How to Redact Sensitive Information from a Screenshot
Screenshots often contain more private information than you notice at first: an email address in a profile menu, an order number in a confirmation page, a home address in a delivery screen, or a QR code that opens a personal account. Before posting or sending a screenshot, redact every detail that the recipient does not need to see. ImgToolkit's Image Redaction tool lets you draw over arbitrary regions with a solid cover, blur, or pixelate effect. It runs in your browser, so the original image is not uploaded to a server.
Quick Answer
Screenshots often contain more private information than you notice at first: an email address in a profile menu, an order number in a confirmation page, a home address in a delivery screen, or a QR code that opens a personal account. Before posting or sending a screenshot, redact every detail that the recipient does not need to see.
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Step-by-Step Guide
6 steps · takes under 1 minute
Open the Image Redaction tool
Go to ImgToolkit's Image Redaction tool. It is designed for screenshots and also accepts ordinary JPG, PNG, and WebP images.
Upload the screenshot
Drop your screenshot into the upload area or choose it from your device. The image is read locally by your browser and is not sent to a server.
Draw over each private detail
Drag a rectangle across every email address, phone number, order ID, address, name, QR code, or private message that should not be shared. Add separate rectangles for separate areas.
Choose a redaction method
Use Solid cover for sensitive text and numbers, Blur for less-sensitive context, or Pixelate when you want the area to remain visibly part of the screenshot without readable detail.
Review the entire screenshot
Scan the original carefully from top to bottom. Check menus, browser tabs, notification previews, usernames, URLs, image thumbnails, and any detail outside the first redaction area.
Download and inspect the PNG
Download the full-resolution PNG, open the downloaded file separately, and inspect it again before sharing. The exported file contains the redaction marks rather than editable overlays.
100% Private — Zero Uploads
ImgToolkit runs entirely in your browser using the Canvas API. Your images are never sent to a server, never stored in the cloud, and never seen by anyone else. This makes it safe for sensitive documents, client work, medical imagery, and confidential screenshots.
Pro tip
Use 75–85% quality for web images — you get 60–80% smaller files with no visible difference at normal screen sizes.
Format & File Size Comparison
Same 1080×1080px photo processed four ways
| Format | Quality | File Size | Notes |
|---|---|---|---|
| PNG (original) | Perfect | 4.2 MB | No compression — too large for web |
| Compressed PNG | Visually identical | 1.1 MB | −74% — transparency preserved |
| JPG (85% quality) | Excellent | 310 KB | −93% · Best for photos |
| WebP (85%)BEST | Excellent | 205 KB | −95% · Recommended for web |
Based on a 1080×1080px photo. Results vary by image content and complexity.
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Frequently Asked Questions
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