Smart Screenshot Redactor
Auto-detects emails, phone numbers, card numbers, and API keys in your screenshot, then hides them in one click — 100% in your browser, free, with no signup and no caps. Competitors like Scribe's Smart Blur and Snagit's AI redact gate automatic detection behind a paid plan; here it's free for everyone, and your screenshot never leaves your device.
100% in your browser — nothing is uploaded
Detection and redaction both run on your device. No signup, no limits, no watermark.
Drop a screenshot here, or click to browse
PNG, JPG, or WebP · Add as many as you like
Or paste with Ctrl+V / Cmd+V — works right now, no click needed
How to redact a screenshot before sharing it
Auto-detect emails, phone numbers, card numbers, and API keys, then hide them — all in your browser, in three steps.
Sharing a screenshot — a support ticket, a bug report, a payment confirmation — is one of the easiest ways to accidentally leak something you didn't mean to: an email thread's full address, a card number sitting in a payment app, an API key visible in a code editor. Manually drawing boxes over each one is slow and easy to get wrong. This tool reads the text in your screenshot with OCR, runs it through a set of detectors built for exactly this kind of leak, and lets you hide everything it finds — or anything you point at yourself — in one click.
How it works
- Drop, paste, or pick a screenshot. Paste (Ctrl+V / Cmd+V) works the instant the page loads — no need to click anything first.
- Automatic detection runs locally. Tesseract.js (an open-source OCR engine compiled to WebAssembly) reads every word in the image inside a Web Worker, so the page never freezes. A set of pattern- and checksum-based detectors then scans that text for emails, phone numbers, card numbers, IBANs, UPI IDs, URLs, API keys, and ID numbers like PAN, Aadhaar, and SSN.
- Review and redact. Each match shows up as an outlined, color-coded box. Click any box to toggle it, flip a whole category on or off, hit "Redact all detected" for everything at once, or draw your own rectangle or freehand mark over anything the detector missed — then export.
Why solid blocks are safer than blur or pixelation
Blur and pixelation don't actually erase the underlying pixels — they average or smear them, and averaging can sometimes be reversed, especially on short, structured text like a 16-digit card number or a 4-digit PIN. Security researchers have repeatedly shown this with both deblurring and depixelation attacks. A solid block instead paints over the pixels with a flat color, permanently destroying the original data with nothing left to reconstruct. This tool defaults to solid for exactly that reason, and shows a warning whenever you switch to blur or pixelate.
What stays on your device
The entire pipeline — reading the image, running OCR, detecting sensitive text, and rendering the final redacted image — happens in your browser tab. Nothing is uploaded at any point, which you can verify yourself in your browser's Network tab. The exported file is drawn fresh onto a new canvas, so there's no hidden layer under the redaction and no EXIF or location metadata carried over from the original.
Redaction Features
Everything you need to hide sensitive info in a screenshot before sharing it
Auto-Detection
Emails, phones, cards, API keys & more
Luhn & IBAN Checks
Checksums cut down on false positives
Click to Toggle
Turn any detected box on or off
Category Toggles
Hide a whole type at once, with counts
Manual Tools
Draw a rectangle or freehand brush mark
Solid / Pixelate / Blur
Solid is the safest, permanent choice
Undo / Redo
Full history, per image
Batch Processing
Redact as many screenshots as memory allows
Zero Metadata
Exported images carry no EXIF data
Supported Formats
Upload any common screenshot format
PNG
Most common screenshot format
JPG
Compressed photos and screenshots
WebP
Modern, smaller web format
Smart Screenshot Redactor — Frequently Asked Questions
Everything you need to know about redacting sensitive info in a screenshot
Is my image uploaded anywhere?
What does it detect automatically?
Why solid blocks instead of blur or pixelation?
Does it work on phone screenshots?
Can it miss things?
Does the exported image remove metadata like EXIF/location data?
Is there a limit on how many screenshots I can redact?
Redaction Guide
Tips and best practices for hiding sensitive info
Why automatic detection usually costs money elsewhere
Competing tools like Scribe's Smart Blur and Snagit's AI redact both gate automatic sensitive-info detection behind a paid tier — the free versions make you draw every box by hand. Because this runs entirely on your own device's CPU instead of a server somewhere, there's no per-scan cost to us, so there's no reason to ration it.
Checksums beat plain pattern-matching
A 16-digit number isn't automatically a card number — most random 16-digit strings fail the Luhn checksum every real card number satisfies. Rather than flagging any digit string that's roughly the right length, card and IBAN detection here run the actual checksum algorithm, which cuts down on flagging things that just happen to look like one.
Getting better detection
OCR accuracy depends on image quality: a sharp, in-focus screenshot at its native resolution reads far more reliably than a blurry photo of a screen or a heavily compressed re-upload. If detection seems to be missing obvious text, try a higher-resolution capture of the same screen.
Automatic detection is a first pass, not a guarantee
No detector catches everything — unusual formats, handwriting, very small text, or text OCR simply misreads can all slip through. Treat the automatic pass as a fast first draft, give the image a once-over yourself, and use the manual rectangle or brush tool for anything it missed before you share it.
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