Public Work by Cosmos
Public Work is a visual search engine for public domain content from The MET, New York Public Library, and other sources.
Automatically compress images on Pull Requests
Calibre’s new GitHub Action allows you to compress raster images with minimal setup automatically. Never ship unoptimised graphics again.
Hassle Free Responsive Images for WordPress | CSS-Tricks
Gratisography: Free, use as you please, high-resolution pictures.
Magnific Popup: Responsive jQuery Lightbox Plugin
Faaaaast
Cross Browser Retina/High Resolution Media Queries
Responsive background images with fixed or fluid aspect ratios – Voormedia
What's the easiest way to scale background images in responsive layouts? We use an old technique and enhance it to fluidly change the aspect ratio of background images.
21 Free Textures for your Delight
The Shocking Truth About How Web Graphics Affect Conversions
Adaptive Images in HTML
ResourceSpace: Open Source Digital Asset Management (DAM)
ResourceSpace is a web-based, open source digital asset management system which has been designed to give your content creators easy and fast access to print and web ready assets.
15 Amazing jQuery Image Gallery/Slideshow Plugins and Tutorials
Links to existing packages