Download One Piece v4

Download One Piece v4 (current and past versions) for Firefox

One Piece v4 is available for download. It had 1 daily users before it was removed from Firefox Browser Add-ons on 2025-03-27, and it has been downloaded from Chrome-Stats 0 times. Be careful when installing it.

View source code

Total download count: 0 (Only count downloads from Chrome-Stats)

Available versions

You can find the current and older versions of One Piece v4 here. You can download the archived versions or inspect their source codes.

As a free user, you can only download the latest version.

Upgrade to download older versions

Version	Download	Size	Download count	Timestamp
2.0	XPI · ZIP · Source code	120.62K	0	2025-03-14

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 and unpack the One Piece v4 ZIP file to a directory of your choice.
In Chrome browser, go to chrome://extensions
Enable Developer mode.
Click on the Load Unpacked button.
Select the directory of with the unpacked One Piece v4 ZIP file from step 1. One Piece v4 is now installed on your browser.