Redact PDF
Permanently black out or cover sensitive information in your PDF files. Your files are processed entirely in your browser, ensuring 100% privacy.
Securely Redact PDF Files Locally
Preparing your PDF preview...
Next Steps: Perfect Your PDF Document
Perform more actions on your PDF files securely and offline.
Protect PDF
Lock your sensitive PDF files with robust encryption. Ensure only authorized users can access them.
Sign PDF
Electronically sign your PDF files in seconds. Draw, type, or use an image signature securely.
Add Watermark
Protect your documents with custom text or image watermarks. Maintain your brand identity with ease.
Compress PDF
Optimize and shrink your PDF for easier email sharing. Keep your documents light and fast.
Love using DumPDF? 🚀
Help us decide what to build next! Request features, report bugs, and chat with the dev on
Share this with your friends
Privacy Guaranteed
Your PDF files are processed entirely within your browser. No data is uploaded to any server, ensuring complete privacy and security during the redaction process.
How to Securely Redact a PDF
1. Select Your PDF
Click 'Select PDF File' or drag and drop your document. A high-quality preview will be generated in your browser.
2. Draw Redaction Marks
Choose a shape (rectangle/circle) and color. Click and drag on the PDF preview to cover sensitive text or images. You can resize, move, and change the color of any redaction mark.
3. Download Your PDF
Click 'Download Redacted PDF'. The tool will permanently apply the redaction marks and save the new, secure PDF to your device.
Frequently Asked Questions about PDF Redaction
Is this redaction tool HIPAA and GDPR compliant?
Yes. Because our tool processes all data locally within your browser, your sensitive documents are never uploaded to a server. This architectural choice makes it inherently compatible with HIPAA, GDPR, and other strict data privacy regulations.
What do the different border colors on the shapes mean?
The borders help you understand the status of a shape. A dotted red border means the shape is deselected. A solid blue border means the shape is currently selected, and you can resize, move, or change its color. The "X" button and resize handles also appear on selected shapes.
How can I select and modify multiple redaction shapes at once?
You can easily manage multiple shapes. On a desktop, hold down the Shift key and click on each shape you want to select. Once selected, you can change the color for all of them at once using the color picker. On mobile, you can select shapes one by one.
Is this tool safe for redacting confidential documents?
Yes, it is the safest method available. Since all processing happens locally in your browser, your confidential documents are never uploaded to a server. This guarantees your privacy.
What is 'Flatten PDF' and when should I use it?
Flattening provides maximum security by converting each page into an image. This makes the original text layer completely unrecoverable. Use this for highly sensitive documents. The trade-offs are that the final file may be larger, and the text will no longer be searchable or selectable.
Can I choose a color other than white for redaction?
Yes. While white is the default, you can use the color picker to select any color you wish. You can even use the eyedropper tool to match a color from the document itself for a cleaner look.