Latest Version:
1.5 Updated:
3 years ago
Ready to install?
Base64Decoder is available to install from Firefox Add-ons Store and for download from this page.
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Available versions
You can find the current and older versions of Base64Decoder 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 |
|---|---|---|---|---|
| 1.5 | XPI · ZIP · Source code | 16.69KB | 0 | 2023-09-14 |
| 1.3 | XPI · ZIP · Source code | 15.75KB | 0 | 2023-06-05 |
| 1.1 | XPI · ZIP · Source code | 15.35KB | 0 | 2023-03-09 |
| 1.0 | Paid users only | 12.81KB | 0 | 2022-11-09 |
1.5 16.69KB
1.3 15.75KB
1.1 15.35KB
1.0 12.81KB
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 Base64Decoder ZIP file.
- In Firefox browser, go to
about:addonsto open Add-ons Manager - Click on ⚙, Install Add-on From File

- Select the Base64Decoder ZIP file from step 1. Base64Decoder is now installed on your browser.
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