Tool for checking HTML difference between tabs ,or between production and development environment.

Latest Version

Version
3.0.0
Update
June 24, 2024
Size
1.46MiB
Developer
Category
Users
10,000+
Rating
4.35294 ★
Manifest Version
3
Web Store Status
Languages Support
English
日本語
See more
Permissions
Tabs
Storage
ContextMenus
Scripting
See more

HTML Diff Check Tool Extension

HTML Diff Check Tool is chrome addon for checking difference between tabs or between Production and Development.

You can check HTML diff with other tab.
You can open the URL of production and development server each other with pre-register pairs of those URLs. Also, you can check HTML diff of them.

[usecase]
- To check the difference between a testing and production environment before/after deployment.

- When your co-worker asks you to check a testing environment which he/she updated.

[How to use]
1. In the settings register the combination of a testing and production environment domain (including a subdomain).

2. Turn on the \"balance scale\" icon or select from context menu at the web page where you want to check a testing or production environment.

3. Click the \"open\" button then a testing or production environment domain will be opened.

4. Click the \"diff\" button so you can check the difference between the HTML sources.

[about privacy]
- The registered domains, URLs or HTML sources are not sent to third parties.
- According to correspond to manifest v3, analyzed via Google Analytics is stopped.

[release note]
-v.3.0.0
correspond to manifest v3

-v.2.2.0
Add to context menus.

-v.2.0.0
Add function for checking diff with other tab.

-v.1.6.0
Add a comment box (Google form) Link

-v.1.5.0
Change UI design a little.

-v.1.4.0
Change Wrap Lines Function is added.
ShortCutKey is also added. Alt + Down (Go to next diff) / Alt + Up (Go to prev diff) / Alt + w (Change Wrap Lines)
Bug fix.

-v.1.3.0
Nex/Prev Diff and Search Functions are added.

-v.1.2.0
-v.1.1.0
bug fix

-v.1.0.0
Add alert when it could not access to target url.

-v.0.2.0
You can also use in incognito mode.
Fix bug and strings.

- v.0.1.11
You can also check HTML diff include JavaScript rendered HTML. Change option for that, if you need.
Read more

Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "manifest_version": 3, "version": "3.0.0", "name": "__MSG_extName__", "short_name": "__MSG_extNameShort__", "description": "__MSG_extDescription__", "default_locale": "en", "icons": { "128": "128.png", "48": "48.png", "32": "32.png" }, "background": { "service_worker": "background.js" }, "action": { "default_icon": "38.png", "default_popup": "popup.html", "default_title": "__MSG_extNameShort__" }, "content_scripts": [{ "matches": ["http://*/*", "https://*/*"], "js": ["content.js"] }], "permissions": [ "tabs","storage","contextMenus","scripting" ], "host_permissions" : [ "http://*/*", "https://*/*" ], "options_page": "options.html", "incognito": "split", "content_security_policy": { "extension_pages":"script-src 'self'; object-src 'self'" } }
Read more

How to download and manually install HTML Diff Check Tool extension for Chrome

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

Method 1: Download HTML Diff Check Tool extension and manually install through Drag &Drop

If you ever need to manually install a HTML Diff Check Tool 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 HTML Diff Check Tool Extension by clicking the "Download CRX" button on the website.

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

This is another method to install HTML Diff Check Tool 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 HTML Diff Check Tool extension file

Select and download the HTML Diff Check Tool 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 HTML Diff Check Tool 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 HTML Diff Check Tool 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 HTML Diff Check Tool 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 HTML Diff Check Tool extension in 2 ways. We hope this guide proves helpful.

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User reviews

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Igor Akkerman (ID: 000000fb50b3e055) Voted 2 ★ - Updated 02/22/2023 Appears to compare the HTML code line by line, as if you put two text editors side by side. Expectation was a smart DOM comparison. Also didn't regognize inserted lines. Downloading the HTML and comparing using any text compare tool did a far better job for me.

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Scott Silliman (ID: 0000006e6b712e30) Voted 1 ★ - Updated 02/09/2021 I couldn't this to work. all I get is an alert with chinese text in it and a checkbox asking whether to disable further alerts from this extension. when trying to open or diff. perhaps this works, but some instructions please?? totally willing to re-rate if I had instructions.

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chris clark (ID: 00000051681ba0f5) Voted 1 ★ - Updated 11/20/2019 didn't work for me, every page I attempted to use had the message "This page is not supported."

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MONO CHROME (ID: 0000000b790c5dae) Voted 5 ★ - Updated 05/05/2019 Великолепно! Работает на отлично! Удобно!

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Ch Ho (ID: 0000000fd475713d) Voted 5 ★ - Updated 09/24/2018 It does exactly what it says on the tin: it compares the html in two different tabs, or the current tab with the same page on a test server (regular expression string substitution). The differences are shown side-by-side, like Meld does. I really appreciate that it is self-contained, and doesn't send data to a server owned by the extension developer to do the processing. Wishlist: reloading the same page and alerting when the contents change, and being able to ignore certain strings (like security tokens that change on every reload).