What does JSON Formatter + Viewer do?

JSON Formatter + Viewer focuses on reading compact, unformatted JSON data displayed on web pages. It is catalogued under Browser DevTools & extensions on PulseGate.

Who is JSON Formatter + Viewer for?

JSON Formatter + Viewer is a consumer product built for firefox users and developers who inspect JSON data.

Is JSON Formatter + Viewer free?

Yes — JSON Formatter + Viewer is free to use.

What platforms does JSON Formatter + Viewer run on?

JSON Formatter + Viewer runs on the web and embeddable surfaces.

Is JSON Formatter + Viewer still active?

Unverified. JSON Formatter + Viewer 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 projects are similar to JSON Formatter + Viewer?

Similar projects tracked by PulseGate include JSON Formatter, JSON Viewer, and JSON Viewer Pro By PatilWeb.

Who makes JSON Formatter + Viewer?

JSON Formatter + Viewer is developed by razaul.

How long has JSON Formatter + Viewer been around?

JSON Formatter + Viewer first shipped in 2023.

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JSON Formatter + Viewer

Name: JSON Formatter + Viewer
Author: razaul

mozilla.orgBrowser DevTools & extensions

JSON Formatter + Viewer is a Firefox extension that detects JSON content on web pages and displays it with indentation and formatting. It adds a toolbar badge when formatting succeeds and is intended for users who need to inspect JSON more easily.

FreeWebEmbeddable

Visit mozilla.org

2alternatives

5features

2023since

Overview

5 features

JSON Formatter + Viewer is a Browser DevTools & extensions project. It focuses on reading compact, unformatted JSON data displayed on web pages. It is built as a consumer product for firefox users and developers who inspect JSON data. JSON Formatter + Viewer costs nothing to use. It runs on the web and embeddable surfaces.

Behind JSON Formatter + Viewer is razaul, and it first shipped in 2023. Key capabilities include JSON Formatting, Indented Display, and JSON Detection. 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 Formatting
Indented Display
JSON Detection
Toolbar Badge
In-page Viewer

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed15 Sep · 02:35 UTC
JSON Formatter + Viewer verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about JSON Formatter + Viewer

What does JSON Formatter + Viewer do?: JSON Formatter + Viewer focuses on reading compact, unformatted JSON data displayed on web pages. It is catalogued under Browser DevTools & extensions on PulseGate.
Who is JSON Formatter + Viewer for?: JSON Formatter + Viewer is a consumer product built for firefox users and developers who inspect JSON data.
Is JSON Formatter + Viewer free?: Yes — JSON Formatter + Viewer is free to use.
What platforms does JSON Formatter + Viewer run on?: JSON Formatter + Viewer runs on the web and embeddable surfaces.
Is JSON Formatter + Viewer still active?: Unverified. JSON Formatter + Viewer 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 projects are similar to JSON Formatter + Viewer?: Similar projects tracked by PulseGate include JSON Formatter, JSON Viewer, and JSON Viewer Pro By PatilWeb.JSON Formatter JSON Viewer JSON Viewer Pro By PatilWeb
Who makes JSON Formatter + Viewer?: JSON Formatter + Viewer is developed by razaul.
How long has JSON Formatter + Viewer been around?: JSON Formatter + Viewer first shipped in 2023.

At a glance

Pricing: Free
Platforms: Web
Built for: Firefox users and developers who inspect JSON data
Model: B2C
Solves: Reading compact, unformatted JSON data displayed on web pages.

Registered as

Firefox Add-ons: json-formatter-viewer

Developer

razaul

Index record

Indexed: 15 Sep 2026
Lifecycle: Alive
Last seen: 15 Sep 2026

Identity audit (13)

Slug: json-formatter-viewer-mozilla-org
Lifecycle state recorded: 15 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 15 Sep 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: 15 Sep 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/json-formatter-viewer

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