Image Blur & Redact
Hide sensitive information in screenshots before sharing.
💡 Tip: Click and drag to redact areas. Use larger brush for faces, smaller for text.
📖 Complete Guide to Image Redaction and Privacy Protection
In today's digital world, screenshots and images often contain sensitive information that shouldn't be shared publicly. Whether you're posting a customer support conversation, sharing a software tutorial, documenting a bug report, or creating content for social media, you need to hide personal details like names, email addresses, phone numbers, account numbers, faces, or confidential data. Our Image Blur and Redact tool provides professional-grade redaction capabilities directly in your browser, with no uploads required.
Unlike basic image editors that might leave traces of original data or use reversible techniques, this tool applies permanent redaction that cannot be undone once the image is downloaded. The blurred, pixelated, or blocked areas are completely replaced with new pixel data, ensuring the original information is gone forever. This makes it suitable for GDPR compliance, legal document preparation, journalistic sources protection, and any situation where complete information removal is essential.
How Image Redaction Works
When you apply redaction to an area of your image, the tool permanently modifies the underlying pixel data. For blur effects, the area is processed with a Gaussian blur algorithm that averages surrounding pixel colors. For pixelation, the region is divided into blocks with averaged colors. Solid color coverage completely replaces the original pixels. This is fundamentally different from simply placing a layer on top—the original data is mathematically destroyed and cannot be recovered.
Available Redaction Tools
| Tool | Effect | Best For | Intensity Options |
|---|---|---|---|
| 🌫️ Blur | Gaussian blur that softens details | Hiding text while keeping context visible | 5-40 blur radius |
| 🔲 Pixelate | Mosaic effect with averaged color blocks | Faces, profile pictures, small details | Block size 2-20 pixels |
| ⬛ Solid | Complete color coverage | Complete removal, sensitive numbers | 6 color options |
| 🖍️ Highlight | Semi-transparent overlay | Drawing attention (not for hiding) | 6 color options |
Key Features
- Complete Privacy: All processing happens in your browser—images are never uploaded to any server
- Permanent Redaction: Downloaded images have original data completely replaced, not just covered
- Adjustable Brush: Brush sizes from 10-150 pixels for precise or broad coverage
- Undo/Redo Support: Full editing history with up to 30 steps for experimentation without risk
- Zoom Controls: Zoom in for detailed work on small text or fine details
- Multiple Formats: Works with PNG, JPG, WebP, GIF, and BMP images
- Touch Support: Fully functional on tablets and touch-screen devices
💡 Pro Tip: For text redaction, use a brush size slightly larger than the text height and the Blur tool at medium intensity. This obscures the content while maintaining the visual structure of your screenshot. For faces, Pixelate often looks more natural and professional.