Who is Source Code for?

Source Code is an open-source project built for web developers and technical users.

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

Is Source Code still active?

Unverified. Source Code 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 Source Code?

Similar projects tracked by PulseGate include Copy Source Code, Source Map Downloader, and Code Extractor.

Who develops Source Code?

Source Code is developed by Happy Code Time.

How long has Source Code been around?

Source Code first shipped in 2019.

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Source Code

Name: Source Code
Author: Happy Code Time

mozilla.orgBrowser DevTools & extensions

Source Code is a Firefox extension that displays selected HTML tags and website source code in a separate window. It keeps a history of viewed source, supports HTTP/HTTPS source inspection, and exports code to files.

Open SourceWebEmbeddablemacOSWindowsLinux

Visit mozilla.org

Overview

6 features

Source Code is a Browser DevTools & extensions project. It focuses on inspecting and exporting website source code without manually navigating browser developer tools. It is built as an open-source project for web developers and technical users. The project is open source (Open Source). It runs on the web, embeddable surfaces, macOS, Windows, and Linux.

Happy Code Time builds and maintains Source Code, and it first shipped in 2019. Among its 6 catalogued features are tag selection, source viewer, and source history. The interface is available in 32 languages, including Czech, German, and Greek.

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

Tag selection
Source viewer
Source history
History dashboard
File export
HTTP/HTTPS inspection

Built with & integrations

Runs on

BrowserEmbeddablemacOSWindowsLinux

Trust & compliance

License

Open Source

Verified signals

HTTPSPrivacy Policy Terms of ServiceOpen SourceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed13 Sep · 07:49 UTC
Source Code verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Source Code

What does Source Code do?: Source Code focuses on inspecting and exporting website source code without manually navigating browser developer tools. It is catalogued under Browser DevTools & extensions on PulseGate.
Who is Source Code for?: Source Code is an open-source project built for web developers and technical users.
Is Source Code free?: Yes — Source Code is open source under the Open Source license and free to use.
What platforms does Source Code run on?: Source Code runs on the web, embeddable surfaces, macOS, Windows, and Linux.
Is Source Code still active?: Unverified. Source Code 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 Source Code?: Similar projects tracked by PulseGate include Copy Source Code, Source Map Downloader, and Code Extractor.Copy Source Code Source Map Downloader Code Extractor
Who develops Source Code?: Source Code is developed by Happy Code Time.
How long has Source Code been around?: Source Code first shipped in 2019.

At a glance

Pricing: Open Source
Platforms: Web
License: Open Source
First seen: 13 Sep 2026
Built for: web developers and technical users
Model: Open source
Solves: Inspecting and exporting website source code without manually navigating browser developer tools.

Registered as

Firefox Add-ons: source-code-x

Developer

Happy Code Time

Index record

Indexed: 13 Sep 2026
Lifecycle: Alive
First seen: Sep 2026
Last seen: 13 Sep 2026

Identity audit (13)

Slug: source-code-mozilla-org
Lifecycle state recorded: 13 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 13 Sep 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
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: 13 Sep 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/source-code-x

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