Check all image and SVG elements are accessible.

Latest Version

Version
Final Build
Update
October 29, 2023
Size
77.84KiB
Developer
Category
Users
2,000+
Rating
4 ★
Manifest Version
3
Web Store Status
Languages Support
English (UK)
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Permissions
Storage
ActiveTab
Scripting
WebNavigation
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Image ALT Extension

# A11y Image check
Simple extension for basic accessibility testing images.

## Images ()

### Background Image (CSS)

+ Identifies all the images inserted in the webpage using either inline styles or CSS. If an element contains a background image, a message about the method of image insertion is generated.

### Alternative Text

* Finds all image elements in the document and checks if they have an ALT text present. If ALT text is found, a message is created displaying the ALT text.

### Decorative Images

* Identifies decorative images on the webpage. Images are classified as decorative based on various attributes (aria-hidden, and alt). Each classification creates a message explaining why the image is classified as decorative.

### Missing ALT Attributes

* Identifies images that are missing an ALT attribute. It looks for all the img elements in the document and checks if they have the alt attribute. If not, a message is generated indicating that the image is missing an ALT attribute.

## SVG

### SVG Accessible Name

* Checks all SVG elements in the document for the presence of accessible names. It categorizes SVGs based on certain criteria such as, the svg has a role of 'img' but is missing an accessible name, if it is following best practices for a meaningful SVG, and if it is missing 'aria-hidden' or 'role img', or an accessible name. For each case, a message is generated explaining the status of the SVG.

### Decorative SVG
* Checks all SVG elements in a document to identify which ones are decorative. Decorative SVGs are marked with 'aria-hidden true'. If the SVG has an accessible name, a message will be created that shows it's marked as decorative but has an accessible name.
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Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "name": "Image ALT", "short_name": "A11y Image Checks", "version": "2023.10.29", "version_name": "Final Build", "manifest_version": 3, "description": "Check all image and SVG elements are accessible.", "author": "Laurence Lewis (@LaurenceRLewis)", "minimum_chrome_version": "92", "icons": { "16": "extension/icons/ia-icon-16.png", "48": "extension/icons/ia-icon-48.png", "64": "extension/icons/ia-icon-64.png", "128": "extension/icons/ia-icon-128.png" }, "action": { "default_popup": "extension/ui/popup.html", "default_icon": { "16": "extension/icons/ia-icon-16.png", "48": "extension/icons/ia-icon-48.png" }, "default_title": "Image ALT" }, "permissions": [ "storage", "activeTab", "scripting", "webNavigation" ], "host_permissions": [ "" ], "background": { "service_worker": "extension/service-worker.js" }}
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How to download and manually install Image ALT extension for Chrome

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

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

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

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

This is another method to install Image ALT 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 Image ALT extension file

Select and download the Image ALT 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 Image ALT 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 Image ALT 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 Image ALT 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 Image ALT extension in 2 ways. We hope this guide proves helpful.

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User reviews

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Neil Carding (ID: 00000005ce1773fd) Voted 4 ★ - Updated 06/10/2021 I've tried all the ALT text viewing extensions I can find on the Chrome Web Store and this is my favourite. It's not perfect, I have to refresh my browser in order to remove the overlays and the overlays are a bit larger than necessary, but fine for checking emails, which is what I want it for.