Most guides on this blog focus on desktop browsers, though plenty of browsing happens on a phone. Whether ElementHider works on mobile depends on which operating system you use.
Android: Firefox for Android (works today)
Firefox for Android supports standard WebExtensions, the same extension format ElementHider uses on desktop, so installation and daily use work the same way.
Install Firefox for Android
Skip this if you already have it. Get it from the Google Play Store for free. Chrome for Android does not support browser extensions.
Open the Add-ons page
Tap the three-dot menu in Firefox, then Add-ons and themes. Or open the ElementHider add-on page directly in Firefox on your phone.
Search and install
Search ElementHider from the Add-ons page, or tap Add to Firefox if you opened the add-on page directly. Confirm the permissions prompt, which is the same one shown on desktop.
Once installed, tap the extensions icon in Firefox's address bar and select ElementHider to open the popup. From there you can type a word or phrase and choose Hide or Blur. To configure groups, regex rules, or the point-and-click selector picker, open the full settings page from the Add-ons menu (tap ElementHider, then Preferences). It opens as a normal tab with more room than the popup, and wider tables like Groups are easiest to view in landscape.
Tip: If you're signed into the same Firefox Account with Sync turned on across your phone and desktop, keywords you've added on desktop sync to your phone automatically. You can also add rules directly on your phone.
| Feature | Desktop Firefox | Firefox for Android |
|---|---|---|
| Add/edit keywords, Hide vs. Blur | Yes | Yes |
| Point-and-click element picker | Yes (click) | Yes (tap) |
| Groups, Regex, Smart Learning | Yes | Yes (via Preferences page) |
| Supporter Pack verification | Yes | Yes (same Ko-fi email flow) |
iPhone & iPad: why it doesn't work
This comes down to an Apple App Store rule rather than Firefox or ElementHider. Apple requires every browser on iOS to use Apple's WebKit engine instead of the browser's own engine. Because Firefox for iOS runs on WebKit rather than Gecko, it does not support the WebExtensions API that ElementHider is built on. As a result, Firefox for iOS cannot run desktop or Android Firefox add-ons.
Safari has its own separate extension system, which requires packaging extensions inside a native iOS/macOS app built with Xcode and distributing them through the App Store. In addition, Safari's content-blocking rules use static declarative lists rather than scanning page changes dynamically, which does not support ElementHider's keyword muting, Blur mode, element picker, or Smart Learning.
Not just ElementHider: this limitation applies to standard Chromium and Gecko extensions across iOS.
The Bottom Line
On Android, install Firefox and add ElementHider from the Add-ons page to get the full desktop feature set on your phone. On iPhone and iPad, iOS browser restrictions prevent WebExtensions from running in any browser.