The Jekyll-from-URL workflow
For each URL: convert to Markdown with auto-generated YAML front matter (title, date, layout, tags). Save as _posts/YYYY-MM-DD-slug.md using the article's publication date and a slugified title. Run jekyll build: the new post appears on your site immediately, indexed by Jekyll's default sort and surfaced through any tag/category pages your theme exposes.
Common use cases: migrating from a hosted blog platform (Medium, Substack, Ghost) to a self-hosted Jekyll site; republishing your own articles with permission; building a curated link-blog where each post is an excerpted article with attribution.
Front matter Jekyll expects
Minimum: layout: post (or your theme's post layout), title, date. Common additions: tags, categories, excerpt, permalink. The conversion produces all of these from source metadata where available; you customise per your site's conventions.