What does JSON Viewer Pro do?

JSON Viewer Pro focuses on viewing raw JSON in a readable, structured format inside Firefox. It is catalogued under Browser DevTools & extensions on PulseGate.

Who should use JSON Viewer Pro?

JSON Viewer Pro is a consumer product built for firefox users and web developers.

Does JSON Viewer Pro have a free plan?

Yes — JSON Viewer Pro is free to use.

What platforms does JSON Viewer Pro run on?

JSON Viewer Pro runs on the web, embeddable surfaces, macOS, Windows, and Linux.

Is JSON Viewer Pro still active?

Unverified. JSON Viewer Pro has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What are alternatives to JSON Viewer Pro?

Similar projects tracked by PulseGate include JSON Viewer, JSON Viewer Pro, and HAR/JSON viewer.

Who develops JSON Viewer Pro?

JSON Viewer Pro is developed by bIONArAq.

How long has JSON Viewer Pro been around?

JSON Viewer Pro first shipped in 2024.

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JSON Viewer Pro

Name: JSON Viewer Pro
Author: bIONArAq

mozilla.orgBrowser DevTools & extensions

JSON Viewer Pro is a Firefox browser extension that formats and visualizes JSON data for easier inspection. It is intended for web developers and other Firefox users who need to read JSON responses in the browser.

FreeWebEmbeddablemacOSWindowsLinux

Visit mozilla.org

1alternative

4features

2024since

Overview

4 features

JSON Viewer Pro is a Browser DevTools & extensions project. It focuses on viewing raw JSON in a readable, structured format inside Firefox. It is built as a consumer product for firefox users and web developers. It is available for free. It runs on the web, embeddable surfaces, macOS, Windows, and Linux.

It is developed by bIONArAq, and it first shipped in 2024. Among its 4 catalogued features are JSON visualization, browser integration, and JSON formatting. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

JSON visualization
Browser integration
JSON formatting
Website access

Built with & integrations

Runs on

BrowserEmbeddablemacOSWindowsLinux

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed9 Sept · 02:20 UTC
JSON Viewer Pro verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about JSON Viewer Pro

What does JSON Viewer Pro do?: JSON Viewer Pro focuses on viewing raw JSON in a readable, structured format inside Firefox. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use JSON Viewer Pro?: JSON Viewer Pro is a consumer product built for firefox users and web developers.
Does JSON Viewer Pro have a free plan?: Yes — JSON Viewer Pro is free to use.
What platforms does JSON Viewer Pro run on?: JSON Viewer Pro runs on the web, embeddable surfaces, macOS, Windows, and Linux.
Is JSON Viewer Pro still active?: Unverified. JSON Viewer Pro has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What are alternatives to JSON Viewer Pro?: Similar projects tracked by PulseGate include JSON Viewer, JSON Viewer Pro, and HAR/JSON viewer.JSON Viewer JSON Viewer Pro HAR/JSON viewer
Who develops JSON Viewer Pro?: JSON Viewer Pro is developed by bIONArAq.
How long has JSON Viewer Pro been around?: JSON Viewer Pro first shipped in 2024.

At a glance

Pricing: Free
Platforms: Web
Built for: Firefox users and web developers
Model: B2C
Solves: Viewing raw JSON in a readable, structured format inside Firefox.

Registered as

Firefox Add-ons: json-viewer-pro

Developer

bIONArAq

Index record

Indexed: 9 Sept 2026
Lifecycle: Alive
Last seen: 9 Sept 2026

Identity audit (13)

Slug: json-viewer-pro-mozilla-org
Lifecycle state recorded: 9 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 9 Sept 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 9 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/json-viewer-pro

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