View source code of Chrome extensions, Firefox addons or Opera extensions (crx/nex/xpi) from the Chrome web store and elsewhere.

Latest Version

Version
1.7.0
Update
December 11, 2023
Size
227KiB
Developer
Category
Users
100,000+
Rating
4.59479 ★
Manifest Version
3
Web Store Status
Languages Support
English
See more
Permissions
Tabs
Storage
ContextMenus
Downloads
DeclarativeContent
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Chrome extension source viewer Extension

View the source code of any Chrome extension in the Chrome Web store without installing it.

Features:
- Button at the Chrome Web store
- Download extension as zip file
- View source
- Configurable via context menu on button: Set one-click action via \"primary action on click\".
- View source:
- File name/type filter
- Search in the file content (literal or regexp)
- Automatic beautification (formatting) of code
- Syntax highlighting
- Show hashes (md5, sha1, sha256, sha384, sha512) of individual files
- Image preview
- View embedded zip files
- View any zip file by URL or file chooser
- View source of platform-specific extensions (such as Chrome OS-only extensions, or NaCl for a different architecture).
- Permalink to file and search result within a zip or extension file.
- Full support for incognito mode.
- Outputs public key and extension ID to the console.

Optional features (see options page):
- View source of Opera 15+ extensions, Edge extensions, Firefox addons or Thunderbird add-ons.
- \"View extension source\" contextmenu item on links to Chrome extensions
- View source of Chrome extensions outside the webstore. The View source button becomes visible when you select a CRX file for download.

Source code: https://github.com/Rob--W/crxviewer
Online demo: https://robwu.nl/crxviewer/
Contact: [email protected]

Change log:
- 1.2.3:
Add \"downloads\" permission to make sure that the \"Download\" button always works as intended.
- 1.2.4:
Add extra parameters to the CRX URL to make sure that CRX files of extensions uploaded to the Chrome Web Store after July 2014 are correctly read.
- 1.2.6: Sync options, use optionsV2, show numeric progress instead of dots, updated JSBeautifier, restore font size.
- 1.2.7: Bugfixes (viewer height, checkbox filter).
- 1.3:
Support Firefox addons (also available as a Firefox addon!)
Search within files
Customize webstore download parameters
View embedded zip files and any zip file
- 1.3.1: Use correct URL for loading extension files.
- 1.3.2: Bugfix to allow unusual extension URLs to be opened again.
- 1.4: New syntax highlighter, improved search controls, improved word wrap.
- 1.5: Calculate hashes, add link to Github project page, bugfix for case-sensitive search.
- 1.6: Improved search highlighting & also search in beautified content.
- 1.6.2: Configurable \"primary action on click\", open new tab next to current tab.
- 1.6.4: Support the new CRX3 Chrome extension file format (#62).
- 1.6.6: Permalink support, Firefox add-on finder.
- 1.6.7: Fix broken extension due to bug with storage access and NativeCrxBindings.
- 1.6.8: Support CRX3 file format from CWS; support some other AMO domains.
- 1.6.9: Add option to add the context menu item to more links (#69), open new tabs via context menu next to current tab.
- 1.6.10: Improve syntax highlighting (perf, highlighting of WebAssembly source), show sum of file sizes.
- 1.6.11: Add \"Extension ID\" row at Analysis of manifest.json, improve CRX3 public key detection, improve zip fallback detection.
- 1.6.12: Support source viewing of Edge and Thunderbird extensions, recognize CRX3 from Opera, update beautifier.
- 1.6.13: Work around Chrome bug that broke the extension button (#120).
- 1.7.0: Support new Chrome Web Store (#134), and migrate to Manifest Version 3.
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Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "name": "Chrome extension source viewer", "short_name": "CRX Viewer", "description": "View source code of Chrome extensions, Firefox addons or Opera extensions (crx/nex/xpi) from the Chrome web store and elsewhere.", "version": "1.7.0", "manifest_version": 3, "minimum_chrome_version": "88", "background": { "service_worker": "service_worker.js" }, "action": { "default_icon": { "19": "icons/19.png", "38": "icons/38.png" }, "default_title": "Inspect contents of the current browser extension", "default_popup": "popup.html" }, "icons": { "16": "icons/16.png", "48": "icons/48.png", "128": "icons/128.png" }, "options_page": "options.html", "options_ui": { "page": "options.html#optionsV2" }, "permissions": [ "tabs", "storage", "contextMenus", "downloads", "declarativeContent" ], "host_permissions": [ "*://clients2.google.com/service/update2/crx*", "*://clients2.googleusercontent.com/crx/download/*" ], "optional_host_permissions": [ "*://*/*" ], "incognito": "split"}
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How to download and manually install Chrome extension source viewer extension for Chrome

Looking for a way to install Chrome extension source viewer extensions for Chrome, you can search for them in the Chrome Web Store, clicking the "Add to Chrome" button, and following the straightforward process.

However, you may need to install Chrome extension source viewer extensions manually, this article outlines two simple methods to effortlessly install Chrome extension source viewer extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.

Method 1: Download Chrome extension source viewer extension and manually install through Drag &Drop

If you ever need to manually install a Chrome extension source viewer extension for Chrome, don't worry, it's a simple process. Just follow these easy steps, and you will have your extension ready to use in no time.

Step 1: Download the Chrome extension source viewer Extension by clicking the "Download CRX" button on the website.

Look for the Chrome extension source viewer extension you wish to install. Go to the website and download the Chrome extension source viewer extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for Chrome extension source viewer extension that contains all the data.

Step 2: Extract &Arrange Files

Once the file is downloaded, extract that file into its own folder. Similarly, give that extension files a permanent home. In other words, keep it in a folder that you don't accidentally delete it because these files will be needed to make that extension work.

Step 3: Go to the Chrome Extensions Page

Open Google Chrome and in the address bar, type chrome://extensions; it will open the Google Chrome extensions page. Make sure that "My extensions" is selected in the sidebar.

Step 4: Drag and Drop the Extension

Now, go to the folder where you extracted the Chrome extension source viewer extension and drag &drop the extension file from there anywhere onto the extension page within Google Chrome.

Step 5: Complete the Installation

Once you drag and drop the extension file, follow the steps that Google Chrome takes you through. Similarly, if the extension file is of .crx file format, you will be required to review the permissions and then add the extension.

Now, you can manage that added extension as you would like to with any other Chrome extension that you added through Chrome Webstore. Its icon will also appear in the Google Chrome Menu on the right side of the address bar once you activate it.

Method 2: Download Chrome extension source viewer extension for Chrome and install in Developer Mode

This is another method to install Chrome extension source viewer extension manually, but the twist is that here, you install by enabling the developer mode option provided in Google Chrome. This mode is commonly used for testing extensions or running unpublished tools.

Step 1: Download the Chrome extension source viewer extension file

Select and download the Chrome extension source viewer extension by clicking the 'Download CRX' button on the website.

Step 2: Extract the downloaded contents

Convert the file to a ZIP file if it is in CRX format then extract the Chrome extension source viewer extension zip file or folder that you downloaded. Make sure you extract it using the same folder name and keep it safely in another folder, so you don't delete it by mistake. The extracted folder will be needed to keep your Chrome extension source viewer extension running.

Step 3: Open Chrome Extension Setting Page

In the address bar of Google Chrome, type chrome://extensions and open the Chrome Extension Page.

Step 4: Enable Developer Mode

After opening the Chrome Extension page, look at the top right side, and you will find the toggle option of "Developer mode."Simply enable that developer mode option.

Step 5: Load the Unpacked Extension

Once you enable the developer mode option, you will see the menu of Load Unpacked, Pack Extensions and Update. From that, select the option "Load unpacked."

Step 6: Select the Extension Folder

Once the pop-up opens upon clicking Load unpacked, select the Chrome extension source viewer extension directory and click on the "Select Folder "button.

Step 7: Confirm and Install

After you select an extension folder of a Google Chrome extension you're installing manually, confirm its installation for the final time and let the installation complete.

Conclusion

Here we've made a step-by-step guide on How to manually install Chrome extension source viewer extension in 2 ways. We hope this guide proves helpful.

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User reviews

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George Kolasa (ID: 000000a081804ded) Voted 5 ★ - Updated 10/10/2023 Excellent, thank you

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Loc Quan (ID: 000000ffec1d6b17) Voted 5 ★ - Updated 10/01/2023 Works great for me

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Mickaël BELLANGER (ID: 000000d7f8eb9a9a) Voted 5 ★ - Updated 08/29/2023 A support for the new Chrome Web Store ? ( chromewebstore(dot)google(dot)com ) https://chromewebstore.google.com/detail/chrome-extension-source-v/jifpbeccnghkjeaalbbjmodiffmgedin

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Obi Wan Kenobi (ID: 00000063466025b6) Voted 5 ★ - Updated 08/19/2023 works great and lots of options

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Jorgen Creeman (ID: 0000008576dcefde) Voted 5 ★ - Updated 07/23/2023 Funktioniert sehr gut, besser als alle anderen Apps! 5 Sterne von mir!