What is JS Beautifier?

JS Beautifier focuses on formatting and improving the readability of JavaScript code in the browser. It is catalogued under Browser DevTools & extensions on PulseGate.

Who should use JS Beautifier?

JS Beautifier is a consumer product built for firefox users and web developers.

Does JS Beautifier have a free plan?

Yes — JS Beautifier is free to use.

What platforms does JS Beautifier run on?

JS Beautifier runs on the web and embeddable surfaces.

Is JS Beautifier still active?

Unverified. JS Beautifier 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 JS Beautifier?

Similar projects tracked by PulseGate include JS Beautify,CSS,HTML, JS Beautifier settings tweaks, and Beautifer & Minify.

Who develops JS Beautifier?

JS Beautifier is developed by y666999.

How long has JS Beautifier been around?

JS Beautifier first shipped in 2025.

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JS Beautifier

Name: JS Beautifier
Author: y666999

mozilla.orgBrowser DevTools & extensions

JS Beautifier is a Firefox browser extension that formats and beautifies JavaScript code. It is intended for Firefox users and web developers who need to make browser-based JavaScript easier to read.

FreeWebEmbeddableCloud-managed

Visit mozilla.org

1alternative

5features

2025since

Overview

5 features

JS Beautifier is a Browser DevTools & extensions project. It focuses on formatting and improving the readability of JavaScript code in the browser. It is built as a consumer product for firefox users and web developers. JS Beautifier costs nothing to use. It runs on the web and embeddable surfaces.

It is developed by y666999, and it first shipped in 2025. Key capabilities include javaScript formatting, browser extension, and website access. The interface is available in 32 languages, including Czech, German, and Greek.

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

JavaScript formatting
Browser extension
Website access
Firefox integration
Permission controls

Built with & integrations

Runs on

BrowserEmbeddableCloud-managed

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed19 Sep · 09:10 UTC
JS Beautifier verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about JS Beautifier

What is JS Beautifier?: JS Beautifier focuses on formatting and improving the readability of JavaScript code in the browser. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use JS Beautifier?: JS Beautifier is a consumer product built for firefox users and web developers.
Does JS Beautifier have a free plan?: Yes — JS Beautifier is free to use.
What platforms does JS Beautifier run on?: JS Beautifier runs on the web and embeddable surfaces.
Is JS Beautifier still active?: Unverified. JS Beautifier 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 JS Beautifier?: Similar projects tracked by PulseGate include JS Beautify,CSS,HTML, JS Beautifier settings tweaks, and Beautifer & Minify.JS Beautify,CSS,HTML JS Beautifier settings tweaks Beautifer & Minify
Who develops JS Beautifier?: JS Beautifier is developed by y666999.
How long has JS Beautifier been around?: JS Beautifier first shipped in 2025.

At a glance

Pricing: Free
Platforms: Web
Built for: Firefox users and web developers
Model: B2C
Solves: Formatting and improving the readability of JavaScript code in the browser.

Registered as

Firefox Add-ons: new-js-beautifier

Developer

y666999

Index record

Indexed: 19 Sep 2026
Lifecycle: Alive
Last seen: 19 Sep 2026

Identity audit (13)

Slug: js-beautifier-mozilla-org
Lifecycle state recorded: 19 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 19 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: 19 Sep 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/new-js-beautifier

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