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Redact or blur confidential text, images, personal data in PDF files. FREE online tool for secure document sharing. No watermarks, no registration. Blur sensitive content in PDF files quickly and securely online.
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Blur any part of a PDF with precision while preserving the original structure.
Choose exactly what you want to blur — such as names, addresses, signatures, or full paragraphs.
Easily adjust blur intensity using interactive sliders and precision tools.
Apply the same blur settings to multiple pages or entire documents effortlessly.
Ensure sensitive data stays permanently hidden through irreversible blurring.
Unlock protected areas to apply blur safely and precisely.
Automatically detect highlighted or annotated areas and convert them into blurred regions.
For scanned PDFs, OCR identifies text so you can blur words, lines, or paragraphs.
Blur fields containing sensitive data such as personal numbers, signatures, and more.
Maintain a clean and professional PDF appearance while blurring selected areas.
Blur multiple PDF files quickly using preset workflows and automation.
Use the PDF blur tool on any modern device or browser—no installation required.
Your files never leave your device. Blurring is processed locally using secure in-browser technology.
After blurring sensitive information, you may want to further edit your document. Use our Edit PDF Online tool to modify text or images.
To reduce file size after processing, try our Compress PDF tool for faster sharing.
If you need the blurred document in another format, you can also convert your PDF to other file types easily.
Blurring parts of a PDF is an effective way to hide sensitive information while keeping the rest of the document visible. Whether you need to protect personal data, mask confidential sections, or create preview versions, blur tools help you share documents safely without permanently removing content.
When sharing documents publicly or with third parties, sensitive details such as phone numbers, emails, addresses, or ID numbers should be hidden. Blurring allows you to mask this information without altering the rest of the document.
This is especially useful for invoices, resumes, contracts, and forms where only specific sections need protection while the rest of the content remains readable.
Instead of deleting sensitive content, blurring allows you to temporarily hide specific areas. This is ideal for contracts, financial documents, and internal reports that contain confidential sections.
You can blur prices, signatures, internal notes, or proprietary data while still allowing viewers to understand the document structure.
When sending preview documents to clients or publishing samples online, you may want to hide sensitive parts while showing the overall layout. Blurring allows you to create safe preview versions of your PDFs.
This is commonly used for reports, ebooks, proposals, and templates where certain information should remain private until final delivery.
Blurring sensitive data helps meet privacy requirements when sharing documents externally. It reduces the risk of exposing confidential information while keeping the document usable.
This is useful for HR files, legal documents, financial statements, and customer records that contain protected information.
Our Blur PDF tool allows you to selectively blur text, images, or entire pages in your PDF documents for privacy protection, redaction, and visual effects.
Apply blur to specific elements: text only (for redacting sensitive information), images only (for obscuring photos), or entire pages. Select areas using rectangle selection or automatic text detection. Perfect for protecting personal information, confidential data, or sensitive visuals.
Control blur strength from subtle (5px) to heavy (50px+). Low intensity for gentle obscuration, high intensity for complete content masking. Fine-tune the blur radius for different use cases – from light redaction to full content hiding.
Choose from different blur effects: Gaussian Blur (smooth, natural-looking), Box Blur (pixelated effect), Motion Blur (direction-specific), or Pixelation (blocky redaction). Each type creates a different visual effect for various privacy and design needs.
Automatically detect and blur specific text patterns: email addresses, phone numbers, credit card numbers, social security numbers, or custom keywords. Perfect for bulk redaction of personal information across multiple pages.
Apply blur to all pages, specific page ranges (e.g., pages 1-10), or individual pages (e.g., 1,3,5,7). Perfect for blurring only specific sections of a document while keeping other content clear and readable.
Live preview shows the blur effect in real-time as you adjust settings. See exactly what your document will look like before downloading. Compare original and blurred versions side-by-side for verification.
Full undo/redo functionality for blur operations. Remove or adjust blur effects with simple controls. Perfect for experimenting with different blur settings without permanently altering your document.
All blur processing happens directly in your browser using Canvas and PDF-Lib. Your PDF never leaves your device – no upload to external servers, no cloud processing, no third-party access. Complete privacy for confidential documents and sensitive information.
Upload your PDF to DonePDF, select the blur tool, highlight the text or image you want to hide, and download the blurred PDF instantly.
Yes, DonePDF allows you to blur PDF files online for free with no registration required.
Yes, you can blur both text and images in your PDF to protect sensitive information.
Your files are processed securely and automatically deleted after processing to ensure your privacy.
No, DonePDF does not add any watermark to your blurred PDF files.
Yes. You can blur multiple areas across one page or multiple pages. This is useful when a document contains several sensitive fields. Each blurred region is applied independently so you can control exactly what gets hidden.
No. Blurring only affects the selected area visually. The rest of the document remains unchanged. Text, images, and layout outside the blurred region keep their original quality.
Yes. The blur tool works with scanned PDFs and image-based documents. You can blur areas just like normal PDFs. This is useful for hiding information in scanned contracts, IDs, and printed documents.
Yes. Files are processed securely and automatically deleted after processing. Your documents are not stored permanently. This ensures privacy when working with sensitive or confidential PDFs.
Yes. You can adjust the blur strength to control how much content is hidden. Stronger blur makes text completely unreadable. This allows you to balance visibility and privacy depending on your needs.
Yes. You can apply blur to the entire page if you want to hide everything. This is useful for preview documents or protected samples. You can also blur only selected pages instead of the whole document.
Blurring may slightly increase file size depending on the number of blurred areas. In most cases, the increase is minimal. The document structure remains optimized for sharing.
Yes. You can blur only the selected area. This means text, images, or specific sections can be blurred independently. Everything outside the selected area remains unchanged.
Blurring hides content visually while keeping it in the document. Redaction permanently removes content. Blur is best for previews, while redaction is best for permanent data removal.
Yes. The Blur PDF tool is completely free to use. You can blur sensitive information without any limits. No installation or signup is required.
After adding blank pages, you can further refine your document by merging multiple PDFs, removing unwanted pages, or splitting into separate files.
Explore these complementary tools to manage, rearrange, and optimize your PDF pages.
Explore the full collection of tools in the PDF Security Tools.