Hide sensitive details
Quickly blur or blackout names, addresses, license plates and more before sharing screenshots or photos.
Black out sensitive details in screenshots
Hide names, email addresses and account details before sharing a screenshot or photo. Free, no sign-up; your image stays 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.
Mask my screenshot
The sample contains fictional details. Choose Black box to cover text, then download a separate PNG.
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 obscures details but can leave clues, especially in text. For names, emails and account numbers, use a solid black box that fully covers the text and inspect the saved image.
Can the redaction be reversed or removed?
This tool adds masks; it does not reveal text hidden in someone else's image. An opaque black box replaces covered pixels in the exported PNG. Blur is not a guarantee that information cannot be inferred. Keep your original separately if you need it.
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.
What does it mean to redact an image?
Redacting an image means covering the parts you do not want to share — names, addresses, faces, account handles or amounts — with a blur or a solid black box. With Tracelyx you just drag over the area to mask it, and nothing is uploaded to a server.
How do I redact a photo or screenshot online?
Open the screenshot, drag over the area you want to hide, choose blur or a black box, then download. You can hide names, e-mail addresses, phone numbers and profile pictures in the same pass. Everything runs in your browser, so the personal data never leaves your device.
Do I need to install an app to black out part of an image?
No. Tracelyx Redact runs entirely in the browser, so there is nothing to install and no account to create. Load the image, drag over what you want to remove, apply the black box and save. It works the same way on a phone.
Can I redact several areas in one photo?
Yes. Add as many blur or black-box areas as you need before saving, and use undo to step back through them one at a time. The redactions are only baked into the file when you download it.
How to Use Tracelyx Redact: A Complete Guide
Redact an Image in 3 Steps
- Open your image — Select a JPEG, PNG or WebP, or use the fictional sample. The image is loaded into this browser, not sent to a server.
- 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.
- Save a separate PNG — Download the result and open the saved file to check every masked area before sharing. Keep the unedited original separately.
Blur vs Black Box: When to Use Each
Blur reduces visible detail but can leave shapes or readable clues. Avoid relying on blur to protect private text such as names, emails and account numbers.
Black box paints opaque black brush strokes over the image. Choose a brush large enough to cover every character, including its edges. Inspect the exported PNG at full size before sharing; this tool does not certify legal or compliance requirements.
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.
