Twitter used to have a really convenient way to embed a feed into your website, but now Twitter is dead.
Emfed is a simple, in-browser way to embed Mastodon feeds into webpages. To make a feed like the one on this page, you use simple markup like this:
<a class="mastodon-feed" href="https://mastodon.social/@Mastodon" data-toot-limit="4" >follow me into the Fediverse</a>
<script type="module" src="https://esm.sh/emfed"></script>
Optionally, consider adding the stylesheet (or otherwise just style it yourself, however you like):
<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/gh/sampsyo/emfed@1/toots.css">
One place you can see Emfed in action is at the beets project. The code is dedicated to the public domain. For more details, check out the README.