Embed Responsively helps web content producers transform fixed width embedded content into fluid responsive embeds.
The code here is based on research and work by Theirry Koblentz, Anders Andersen and Niklaus Gerber. The original Embed Responsively tool was built by Jeffe Hobbs and has been an amazing resource for a long time, but it doesn't look to be actively maintained any more.
This project is licensed under the terms of the MIT license.