Chrome MV3 · Runtime Defense v1.5.4

GRAX: IMMUTABLE RUNTIME PROTECTION.

Defeat aggressive tracking matrices, pop-under tabs, and malicious ad loops with advanced DOM gesture containment.

6,748 optimized rules Zero pop-under shells Media-aware compatibility
RUNTIME CORE
DOMLOCKED
DNRACTIVE
MEDIASYNCED
Precision-calibrated for
YouTube Twitch Netflix Stripe PayPal OAuth
Core architecture

Four layers. One sealed runtime.

Every layer is calibrated to block hostile navigation without interfering with legitimate media, authentication, or payment flows.

01
Navigation containment

Target-Based Destination Lock

Stops unauthorized pop-under tabs before Chromium can initialize a new target, while trusted first-party platform routes remain native.

02
Playback compatibility

Media-Aware Runtime Bypass

Restores flawless native playback for YouTube, Twitch, Netflix, HLS, DASH, and modern Blob-powered video engines.

Streams verified
03
Network enforcement

Network Shielding Engine

Driven by 6,748 compressed, optimized dynamic browser filtering rules sourced from a much larger logical filter matrix.

04
Anti-tamper layer

Immutable Runtime Freeze

Natively resists hostile scripts attempting to delete, redefine, detach, or escape the extension’s MAIN-world protections.

Documentation

Protection that begins before page scripts do.

Grax injects its page guard at document_start in the MAIN world, then combines DOM containment with Chrome’s dynamic Declarative Net Request engine.

01

Install

Download the ZIP, extract it, open chrome://extensions, enable Developer mode, and load the extracted folder.

02

Protect

The guard activates automatically across pages, frames, dynamic realms, Shadow DOM surfaces, and programmatic navigation paths.

03

Stay compatible

Trusted platform families, OAuth providers, payment portals, CAPTCHA systems, and native media pipelines remain precision-exempt.

grax://runtime/guard LIVE
USER INPUT
GRAX CORE
SAFE TARGET
Immutable descriptors Target-aware routing Media-safe execution
Live simulation

Runtime defense telemetry.

Demo data stream
Ads Blocked Today 13,742 +18.4% simulated daily delta
Active Realms Shielded 284 100% runtime integrity
Runtime Attacks Neutralized 9,231 0 tab shells escaped
Deploy the shield

Make hostile ad runtimes hit a sealed wall.

Install Grax v1.5.4 and keep modern media fast, trusted applications untouched, and unauthorized tab targets dead on arrival.

Grax download startedOpen the package after it finishes.