Responsive Images: The Ultimate Guide
A rundown of responsive image techniques, organized around seven practical problems: semantic markup, art direction, validity, bandwidth, server-side requirements, JavaScript dependence, and third-party reliance. For each it matches a tool to the constraint. Adaptive Images (Apache/PHP) suits sites with lots of legacy content, HiSRC (jQuery) and Picturefill allow custom cropping, Foresight.js tests connection speed, and Sencha.io Src and similar services outsource resizing at the risk of downtime. It ends with a practical guide to installing Picturefill 2.0 and writing its `srcset`/`sizes` and `<picture>` syntax, with the fallback `src` deliberately omitted to prevent double downloads. The piece is a Ghostlab blog post, and its conclusion is that no single solution covers every case, so you should pick based on which problem matters most to your project.