Latest Version:
1.3.1 Updated:
a year ago
Ready to install?
Site Blocker is available to install from Firefox Add-ons Store and for download from this page.
31
Daily users
No ratings yet
0
Total downloads
Available versions
You can find the current and older versions of Site Blocker here. You can download the archived versions or inspect their source codes.
As a free user, you can download up to 3 latest versions.
Upgrade to download older versions
| Version | Download | Size | Download count | Timestamp |
|---|---|---|---|---|
| 1.3.1 | XPI · ZIP · Source code | 56.78KB | 0 | 2025-07-30 |
| 1.3.0 | XPI · ZIP · Source code | 54.68KB | 0 | 2025-07-02 |
| 1.2.0 | XPI · ZIP · Source code | 51.69KB | 0 | 2025-06-30 |
| 1.1 | Paid users only | 42.59KB | 0 | 2025-06-28 |
1.3.1 56.78KB
1.3.0 54.68KB
1.2.0 51.69KB
1.1 42.59KB
Paid users only
Install XPI file
An XPI file, short for "XPInstall," is a compressed file format used primarily by Mozilla applications, like Firefox and Thunderbird, to distribute and install add-ons or extensions. These files are similar in function to CRX files for Chrome but cater to the Mozilla ecosystem.
- Simply drag-and-drop the XPI into Firefox to install the add-on.
Install ZIP file
- Download the Site Blocker ZIP file.
- In Firefox browser, go to
about:addonsto open Add-ons Manager - Click on ⚙, Install Add-on From File

- Select the Site Blocker ZIP file from step 1. Site Blocker is now installed on your browser.
Best Site Blocker Alternatives
Here are some Firefox add-ons that are similar to Site Blocker: