.
No. All processing happens entirely in your browser. Your PDF never leaves your device.
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