Wikimedia Foundation

Enhance your website with free knowledge straight from Wikipedia!
Install Wikipedia Preview, the free add-on designed to better engage your visitors and improve the user experience on your website.
The Wikipedia Preview plugin provides context to your site’s visitors with content directly from Wikipedia. It allows you to add links to your content so that when your visitors click or hover on them, they see a pop-up box with information and images straight from Wikipedia. With Wikipedia Preview your visitors gain context on a topic, without ever leaving your website.
Wikipedia Preview is an official plug-in designed and developed by the <a href="https://wikimediafoundation.org/" rel="nofollow ugc">Wikimedia Foundation</a>, the non-profit behind Wikipedia and other free knowledge projects.
The plug-in is entirely free to download and use, in line with the Wikimedia Foundation’s mission to provide free knowledge for everyone.
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/_m6YzR0j8Fs?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
Benefits
<ul>
<li>Rich-media content straight from Wikipedia, to give your site’s visitors the context they need, without ever having to leave your website.</li>
<li>Always free.</li>
<li>Available in 300 languages.</li>
<li>Easy to set up. Adding Wikipedia Preview links is even easier than adding other hyperlinks.</li>
<li>Leveraging the content and brand name of one of the most popular websites in the world.</li>
</ul>
Features
<ul>
<li>Can be set up using the same process you use to add hyperlinks to your articles or using the Gutenberg editor custom tool.</li>
<li>Handles any link to a Wikipedia article regardless of language, lead image presence or length.</li>
<li>Site owners can choose a specific section of an article as a preview, not limited to just the lead section.</li>
<li>Supports dark mode option for improved readability.</li>
<li>Works for Right-to-Left (RTL) and Left-To-Right (LTR) languages.</li>
<li>Offers access to a built-in gallery to dive into article images.</li>
<li>Can be disabled for any page using the post metadata sidebar.</li>
<li>Uses Gutenberg editor custom tool to search for Wikipedia articles and visualize Wikipedia Preview for readers.</li>
</ul>
How to add preview links to your site
Option 1 – How to add Wikipedia Preview links using the Classic Editor:
<ul>
<li>Add a Wikipedia article link to your site’s content using the same process you use to add hyperlinks to your articles.</li>
</ul>
Option 2 – How to add Wikipedia Preview links using the Gutenberg/ Block Editor:
<ol>
<li>Highlight the text you want to link to a Wikipedia article.</li>
<li>Select ‘W’ – Wikipedia Preview icon from the menu.</li>
<li>You will see a list of suggested articles. Select the one you want to link to.</li>
<li>Wikipedia Preview will automatically turn the link into a preview of the relevant Wikipedia article. You can easily customize the preview content by selecting a specific section of the article.</li>
</ol>

Wikipedia Preview

Textbook implementation. Also, this is just a fun way to add more interactivity to your blog, plus possibly learn something new.

Textbook

Fantastic plugin

Wikipedia Preview lets you show a popup card with a short summary from Wikipedia when a reader clicks or hovers over a link.

papy3d

Papy3D Fact Viewer for Chuck365 is a modern and lightweight plugin designed to add a touch of humor to your WordPress site. It automatically retrieves a unique Chuck Norris “fact” every day via the official Chuck365.fr API.
The plugin is built with performance and security as top priorities:
<ul>
<li>Optimal Performance: It utilizes the native WordPress Transients API to cache the daily fact locally, ensuring your site remains fast and minimizes external server requests.</li>
<li>Maximum Security: Developed according to 2026 coding standards, the plugin includes strict data sanitization, XSS protection, and CSRF validation. </li>
<li>Full Customization: A dedicated administration panel allows you to adjust colors, titles, and display options to perfectly match your theme.</li>
</ul>
Note on External Services: This plugin connects to <code>https://chuck365.fr/api.php</code> (API) to fetch daily facts. This is a mandatory external service for the plugin to function as intended.
<h3>External services</h3>
This plugin connects to the Chuck365.fr API to retrieve a unique Chuck Norris fact each day. This external connection is required for the plugin to function.
Service: Chuck365.fr API (<code>https://chuck365.fr/api.php</code>) 
Purpose: Fetching the daily Chuck Norris fact displayed in the widget. 
Data sent: A standard HTTP GET request with a User-Agent header identifying the plugin version. No personal user data is collected or transmitted. 
When: Once per day, when the daily cache (WordPress Transient) has expired. Regular site visitors never trigger a direct API call. 
Service provider: Chuck365.fr, operated by Papy 3D Factory. 
– Terms of service: https://chuck365.fr/terms.html 
– Privacy policy: https://chuck365.fr/privacy.html 
– API documentation : https://chuck365.fr/api-doc.html (fr/en)
<h4>Donation button (optional)</h4>
The “Support the project” tab contains an optional PayPal donation button. 
Clicking it redirects to paypal.com. No data is sent automatically — 
it is only triggered by a voluntary user click. 
Terms: https://www.paypal.com/us/legalhub/useragreement-full 
Privacy: https://www.paypal.com/us/legalhub/privacy-full

Papy3D Fact Viewer for Chuck365

Displays a unique and different Chuck Norris fact every day via the official Chuck365.fr API.

Wikipedia Preview vs Papy3D Fact Viewer for Chuck365