Download JSON Formatter

Name: JSON Formatter
Author: Arnav Kumar

By: Arnav Kumar

Download JSON Formatter (current and past versions) for Firefox

Latest Version: 2.1.18 Updated: 4 months ago

Ready to install?

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

View source code

3,357

Daily users

5.0

5 ratings

Total downloads

Available versions

You can find the current and older versions of JSON Formatter 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
2.1.18	XPI · ZIP · Source code	111.51KB	2026-03-11
2.1.16	XPI · ZIP · Source code	358.62KB	2026-03-04
2.1.15	XPI · ZIP · Source code	182.73KB	2026-02-25
2.0.3.0	Paid users only	166.15KB	2023-03-27

2026-03-11 · 0 downloads

XPI ZIP Source code

2026-03-04 · 0 downloads

XPI ZIP Source code

2026-02-25 · 0 downloads

XPI ZIP Source code

2023-03-27 · 0 downloads

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