Hide sensitive details
Quickly blur or blackout names, addresses, license plates and more before sharing screenshots or photos.
Redact Tool – Hide sensitive info in images
Blur or blackout names, addresses and other private details before sharing images. All processing runs locally in your browser.
Draw over any area to blur or black-box it. All redaction runs in your browser — your image is never uploaded to any server.
Click or drop to start
Use the tools on the right to hide sensitive areas.
Simple redaction tools
Switch between blur, black box and line tools. Adjust brush size with a single slider.
Private by default
All redaction runs locally in your browser. Images never leave your device.
Great for work & personal use
Perfect for customer support screenshots, invoices, school documents and any image that needs quick masking.
Who uses Tracelyx Redact?
Anyone who needs to share images without exposing private details — no app, no upload.
Business & Support Teams
Redact customer names, order numbers, and account details from screenshots before sharing them in internal reports or escalations. Keep sensitive data out of communication threads.
Legal & Compliance
Mask personal identifiers, signatures, and case-sensitive details from documents before sharing with external parties. A fast, private alternative to dedicated redaction software.
Educators & Researchers
Anonymize student work, survey responses, and research materials before publishing or presenting. Hide names and identifying details without altering the content itself.
Social Media Users
Blur out phone numbers, addresses, and other personal details from screenshots before posting online. A quick step that protects your privacy and the privacy of others.
Web Developers & Designers
Hide test data, internal URLs, and client-specific content from UI screenshots before adding them to portfolios, case studies, or documentation.
Personal Use
Mask license plates, house numbers, faces, and other details from photos before sharing with friends or posting on social media. Simple, fast, and completely private.
Frequently Asked Questions
Is my image uploaded to a server?
No. All redaction processing happens entirely in your browser using local processing. Your files never leave your device and are never sent to any server.
What is the difference between blur and black box?
Blur applies a mosaic-style effect that obscures the area while keeping the shape of the content visible. Black box completely covers the area with a solid black fill, leaving no visual trace of the original content.
Can the redaction be reversed or removed?
No. Once you download the redacted image, the hidden areas are permanently baked into the file. The original content cannot be recovered from the downloaded image.
Can I undo a redaction I just made?
Yes. Use the Undo last button to step back one action at a time, or Clear all to remove all redactions and start over — as long as you have not downloaded the image yet.
Is Tracelyx Redact free?
Yes, completely free. No account required, no usage limits, no watermarks.
Which file formats are supported?
Tracelyx Redact supports JPEG, PNG, and WebP as input. The redacted image is saved as a PNG to preserve the quality of all redaction layers.
How to Use Tracelyx Redact: A Complete Guide
Redact an Image in 3 Steps
- Upload your image — Drop a JPEG, PNG, or WebP file onto the tool, or click to select it. The image loads directly into the redaction canvas in your browser.
- Draw over areas to redact — Select Blur or Black box mode, then drag over any area you want to hide. Use the brush size slider to cover wider areas in fewer strokes. Use Eraser mode to correct mistakes, or Undo last to step back one action.
- Download the redacted image — Click Download to save the result as a PNG. The redacted areas are permanently baked into the output file — they cannot be reversed or recovered.
Blur vs Black Box: When to Use Each
Blur applies a mosaic-style pixelation effect over the selected area. It makes the content unreadable while preserving the visual shape of what was there — useful for faces, license plates, and background details where the viewer should understand that something exists but cannot read it. Blur is the right choice for photos and screenshots where context matters.
Black box completely replaces the area with a solid black rectangle. It is the standard for document redaction — legal filings, compliance documents, contracts, and any context where leaving visual hints of the original content is not acceptable. Use Black box whenever the redacted content must leave no trace. For redacting text in screenshots or document images, Black box is almost always the correct choice.
Why Your Image Never Leaves Your Device
Most online redaction tools work by uploading your image to a server, processing it remotely, and returning the result. This creates a window during which your original, unredacted image exists on a third-party server. For images containing sensitive personal information, confidential business data, or legally protected content, this upload step is a genuine privacy risk — the original content is transmitted before any redaction is applied.
Tracelyx Redact processes everything locally in your browser using the HTML Canvas API. Your image is loaded into browser memory, redaction is drawn directly on the canvas, and the output PNG is generated entirely on your device. Nothing is sent to any server at any point. This makes Tracelyx Redact safe for processing medical records screenshots, legal documents, internal business data, and any content you would not want transmitted to a third party.
Common Redaction Workflows
For customer support teams, the most common workflow is redacting screenshots before sharing them in tickets or escalation threads. Account numbers, email addresses, order IDs, and personal names should be blacked out before any screenshot enters a shared channel or external system. A fast redaction step before sharing keeps sensitive customer data out of places it should not be.
For personal use, the most common case is removing license plates, house numbers, faces, and identifying details from photos before posting on social media. Redact runs directly in your browser — there is no app to install, no account to create, and no image to upload. Open the tool, redact the photo, download the result, and post it. The entire workflow takes under a minute.
