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A spinnaker is a special type of sail that is flown in front of the main sails. It’s packed away when not in use, but when the wind is right, it can be unfurled to provide a powerful boost. This plugin is named Spinnaker because it allows you to keep your images and PDFs neatly tucked away, ready to be “unfurled” into a beautiful, accessible lightbox when your users need them.
Spinnaker is a lightweight, modern, and highly accessible plugin that turns any image or PDF link into a fully-featured dialog lightbox. It’s built with accessibility as a priority, ensuring a seamless experience for users with keyboards and screen readers.
Image Lightbox Features:
<ul>
<li>Converts any <code><img></code> tag into a clickable lightbox trigger.</li>
<li>Displays a large, scrollable version of your image that fills the viewport without forcing double-scrollbars.</li>
<li>Adds scroll-arrow buttons for easy navigation of oversized images.</li>
<li>Supports custom initial image positioning (e.g., center, top, bottom, left, right).</li>
<li>Displays image credits as a “placard,” with support for links.</li>
<li>Provides a “Download” button for the full-size image.</li>
<li>Fully localizable UI text in Spanish, Russian, Vietnamese, Simplified Chinese, Arabic, Korean, and Somali.</li>
</ul>
PDF Lightbox Features:
<ul>
<li>Converts any <code><a></code> tag pointing to a PDF into a lightbox trigger.</li>
<li>Displays the PDF in an embedded viewer right on your site.</li>
<li>Includes a “Download” button.</li>
<li>Supports page builder modules (like DIVI) where you can only add a class to the container.</li>
<li>Tracks PDF views and downloads, with stats available in the WordPress admin.</li>
<li>Fully localizable UI text in Spanish, Russian, Vietnamese, Simplified Chinese, Arabic, Korean, and Somali.</li>
</ul>
<h3>Usage</h3>
<h3>Image Lightbox</h3>
To make an image open in a lightbox, add the class <code>image-lightbox-trigger</code> to the <code><img></code> tag itself.
For Gutenberg Block Editor: 
Gutenberg wraps images in a <code><figure></code> element. Add the class <code>image-lightbox-trigger-container</code> to the figure wrapper: Select the image block, open the “Advanced” panel in the block settings, and add <code>image-lightbox-trigger-container</code> to the “Additional CSS class(es)” field. For screen reader descriptions, you can use the image’s “Title” field (available in the image block settings). For advanced features like credits and positioning, switch to HTML editing mode.
For Page Builders (like DIVI): 
If you can only add a class to the container/module holding the image, add the class <code>image-lightbox-trigger-container</code> to the container. The plugin will find the first image inside it and turn it into a lightbox.
Optional Attributes (add to the <code><img></code> tag):
<ul>
<li><code>data-description="…"</code>: A longer description for screen readers. Note: Users of Gutenberg and other page builders that don’t allow custom attributes to be added can use the image’s “Title” field. The plugin will automatically use the title text for the screen reader description and remove the title attribute from the image to prevent duplicate announcements.</li>
<li><code>data-credit="…"</code>: The text for the credit placard. Requires HTML editing mode in Gutenberg.</li>
<li><code>data-credit-link="…"</code>: A URL to make the entire credit placard a link. Requires HTML editing mode in Gutenberg.</li>
<li><code>data-position="…"</code>: Set the initial scroll position. Options: <code>top</code>, <code>bottom</code>, <code>left</code>, <code>right</code>, or <code>center</code> (default). Requires HTML editing mode in Gutenberg.</li>
</ul>
Localization: 
To translate the UI text, add a language-specific class like <code>-es</code> (for Spanish) to the trigger class (e.g., <code>image-lightbox-trigger-es</code>).
<ul>
<li>Supported languages: Spanish (<code>-es</code>), Russian (<code>-ru</code>), Vietnamese (<code>-vi</code>), Simplified Chinese (<code>-zh</code>), Arabic (<code>-ar</code>), Korean (<code>-ko</code>), and Somali (<code>-so</code>).</li>
</ul>
Example HTML:
<pre><code><img class="image-lightbox-trigger-es" src="…" alt="…" 
 data-description="Una descripción detallada de la imagen." 
 data-credit="Foto por Jane Doe" 
 data-credit-link="[https://example.com](https://example.com)"
 data-position="right">
</code></pre>
<h3>PDF Lightbox</h3>
To make a link to a PDF open in a lightbox, add the class <code>pdf-lightbox-trigger</code> to the <code><a></code> tag itself.
For Page Builders (like DIVI): 
If you can only add a class to the container/module holding the link, add the class <code>pdf-lightbox-trigger-container</code> to the container. The plugin will find the correct PDF link inside it.
Localization: 
To translate the UI text, add a language-specific class like <code>-es</code> (for Spanish) to the trigger class (e.g., <code>pdf-lightbox-trigger-es</code>).
<ul>
<li>Supported languages: Spanish (<code>-es</code>), Russian (<code>-ru</code>), Vietnamese (<code>-vi</code>), Simplified Chinese (<code>-zh</code>), Arabic (<code>-ar</code>), Korean (<code>-ko</code>), and Somali (<code>-so</code>).</li>
</ul>
Example HTML:
<pre><code><a href="/path/to/file.pdf" class="pdf-lightbox-trigger-es">Directorio</a>
</code></pre>

Spinnaker Dialog Lightboxes

Accessible lightboxes for images and PDFs using the HTML dialog element. Add classes to create instant lightboxes!

On The Map Marketing

Accessibly app is a WordPress accessibility plugin that will help your website become accessible to even more of your site visitors.
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Accessibly app is known as the best Accessibility Plugin for Shopify stores. With more than 4000+ active websites, now we are providing the best accessibility for your WordPress site too.
Accessibly Plugin was developed keeping the best web accessibility practices and accessibility standards in mind and a mission to provide everyone with equal access to your website. We have based our WordPress plugin on the official W3 practices and guidelines to help your website become ADA/WCAG compliant. And not only that — our app has been reviewed by the visually impaired community to improve our WordPress plugin. Increase your site’s accessibility and tackle your accessibility issues today with our Accessibility plugin!
We are always trying to find new ways to make our accessibility tool feature list lengthier and more beneficial for everyone. Here is a list of some of our helpful accessibility features:
<ul>
<li>
Bigger text. Increase the font size of the text on your website up to 3 times! Some elderly or visually impaired users will be thankful for this increased font size feature.
</li>
<li>
Bigger cursor. Make the cursor on the site more significant so it is easier to find and follow it. This is an excellent feature for the elderly and some visually impaired users.
</li>
<li>
Invert colors. A feature that fully inverts the colors on your website. This feature is beneficial for some visually impaired users.
</li>
<li>
Increase contrast. Make the content of your website stand out more. This feature helps different types of visually impaired users.
</li>
<li>
Decrease contrast. Make your website appear with less color contrast. This helps to focus on the website more for some people who perceive information better in low luminance.
</li>
<li>
Increase brightness. Make your website elements a bit brighter. This is a great tool for visually impaired visitors. Additionally, it works great when you are in a very bright setting (like sunny outdoors!), and you need to make a website a bit brighter.
</li>
<li>
Decrease brightness. A feature makes your website appear a bit darker. Not only a great tool for visually impaired visitors but also, for example, this can be beneficial when you are in a dark environment where the lowest monitor brightness setting is not enough.
</li>
<li>
Grayscale. This feature is beneficial for some visually impaired users.
</li>
<li>
Reading line. Enable a line that follows along the cursor on your website. This benefits some elderly and people with visual impairment.
</li>
<li>
Readable fonts. Websites’ fonts used throughout the internet might appear beautiful, but they can be hard on some visitors’ eyes. These Readable fonts cool feature updates website fonts with a Helvetica font — which is proven as one of the best font type for eyes.
</li>
<li>
Highlight links. A feature that makes the links stand out more.
</li>
<li>
Hide images. This will remove all images on your site, making it easier for some to focus on the written content.
</li>
<li>
Read page. This feature is beneficial for some users as this feature reads website content out loud. This works like your local website’s screen reader.
</li>
<li>
AI-Generated Image Alt tags. Alt Tags is a text alternative for any visual content displayed on your website. This is very beneficial for people using screen readers, as they describe what is shown in an image based on these alt tags. If you haven’t added alt tags manually to your visual content, don’t worry — our AI tool can generate it for you in seconds!
</li>
</ul>
…and many more features! We are always trying to improve accessibility by improving our accessibility plugin. If you have an idea or suggestion for us, feel free to reach out to our support!
Accessibly plugin’s accessibility settings can also be opened using a TAB key shortcut on a keyboard. This is because many visually impaired users are browsing your site using keyboard navigation only — and this specific key is the most popular shortcut used among visitors who are using keyboard only navigation.
<h3>Web Content Accessibility Guidelines</h3>
When thinking about WordPress site accessibility, many people think only about how to become WCAG or ADA compliant, so website owners don’t get sued, which in our minds, is not the right approach to website accessibility standards. When your WordPress website is not accessible, you miss a large internet user base. We should strive to make your WordPress website and other WordPress sites accessible.
Web accessibility is not a sprint — it is a marathon. It is a continuous process that should require your attention whenever you are doing edits or posting new content on your entire site. Accessibility issues can arise almost anywhere and anytime if you are not paying enough attention. Whether it starts from sufficient contrast (Not having light text on a light background!), adding ARIA Labels, add skip links feature, or Closed Captions (CCs) on your WordPress site videos — that should be the first stepping stone when you look in the direction of web accessibility. Website accessibility starts with your input by resolving current accessibility issues on your website, which only then is followed by accessibility plugins or other accessibility tools. If you need assistance resolving accessibility issues, feel free to contact our plugin support, and we will assist you!
Other web accessibility tools can be helpful in the process of making your website accessibility work. For example, we always recommend using some accessibility site checkers from the official W3 website. Make your website accessible – your site visitors and potential clients will be thankful.
<h3>Accessibly Plugin Installation & Customization</h3>
Accessibly plugin does not edit your website’s existing code or tweak your theme files. Add Accessibly Plugin to your site from the WordPress Plugin market, and you are good to go!
If you wish to edit your accessibility toolbar or Accessibly widget, head to your WordPress dashboard. From there, you will be able to change the Accessibly plugin’s colors to match your website’s branding, enable/disable accessibility features and change how your Accessibility plugin feels and looks. WordPress accessibility is not complicated; you must be willing to put in a little effort!
<h3>Contact Us!</h3>
If you have any questions on our accessibility plugin or any of our accessibility features, want to learn more about wp accessibility, or wish to make your site accessible — reach out to our support. We will be glad to assist you!

Accessibly – WordPress Website Accessibility

Accessibly app is a WordPress accessibility plugin that will help your website become accessible to even more of your site visitors.

Spinnaker Dialog Lightboxes vs Accessibly – WordPress Website Accessibility