About this tool
Create a responsive <img> tag with a srcset and sizes attribute from a base image path and a list of widths; the markup is produced locally in your browser.
Frequently asked questions
How are the srcset URLs named?
Each width produces a URL like path-640w.jpg with a matching 640w descriptor, a common naming convention for responsive image variants.
Do I still need to create the resized images?
Yes. This tool generates the markup; you must produce the actual resized image files at each listed width.