I tried using the 'Popup ALT Attributes' add-on that displays alternative attributes included in images in Firefox – Livedoor News

I tried using the 'Popup ALT Attributes' add-on which displays alternative attributes included in images in Firefox.

If your web browser can't display an image, an alternative text called an “alt attribute” may be displayed instead of the image. Basically, alt attributes embedded in images can only be viewed if you view the source code, but if you use the Firefox extension “Popup ALT Attributes” created by engineer Piro, you can open the source code of the page. It is possible to check the alt attribute from the image without having to do this.

Popup ALT Themes – Download this extension for 🦊 Firefox (en)

https://addons.mozilla.org/ja/firefox/addon/popup-alt-attribute/

XUL Apps > Popup ALT Attributes – React External

https://piro.sakura.ne.jp/xul/_popupalt.html

To install Popup ALT Attributes on Firefox, first access the distribution page and click Add to Firefox.

When the following pop-up window appears, click Add.

Then click OK to complete the installation.

Now, when you hover over an image that includes an alt attribute, the alt attribute will automatically appear.

The “Popup ALT Attributes” also have the functionality to wrap and display long tooltips.

Furthermore, if you add the following command as a hidden function to user.js or about:config, all the attributes shown in the list will be displayed in a popup window. Additionally, even if the element you hover over does not have that attribute, if there are any ancestor elements that have that attribute, you can display them as well.

user_pref(“browser.chrome.tooltips.attrlist.enabled”, true);
user_pref(“browser.chrome.tooltips.attrlist”,
“alt|src|data|title|href|cite|action|onclick|onmouseover|onsubmit”);

Also, with the following settings, it is possible to display attribute values ​​for all ancestor elements. “Using these features may help prevent phishing,” says Pero.

user_pref(“browser.chrome.tooltips.attrlist.recursively”, true);

Additionally, Popup ALT Themes is developed as open source, and the source code can be viewed and reused from GitHub.

GitHub – piroor/popupalt: Popup ALT attribute, popup alt texts for images or other like NetscapeCommunicator(Navigator) 4.x, show long descriptions in multi-row toolbar.

https://github.com/piroor/popupalt