Image redactor & blur
100% client-sideEasily conceal passwords, credit cards, faces, addresses, and confidential data on any image or screenshot. Drag and drop, select blur, blackout, or pixelate, and export securely. Everything runs in your browser without ever uploading your files to any server.
Drag and drop your image here
Upload any screenshot or photo to blur, blackout, or pixelate sensitive information. Or press Ctrl+V to paste from your clipboard.
Privacy guaranteed
Your images are processed purely inside your browser using HTML5 Canvas. No data is ever transmitted, stored, or analyzed on remote servers.
Irreversible flattening
Redactions are destructively burned into the exported pixels. There are no hidden vector layers or undoable masks that could expose your secrets.
Clipboard integration
Press Ctrl+V to paste screenshots directly from your clipboard, and click Copy to immediately paste the redacted image into Slack, email, or tickets.
Exif metadata stripping
Exported images are created fresh from the canvas, automatically removing sensitive GPS locations, camera serials, and timestamp metadata.
Why redact images locally?
When sharing screenshots of bug reports, invoices, customer support conversations, or ID cards, it is dangerously easy to leak private credentials, API keys, session cookies, phone numbers, or customer records.
Most online image editors require you to upload your files to their cloud servers to apply filters or redactions. This presents an enormous security and privacy vulnerability: your unredacted, confidential documents sit on third-party servers, potentially indexed or backed up indefinitely.
With Toolou Image Redactor, redaction happens 100% client-side. The original file never leaves your machine, works even without internet connectivity, and produces clean, high-resolution outputs suitable for professional handoffs.
Four ways to obscure sensitive data
An elegant Gaussian blur effect that renders text and features unrecognizable while preserving the visual aesthetic of the document or screenshot. Ideal for blurring background faces or UI noise.
The classic redaction bar. Solid black rectangles replace pixels entirely, making it the most secure choice for government IDs, credit card numbers, passwords, and API credentials.
Transforms the area into low-resolution digital pixel blocks. A recognizable aesthetic that clearly indicates intentional privacy redaction without leaving solid dark bars.
A solid white rectangle that blends smoothly into light-themed documents, invoices, legal notices, and white paper scans for a tidy, professional look.
How to redact an image in 3 simple steps
Upload or paste
Drag and drop an image onto the canvas, browse your files, or press Ctrl+V to paste any screenshot taken with your system screenshot tool.
Drag to obscure
Pick your preferred style (Blur, Blackout, Pixelate, or Whiteout) and drag over the sensitive content. Click any box to resize or reposition it.
Export securely
Click "Copy" to copy the redacted image directly to your clipboard, or click "Download" to save a fresh PNG, JPEG, or WebP file.
Common use cases for image redaction
- Engineering and DevOps: Sharing bug screenshots without leaking database connection strings, bearer tokens, secret keys, or customer emails in logs.
- Financial and billing: Anonymizing bank account numbers, CVVs, cardholder names, or billing addresses before submitting expense reports.
- Human resources and legal: Obscuring personal identification numbers (SSN, national IDs), compensation details, and medical disclosures in compliance with GDPR, HIPAA, and CCPA.
- Social media and community forums: Blurring faces of children or bystanders, house numbers, and vehicle license plates before posting public photos.
Frequently asked questions
No. When you copy or download the redacted image, the canvas flattens the pixels permanently. The original underlying pixels are completely discarded and replaced with solid color or downsampled values. There are no hidden vector layers, transparency tricks, or reversible masks.
Never. Toolou processes everything 100% locally in your web browser using HTML5 Canvas APIs. Your files never leave your computer or smartphone, and we collect zero telemetry on your images.
Yes. Because the exported image is freshly synthesized onto a blank HTML canvas, all metadata from the original photo—including GPS coordinates, device serial numbers, and camera shooting settings—is automatically stripped.
Yes! You can take a screenshot with your operating system's shortcut (e.g., Windows Snipping Tool or macOS Cmd+Shift+4) and simply press Ctrl+V (Cmd+V on Mac) anywhere on this page to start redacting immediately.
Yes. The drawing surface is fully optimized for touchscreens with pointer events and touch gestures. You can easily draw boxes, drag handles to resize them, and download directly to your mobile photo library.