JSON Hero

by JSON Hero · jsonhero.io · Developer Tools

FeaturedEstablished publisherManifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

A beautiful JSON explorer packed with features

Users

1,000

0 in 30 days

Rating

4.2 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#28K

#23K among extensions

Version

0.0.1

updated 5 Jun 2022

Users

monthly, 3 years

Latest, 15 Oct 2026: 1,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years

Latest, 15 Oct 2026: 5 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About JSON Hero

JSON Hero is an open-source, beautiful JSON explorer for the web that lets you browse, search and navigate your JSON files at speed. The JSON Hero Chrome extension allows you to quickly send JSON to view in JSON Hero. Or turn on *auto-mode and any pure JSON responses in Chrome will be transformed into a JSON Hero view. This extension will also allow you to send JSON from a Github file or a Firestore document right to JSON Hero. Just activate the extension in the toolbar whenever you are viewing a JSON GitHub file or a Firestore document in the Firestore console and they'll open in JSON Hero. * By turning on auto-mode any pure JSON responses will be automatically sent to jsonhero.io. If you are running a custom instance of JSON Hero, you can change the server URL in the extension settings.