Block HTML Smuggling attacks and other unwanted downloads. Designed with enterprise configuration in mind.

Latest Version

Version
1.1.0
Update
February 18, 2024
Size
26.59KiB
Developer
Category
Users
10,000+
Rating
4.5 ★
Manifest Version
3
Web Store Status
Languages Support
English
Français
See more
Permissions
Downloads
Notifications
Tabs
Storage
Scripting
NativeMessaging
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Download Blocker Extension

Block HTML Smuggling attacks and other unwanted downloads. Designed with enterprise configuration in mind.

See https://github.com/SecurityJosh/DownloadBlocker for more information and configuration instructions.
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Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "name": "Download Blocker", "storage" : { "managed_schema" : "schema.json" }, "version": "1.1.0", "manifest_version": 3, "description": "Block HTML Smuggling attacks and other unwanted downloads. Designed with enterprise configuration in mind.", "homepage_url": "https://github.com/SecurityJosh/DownloadBlocker", "icons": { "16": "icons/icon16.png", "48": "icons/icon48.png", "128": "icons/icon128.png", "192": "icons/icon192.png" }, "default_locale": "en", "background": { "service_worker": "worker_wrapper.js" }, "permissions": [ "downloads", "notifications", "tabs", "storage", "scripting", "nativeMessaging" ], "content_scripts": [ { "matches": ["file://*/*", "http://*/*", "https://*/*"], "js": ["src/contentscript.js"], "run_at":"document_start", "allFrames" : true, "match_origin_as_fallback": true }], "host_permissions" : [ "file://*/*", "http://*/*", "https://*/*" ], "minimum_chrome_version": "102"}
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How to download and manually install Download Blocker extension for Chrome

Looking for a way to install Download Blocker 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 Download Blocker extensions manually, this article outlines two simple methods to effortlessly install Download Blocker extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.

Method 1: Download Download Blocker extension and manually install through Drag &Drop

If you ever need to manually install a Download Blocker 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 Download Blocker Extension by clicking the "Download CRX" button on the website.

Look for the Download Blocker extension you wish to install. Go to the website and download the Download Blocker extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for Download Blocker 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 Download Blocker 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 Download Blocker extension for Chrome and install in Developer Mode

This is another method to install Download Blocker 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 Download Blocker extension file

Select and download the Download Blocker 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 Download Blocker 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 Download Blocker 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 Download Blocker 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 Download Blocker extension in 2 ways. We hope this guide proves helpful.

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User reviews

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Le Misio (ID: 00000083bc1fcbb9) Voted 5 ★ - Updated 05/31/2023 Many thanks!!! I was looking for any way to block the download of .apk files on my PC and it's working perfectly! {"rules":{"bannedExtensions":"apk","origin":"any"}}

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Yash Jaiswal (ID: 000000e51ee19dcc) Voted 3 ★ - Updated 05/25/2022 hi i wanted to ask does this blocks .swf type of malicious downloads ??

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Maxi Cardozo (ID: 00000062f238a8d2) Voted 5 ★ - Updated 08/22/2021 For configuring which file extensions you would like to block, create the keys if you don't have them in "Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Chrome\3rdparty\extensions\kippogcnigegkjidkpfpaeimabcoboak\policy" and use a String named "Config" to tweak its JSON configuration settings. It worked very well for me. I would suggest making an additional filter that would block any file (regardless of extension) containing a pattern (like every single file with the name *chrome* somewhere in its name) Otherwise excellent job.