Ad-Shield Defuser

Ad-Shield Defuser

Stop Ad-Shield from breaking the page you already blocked.

When DNS tools kill html-load.com, Ad-Shield retaliates — stripping CSS, popping “allow ads” walls, and redirecting you. This extension neuters that sabotage in the browser, before it runs.

Get the extension View source

The problem

Blocking harder is what triggers the wall.

Ad-Shield loader domains serve ads and detect blocks. On sites like WhatHiFi, TechRadar, and PC Gamer, a failed loader deliberately sabotages the page — not a side effect of your blocklist.

  1. 01

    Loader fails

    AdGuard Home or similar blocks html-load.com / css-load.com / friends.

  2. 02

    Page self-destructs

    Inline scripts strip stylesheets, fire dialogs, and drop a full-screen overlay.

  3. 03

    You need in-browser timing

    The fix has to run at document_start, in the page world, before Ad-Shield’s bootstrap executes.

How it works

Neutralize the bootstrap. Keep the layout.

It does not unblock ads. It stops the anti-adblock payload from running, with fallbacks if something still slips through.

  • Script blocking

    Intercepts the loader <script> and its obfuscated inline twin before execution.

  • Stylesheet guard

    Refuses removal of styles once Ad-Shield fingerprints appear.

  • Dialog & redirect blocks

    Silences fingerprint-matched dialogs and cancels navigations to *-load.com / error-report.com.

  • Remote rules

    Domain and text patterns update from a hosted rules file — usually without shipping a new build.

Install

Pick your browser stack.

Chromium and Firefox get the full MV3 extension. iOS needs the userscript path — every browser there is WebKit and cannot load Chrome/Firefox add-ons.

Chrome / Edge / Brave

Load the unpacked extension or install from a store build.

Install guide

Firefox

Temporary add-on for testing, or a signed AMO package for daily use. Needs Firefox 128+.

Install guide

iOS / iPadOS

Install via the free Userscripts app, then load the hosted userscript.

Get userscript

Designed to sit on top of AdGuard Home (or similar) — keep your DNS blocks; this stops the retaliation.