codigoed

Little Message Lite is a lightweight WordPress plugin that adds a floating button to your site. When clicked, it opens a compact contact form so visitors can send you a quick message via email — no page reloads required.
Messages are also stored in your WordPress database for easier access and backup.
Just set your email address, and you’re ready to go. Ideal for portfolios, simple sites, landing pages, or anyone who needs a fast and clean way to receive messages.
Includes optional reCAPTCHA v2 or v3 to prevent spam, plus customizable design and display options.
Upgrade to PRO to reply to messages from your WordPress admin, unlock advanced display rules, and add more contact methods like Telegram or Messenger.
<h3>Upgrade to PRO</h3>
Need more features? Upgrade to <a href="https://codigo-ed.com/plugin-mensajito/" rel="nofollow ugc">Little Message PRO</a> and unlock:
<ul>
<li>Reply to messages from the WordPress admin</li>
<li>Customize where and when the button appears</li>
<li>Add Telegram and Messenger contact options</li>
</ul>
<h3>License</h3>
This plugin is free software licensed under GPLv2 or later. 
You may modify, distribute, and use it commercially or personally. 
More info: https://www.gnu.org/licenses/gpl-2.0.html

Little Message Lite

Lightweight contact form with floating button, email alerts, anti-spam, and simple setup. Ideal for small sites.

Bjørn Johansen

This is a WordPressified version of the excellent, lightweight (for real!) imageLightbox.js (MIT-licensed) by Osvaldas Valutis (http://osvaldas.info/image-lightbox-responsive-touch-friendly)
This is his introduction to the lightbox: 
“As for the image lightboxes, I have always lacked simplicity for them. I mean not only the visual design, but the overall experience: from implementation to UX. All due respect, but I have never liked any of these light-fancy-face-boxes. They all were solving problems that just don’t exist: lots of unwanted features by default, total mess in markup, no native behavior for touch screens. I was working on a project and needed an image lightbox that solves these problems. I needed a lightbox only for images, not video, text, and iframes at once. I made ImageLightbox.js.”
This version autodetects all links to image files and opens them in the lightbox.
For your “install, activate and go”-convenience, this plugin comes with a minimal CSS that easily can be deactivated and/or replaced.
The plugin can also be themed to your liking. An example theme is available here: https://github.com/bjornjohansen/imagelightbox-theme-smooth
Please let me know if you have any issues. Fastest way to get a response is by Twitter: https://twitter.com/bjornjohansen

imageLightbox

Image Lightbox, Responsive and Touch‑friendly.

Little Message Lite vs imageLightbox