Hello,
Do you know if it’s possible to import a site into Sketch, as proposed by a plugin like html.to.design for Figma?
Thanks to all!
Hi there Clément,
Welcome to the Forum! Sorry about the late reply 
As far as I know, there are no current plugins that can import and convert HTML/CSS into editable Sketch layers. There’s an old plugin that did the job, named HTML-Sketchapp. You can stilll download it from Github, but it may not work in the latest versions. The last release of the plugin was about 3 years ago.
However, we recently received a new plugin submission that can create Sketch layers from screenshots. So if you need to turn a live website to a Sketch document, you can try this plugin as well. It’s a paid for plugin, but has a trial mode. Here’s the image to Sketch plugin