Who should use CSSViewer?

CSSViewer is an open-source project built for web developers and frontend designers.

Yes — CSSViewer is open source under the Open Source license and free to use.

What platforms does CSSViewer run on?

CSSViewer runs on the web and embeddable surfaces.

Is CSSViewer still maintained?

Unverified. CSSViewer 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 CSSViewer?

Similar projects tracked by PulseGate include HTML & CSS Extractor, CSS SCANNER, and HTML/CSS Extractor.

Who develops CSSViewer?

CSSViewer is developed by Mohsen Khanpour.

How long has CSSViewer been around?

CSSViewer first shipped in 2018.

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CSSViewer

Name: CSSViewer
Author: Mohsen Khanpour

github.comInfrastructure

CSSViewer is an open-source Firefox WebExtension that displays CSS data for elements on a webpage. It helps frontend developers and designers inspect styles directly while browsing.

Open SourceWebEmbeddable

Visit github.com

Overview

4 features

CSSViewer is a Browser DevTools & extensions project. It focuses on inspecting and extracting CSS properties from webpage elements without manually searching page source or developer tools. CSSViewer is an open-source project aimed at web developers and frontend designers. CSSViewer is open source under the Open Source license. CSSViewer is available on the web and embeddable surfaces.

It is developed by Mohsen Khanpour, and it first shipped in 2018. Key capabilities include element inspection, CSS property extraction, and firefox integration.

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

Element inspection
CSS property extraction
Firefox integration
Webpage style viewing

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

License

Open Source

Verified signals

HTTPSPrivacy Policy Terms of ServiceOpen SourceFree tierStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed8 Sep · 09:40 UTC
CSSViewer verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about CSSViewer

What is CSSViewer?: CSSViewer focuses on inspecting and extracting CSS properties from webpage elements without manually searching page source or developer tools. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use CSSViewer?: CSSViewer is an open-source project built for web developers and frontend designers.
Is CSSViewer free?: Yes — CSSViewer is open source under the Open Source license and free to use.
What platforms does CSSViewer run on?: CSSViewer runs on the web and embeddable surfaces.
Is CSSViewer still maintained?: Unverified. CSSViewer 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 CSSViewer?: Similar projects tracked by PulseGate include HTML & CSS Extractor, CSS SCANNER, and HTML/CSS Extractor.HTML & CSS Extractor CSS SCANNER HTML/CSS Extractor
Who develops CSSViewer?: CSSViewer is developed by Mohsen Khanpour.
How long has CSSViewer been around?: CSSViewer first shipped in 2018.

At a glance

Pricing: Open Source
Platforms: Web
Languages: English
License: Open Source
First seen: 8 Sep 2026
Built for: web developers and frontend designers
Model: Open source
Solves: Inspecting and extracting CSS properties from webpage elements without manually searching page source or developer tools.

Registered as

Firefox Add-ons: cssviewer-quantum

Developer

Mohsen Khanpour

Index record

Indexed: 8 Sep 2026
Lifecycle: Alive
First seen: Sep 2026
Last seen: 8 Sep 2026

Identity audit (13)

Slug: cssviewer-github-com
Lifecycle state recorded: 8 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 8 Sep 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Written by a language model from the project's public pages.
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: 8 Sep 2026
Canonical URL: https://github.com/mohsenkhanpour/CSSViewer

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