Softwr
JSON Viewer logo

JSON Viewer

View JSON documents in the browser

As of 13 November 2026, JSON Viewer is free to use. JSON Viewer is a browser extension that formats and highlights JSON content in the browser. Softwr lists it under Browser Extensions. JSON Viewer is launched in 2015, available on Browser extension.

Overview

What JSON Viewer does

JSON Viewer is a browser extension that formats and highlights JSON content in the browser. It makes JSON data easy to read with syntax highlighting, collapsible nodes, and a tree view of the data structure.

The honest half

Where it falls short

Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about JSON Viewer.

  • The project is MIT licensed open source code hosted on GitHub with no vendor and no paid tier

Pricing

What JSON Viewer costs

Taken from the vendor's own pricing page. Prices move, so check before you buy.

Free

Free

  • Syntax highlighting
  • Collapsible tree
  • Search
  • Copy to clipboard

Capabilities

Features

  • JSON formatting

  • Syntax highlighting

  • Tree view

  • Search functionality

  • Chrome support

    Available on chrome

  • Firefox support

    Available on firefox

  • Edge support

    Available on edge

Behind it

Who makes JSON Viewer

Company
JSON Viewer
Based in
Open Source Project
Share

Keep looking

Where to go from JSON Viewer

Best Browser Extensions software for

Compare JSON Viewer with

Other Browser Extensions software

  • Identify web technologies

    Free, then $250/mo10 researched notes
  • See what websites are built with

    Free, then $295/mo9 researched notes
  • Browser DevTools extension for debugging Vue.js

    Free plan6 researched notes
  • Web developer toolbar for browsers

    Free plan1 researched note
  • Debug Redux state changes in your browser

    Free plan11 researched notes
  • Save articles and videos for later

    Free, then $4.99/mo14 researched notes
  • Identify fonts on web pages

    Free plan8 researched notes
  • Dark mode for every website

    Free plan8 researched notes
  • Free, open-source ad content blocker

    Free plan10 researched notes
  • Make your writing bold and clear

    Free, then $8.33/mo10 researched notes
  • Save anything for reading later

    Free plan9 researched notes
  • Website traffic and competitive analysis

    Free plan7 researched notes
  • Open source userscript manager

    Free plan10 researched notes
  • Block ads and stop trackers

    Free plan8 researched notes

Softwr does not host reviews and shows no star rating for JSON Viewer, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.

More on JSON Viewer

Best Browser Extensions software alternatives

Open-source userscript manager for Safari on Mac and iOS

open-source

Safari userscript manager that runs Tampermonkey scripts

one-time

The original userscript manager, for Firefox

open-source

User scripts and user styles in one Firefox extension

open-source

Chromium-based browser organized around user workflows

Free

Full webpage screenshots

freemium

Advanced color picker and eyedropper

free

Compare JSON Viewer with alternatives