Draw a box over any part of a photo or screenshot to black it out or pixelate it — hide emails, phone numbers, faces, or account numbers. Free, no upload.
1. Upload Screenshot
Upload a screenshot, then draw boxes over anything you want to hide
About the Blur / Redact Image Tool
Before sharing a screenshot, hide sensitive information by drawing a box over it — choose a solid black box or a pixelated blur. DCPIXEL applies the redaction directly on canvas in your browser, so the original unredacted image never leaves your device.
100% Private — Processed in Your Browser
Every file stays on your device. DCPIXEL processes images entirely using the browser's built-in Canvas API and WebAssembly — zero server uploads, zero data collection.
Premium Features & Batch Processing
Get started with our free tier for single-file operations. Upgrade to DCPixel PRO to unlock high-speed batch processing, local AI background removal, and advanced PDF controls.
Frequently Asked Questions
What is the difference between the black box and pixelate options?+
The black box completely covers the area with solid color — the most secure option. Pixelate blurs the area into large blocks, which hides detail but is technically less irreversible than a solid box.
Is the redaction permanent in the downloaded file?+
Yes. The redaction is drawn directly into the image pixels before download — there is no hidden original data left in the exported PNG.
Can I undo a mistake?+
Yes. Use the Undo Last button to step back through your redactions one at a time before downloading.
User Reviews
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