You need to set GET variable named "embed"<br><br><iframe src="https://mastodon.tomaszdunia.pl/@to3k/110050006958998067/embed" class="mastodon-embed" style="max-width: 100%; border: 0" width="400" allowfullscreen="allowfullscreen"></iframe><script src="https://mastodon.tomaszdunia.pl/embed.js" async="async"></script>