Free PDF Redaction Tool
Blur, pixelate, or redact sensitive information from images and PDFs — entirely in your browser, with no file uploads, no account, and no cost.
Your files never leave your device
All blurring and redaction happens entirely in your browser. No uploads. No servers. Nothing is ever sent anywhere.
Drop your image or PDF here
or click to browse — PNG, JPG, WebP, GIF, PDF up to 50 MB
Blur or Pixelate Any Image
Use the freehand brush for irregular shapes, the rectangle tool for text blocks and form fields, or the ellipse tool for faces. Choose between smooth Gaussian blur or solid pixelation — whichever fits your use case.
Redact PDFs in Your Browser
BlurPen is the only free browser tool that handles both images and PDFs. Upload a multi-page PDF, navigate page by page, apply redactions, and export a clean PDF — all without Adobe Acrobat or any server connection. Learn more about PDF redaction →
No Upload, No Account, No Cost
Every pixel of your file stays on your device. BlurPen uses the HTML5 Canvas API and self-hosted libraries — zero outbound requests after page load. The tool is free because ads fund it; your files are never the product.
Got a PowerPoint you need to redact?
BlurPen doesn't support .pptx files directly — but it takes about 10 seconds to work around this. In PowerPoint or Google Slides, go to File → Save as PDF (or File → Download → PDF in Google Slides), then drop the PDF straight into BlurPen. You'll get full page-by-page redaction with no loss of quality.