Every Feature, Explained

🌐 Global Patterns

🇮🇳 India-Specific Patterns (Pro)

Luhn Algorithm

Every credit card number passes a Luhn checksum before being blurred. Random 16-digit order numbers are silently ignored.

Verhoeff Algorithm

Aadhaar uses Dihedral Group D5 math. A random 12-digit number has a ~10% chance of passing regex; it has near-0% chance of passing Verhoeff.

PAN Entity Check

The 4th character of a PAN card encodes the entity type (P=Person, C=Company, H=HUF). We verify this before blurring.

GSTIN State Code

The first 2 digits of a GSTIN encode the Indian state (01–38). We verify this, then re-validate the embedded PAN.

DOB Calendar Check

Matched dates are parsed into real calendar objects. Impossible dates, future dates, and ages over 120 are rejected.

UPI Heuristic

UPI IDs look like emails, but email domains have dots (e.g., .com). We detect the absence of a TLD to classify UPI IDs.

Custom Rule Builder

Every organization has proprietary data formats. With Custom Rules, you can define your own redaction logic without writing any code.

• Keywords: Type any word or phrase to blur every instance of it on the page.
• Regex: Enter a pattern like /EMP-\d{5}/g to blur matching strings across the whole DOM.
• Sync: All rules sync via chrome.storage.sync across all your devices automatically.

Manual Blur Mode

Sometimes algorithms can't catch what you need to hide — a chart, an SVG, an image. Manual Blur Mode gives you a point-and-click override.

• Activate: Click "Enable Manual Blur Mode" in the popup.
• Select: Hover over any element on the page — it highlights with a blue dashed border.
• Blur: Click to instantly apply a CSS blur to that element.
• Exit: Press Escape to return to normal mode.

Alt-Key Quick Reveal

Hold the Alt key on your keyboard while hovering over any blurred element to temporarily reveal its contents. Release to re-blur instantly. Perfect for quick verification during a session.

Two Redaction Modes

Choose how sensitive data is hidden:

• CSS Blur: Applies a smooth Gaussian blur. Content remains in the DOM but is visually unreadable.
• Asterisks: Replaces characters with ****. Ideal for screen recordings where blur artifacts may be visible.