Using images with ImageKit
Media on this blog lives on ImageKit, not in the repo. Upload an image via the ImageKit dashboard (or CLI), then reference the CDN URL directly in markdown:

Resizing on the fly
ImageKit transforms images via URL parameters, so you can request an
appropriately sized version instead of shipping the original. The content
column here is 680px wide, so w-1360 (2x for retina) is a good default:

Captions
For a captioned figure, drop into HTML — markdown allows it inline:
<figure>
<img src="https://ik.imagekit.io/YOUR_ID/example.jpg?tr=w-1360" alt="Alt text" />
<figcaption>The caption goes here.</figcaption>
</figure>
Video works the same way — upload to ImageKit and use a <video> tag with the
CDN URL.