Download FastFill

Name: FastFill
Author: Anson Yu

By: Anson Yu Add-on

Download FastFill (current and past versions) for Firefox

Latest Version: 1.0.3 Updated: 3 months ago

Ready to install?

FastFill is available to install from Firefox Add-ons Store and for download from this page.

View source code

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Total downloads

Available versions

You can find the current and older versions of FastFill 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	Timestamp
1.0.3	XPI · ZIP · Source code	16.86KB	2026-04-15
1.0.2	XPI · ZIP · Source code	15.85KB	2026-04-14
1.0.0	XPI · ZIP · Source code	15.15KB	2026-04-10

2026-04-15 · 0 downloads

XPI ZIP Source code

2026-04-14 · 0 downloads

XPI ZIP Source code

2026-04-10 · 0 downloads

XPI ZIP Source code

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 FastFill ZIP file.
In Firefox browser, go to about:addons to open Add-ons Manager
Click on ⚙, Install Add-on From File
Select the FastFill ZIP file from step 1. FastFill is now installed on your browser.