m-block v1.5
Manifest V3 Ad BlockerM-Block v1.5 delivers next-generation ad and tracker blocking powered by native browser Declarative Net Request filtering with 99.4% benchmark coverage, zero remote telemetry, and ultra-low RAM footprint.
Downloads & Release Files
Direct release packages hosted on GitLab. Free for personal & non-commercial use (CC BY-NC-ND 4.0).
Unpacked extension for Developer Mode (Chrome, Brave, Edge)
Direct drag-and-drop installation into chrome://extensions
Installation via about:debugging (Load Temporary Add-on)
Key Improvements & Enhancements
M-Block v1.5 introduces substantial filtering optimizations, reduced resource usage, and refined Declarative Net Request rulesets.
Optimized DNR Pipeline
Refined rule evaluation hierarchy reducing execution latency during heavy web page loads.
Anti-Circumvention Rules
Updated filter definitions against modern multi-stage tracking networks and ad injectors.
RAM Footprint < 15MB
Zero persistent background polling and hardware-efficient matching directly in the browser core.
Chromium & Firefox Builds
Tailored packaging matching the specific manifest requirement sets of both major browser ecosystems.
Installation Guide
Step-by-step setup guides for Chromium-based browsers (Chrome, Brave, Edge) and Mozilla Firefox.
Download and extract
Download m-block_1.5.zip and unzip the folder to a permanent local directory.
Open Extensions settings
In Chrome, Brave, or Edge, navigate to the extensions management console.
chrome://extensions
Enable Developer mode
Toggle the "Developer mode" switch located in the upper-right corner of the page.
Load unpacked extension
Click "Load unpacked" in the top toolbar and choose the unzipped m-block folder.
Download .crx package
Save m-block_1.5.crx onto your computer from the downloads section.
Open chrome://extensions
Navigate to chrome://extensions and ensure Developer mode is enabled.
chrome://extensions
Drag and install
Drag and drop the .crx file directly onto the chrome://extensions window to install.
Download Firefox package
Download and extract m-block_v1.5-firefox.zip to your local drive.
Open Debugging page
Navigate to about:debugging in Firefox and select "This Firefox" in the left sidebar.
about:debugging#/runtime/this-firefox
Load Temporary Add-on
Click "Load Temporary Add-on..." and select the manifest.json file from the extracted folder.
Click the M-Block toolbar icon to toggle ad blocking on the active domain or whitelist trusted services.
After changing domain settings or whitelisting, reload the tab to compile and apply new network rules.
Super Adblock Test Benchmark
Independent automated evaluation conducted on the Super Adblock Test suite measuring synthetic and real-world ad filtering efficiency across 507 test cases.
Network requests are matched at browser network socket layer before reaching web renderer processes.
Neutralizes multi-stage tracking networks, web socket ad beacons, and dynamic pop-under script injections.
Rule dictionaries are compiled to binary indexes, consuming less than 15MB of RAM per browser instance.
Manifest V3 Declarative Engine
M-Block v1.5 executes rule matching directly inside the browser's native network core with zero external telemetry or server dependency.
- • No Remote Telemetry: M-Block does not log or transmit visited URLs, queries, browser history, or analytics to any remote endpoint.
- • Declarative Execution: Network rules are evaluated within the browser's native C++ network engine.
- • Public Codebase: All extension code, build manifests, and rules are openly inspectable on the official GitLab repository.
- • Chromium & Firefox: Separate tailored release packages for Chromium-based browsers (Chrome, Brave, Edge) and Mozilla Firefox.
- • Lightweight Footprint: Minimal background footprint without continuous background worker polling or high CPU usage.
- • Clean UI: Fast popup interface for checking live blocking status and toggling site whitelist states.
Frequently Asked Questions
Technical answers regarding Manifest V3 implementation, updates, and zero-telemetry architecture.