Everything PrivacyGuard Protects You From
Five protection layers, built on Manifest V3, running in under 8 MB of memory. No performance cost. No data sent to servers. No compromises.
Protection Layers
Each layer operates independently — all run together automatically on every page.
Tracker & Ad Blocking
Declarative Net Request Blocking
Blocks known trackers using Chrome's Manifest V3 Declarative Net Request API — the most efficient blocking method available, with zero performance overhead.
- Google Analytics & GA4 blocking
- Facebook Pixel & Meta tracking prevention
- Amazon, LinkedIn, and Twitter ad pixels
- Third-party analytics scripts (Mixpanel, Amplitude, Segment)
- Data broker and surveillance network blocking
- Custom blocklist support
Cosmetic Filtering
Removes ad placeholders and tracking elements from the DOM after page load, eliminating layout shifts and empty ad containers that slow down pages.
- Removes empty ad containers
- Eliminates cookie consent noise (non-blocking banners)
- Hides social share spy buttons
- No visible page flicker or layout shift
Fingerprint Detection
7-Method Fingerprint Detection
Detects all major fingerprinting techniques in real time and surfaces them in the extension popup so you know exactly what each site is attempting.
- Canvas fingerprinting (2D and WebGL)
- Audio context fingerprinting
- Battery API fingerprinting
- Font enumeration fingerprinting
- Screen and viewport probing
- Navigator and hardware profiling
- WebRTC IP leak detection
Fingerprint Risk Score
Each detected fingerprinting method contributes to the site's overall privacy risk score, helping you understand how aggressively a site is trying to identify you.
- Per-method severity weighting
- Real-time score update as scripts execute
- Historical comparison across visits
Cookie Management
Full Cookie Audit
Reads and categorizes every cookie set on a page — essential, analytics, marketing, and unknown — so you understand exactly what data is being stored about you.
- Cookie name, value, and expiry display
- First-party vs. third-party classification
- SameSite and Secure flag inspection
- HttpOnly flag detection
- Marketing cookie identification
- Persistent vs. session cookie distinction
Automatic Cookie Consent Management
Intercepts cookie consent banners and rejects non-essential cookies automatically, without the pop-up theater that slows you down.
- Supports 500+ consent banner frameworks
- Rejects analytics and marketing cookies by default
- Whitelistable per domain
- No false positives on essential cookies
Privacy Scoring
Real-Time 0–100 Privacy Score
Every site you visit gets a privacy score calculated instantly from four factors: trackers found, cookies set, fingerprinting attempts, and connection security.
- Score updates in under 200ms
- Color-coded A–F grade in the toolbar icon
- Breakdown of score components
- Score history per domain
- Worst-offender leaderboard in dashboard
7-Day Privacy Dashboard
Your extension dashboard shows a rolling 7-day view of your privacy health — how many trackers were blocked, which sites were worst, and whether things are improving.
- Daily tracker block totals
- Top 10 worst offender sites
- Score trend chart
- Total fingerprinting attempts thwarted
- Exportable CSV report
Connection Security
HTTPS Enforcement & Warning
Detects insecure HTTP connections and warns you before you submit any form data. Flags mixed-content pages where resources load over HTTP even on HTTPS sites.
- Real-time HTTP detection
- Mixed-content page warnings
- Form submission interception on HTTP pages
- SSL certificate expiry warnings
WebRTC Leak Prevention
Prevents WebRTC from leaking your real IP address even when using a VPN or proxy, closing one of the most common browser privacy holes.
- Masks local IP in WebRTC requests
- Configurable per-site
- Works alongside any VPN
PrivacyGuard vs. The Alternatives
How PrivacyGuard compares to uBlock Origin and DuckDuckGo Privacy Essentials — the two most popular privacy extensions on the Chrome Web Store.
| Feature | PrivacyGuard | uBlock Origin | DuckDuckGo PE |
|---|---|---|---|
| Tracker blocking | Yes | Yes | Yes |
| Ad blocking | Yes | Yes | No |
| Fingerprint detection | Yes | No | No |
| Cookie audit & categorization | Yes | No | No |
| Real-time privacy score (0–100) | Yes | No | No |
| Cookie consent auto-rejection | Yes | Extension | No |
| WebRTC leak prevention | Yes | No | No |
| HTTPS enforcement warnings | Yes | No | Yes |
| Data breach alerts | Yes | No | No |
| 7-day privacy dashboard | Yes | No | No |
| Per-domain whitelisting | Yes | Yes | Yes |
| Custom filter lists | Coming | Yes | No |
| Free tier | Yes | Yes | Yes |
| Manifest V3 compatible | Yes | Partial | Yes |
| Zero data collection | Yes | Yes | Partial |
Comparison based on publicly documented features as of April 2026. Subject to change.
Technical Specifications
Built on Manifest V3 for performance, security, and long-term Chrome compatibility.
- Manifest Version
- V3 (Declarative Net Request)
- Blocking Engine
- Declarative Net Request API
- Memory Footprint
- < 8 MB at rest
- CPU Impact
- < 0.5% on modern hardware
- Tracker Database
- Updated weekly
- Browser Compatibility
- Chrome 88+, Edge 88+, Brave, Opera, Vivaldi
- Permissions Required
- declarativeNetRequest, storage, tabs (active tab only)
- Background Service Worker
- Event-driven — does not run continuously
- Local Storage Only
- No data sent to servers (free tier)
- Open Source Components
- Filter lists: EasyList, EasyPrivacy (CC BY 3.0)
Why Manifest V3? Chrome deprecated Manifest V2 in 2024. MV3 uses Declarative Net Request instead of webRequest, which means blocking decisions are made by the browser engine — not JavaScript — resulting in faster blocking, lower memory usage, and better security. PrivacyGuard was built on MV3 from day one.
All Features. Free. Right Now.
Install PrivacyGuard in 30 seconds. No account required to start. All core features are free, forever — tracker blocking, fingerprint detection, cookie analysis, privacy scoring, and HTTPS enforcement.