Increases accessibility of math in Wikipedia pages by reverse engineering inline representations

Latest Version

Version
0.5
Update
May 30, 2022
Size
66.62KiB
Developer
Category
Users
26
Rating
1 ★
Manifest Version
3
Web Store Status
Languages Support
English
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Permissions
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accessible-wikipedia-math Extension

Wikipedia makes display math accessible by hiding MathML next to the image it produces. Assistive Technology (AT) can then convert the MathML to speech or braille. This extension extends that trick to inline math by converting the \"HTML math\" (use of , , and tags) in the text of the page into MathML and inserting hidden MathML back into the document. The original output is hidden from AT by marking it with aria-hidden=\"true\". Thus, the sighted user sees the original expression and the AT only sees the MathML.

The amount of HTML math varies with the page and the language. In most English pages, this extension makes a significant improvement because 25% - 75% of the math is HTML math; only a few HTML math examples are missed. French pages have fewer instances of HTML math, but this extension still makes a significant improvement. Most German, Asian, and Arabic pages appear to use very little HTML math and so the extension probably won't help for those languages because they are already accessible. If in doubt, try it out.

This extension helps for displayed math also (mainly English pages) in a different way. Many Wikipedia pages place larger math expressions on their own line inside of a list tag, probably for presentation reasons. However, this causes screen readers to say \"list with one item\" ... \"out of list\" for each piece of display math. This extension adds role=\"presentation\" so that AT does not see the math as being a list and just reads the math. The display of the math is unaffected.

The extension is only active on wikipedia.org pages. It should work with any AT that reads math in MathML. This includes JAWS, NVDA, VoiceOver, and Orca.

No user data is collected by this extension.
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Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "manifest_version": 3, "name": "accessible-wikipedia-math", "version": "0.5", "description": "Increases accessibility of math in Wikipedia pages by reverse engineering inline representations", "homepage_url": "https://github.com/rsoiffer/Accessible-Wikipedia-Math", "content_scripts": [{ "matches": ["*://*.wikipedia.org/*"], "js": ["xregexp-all.js", "content-script.js"] }]}
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How to download and manually install accessible-wikipedia-math extension for Chrome

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

Method 1: Download accessible-wikipedia-math extension and manually install through Drag &Drop

If you ever need to manually install a accessible-wikipedia-math 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 accessible-wikipedia-math Extension by clicking the "Download CRX" button on the website.

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

This is another method to install accessible-wikipedia-math 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 accessible-wikipedia-math extension file

Select and download the accessible-wikipedia-math 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 accessible-wikipedia-math 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 accessible-wikipedia-math 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 accessible-wikipedia-math 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 accessible-wikipedia-math extension in 2 ways. We hope this guide proves helpful.

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