I considered switching to Hugo a while back but ended up sticking with Jekyll for the extensibility, like a few others have said. I'm particularly interested in image thumbnailing and format conversion since so many of my posts are image-heavy. I often found that to be my biggest and most frequent barrier to writing since plain text only goes so far on the modern web.
In Hugo, every solution I've seen uses a custom shortcode or custom Markdown image template-rendering hook along with Hugo's build-in image resizing. Many posts even suggest converting image resources to different formats with an external tool. It does seem like the image handling situation in Hugo is improving since it just gained WebP processing support in addition to JPEG: https://gohugo.io/news/0.83.0-relnotes/
Jekyll plugins offer way more power than a shortcode ('include' in Jekyll-speak) can, like how the author of the OP is using Jekyll-Picture-Tag. I've been working on my own similar plugin to handle converting and embedding my site's images, videos, SVGs, PDFs, text files, fonts and weird retro computer formats, etc. For example I can embed an SVG using standard Markdown syntax like `` and get a <picture> tag with the SVG plus rasterized JPG+WebP+AVIF+whatever at multiple sizes all totally seamlessly: https://github.com/okeeblow/DistorteD
Very happy the existence of Hugo lit a fire under the Jekyll team to work on speed though :)
In Hugo, every solution I've seen uses a custom shortcode or custom Markdown image template-rendering hook along with Hugo's build-in image resizing. Many posts even suggest converting image resources to different formats with an external tool. It does seem like the image handling situation in Hugo is improving since it just gained WebP processing support in addition to JPEG: https://gohugo.io/news/0.83.0-relnotes/
Jekyll plugins offer way more power than a shortcode ('include' in Jekyll-speak) can, like how the author of the OP is using Jekyll-Picture-Tag. I've been working on my own similar plugin to handle converting and embedding my site's images, videos, SVGs, PDFs, text files, fonts and weird retro computer formats, etc. For example I can embed an SVG using standard Markdown syntax like `` and get a <picture> tag with the SVG plus rasterized JPG+WebP+AVIF+whatever at multiple sizes all totally seamlessly: https://github.com/okeeblow/DistorteD
Very happy the existence of Hugo lit a fire under the Jekyll team to work on speed though :)