That depends on the markdown implementation (like so many features). But most of them implement "two trailing spaces on previous line force line-break" so you c

That depends on the markdown implementation (like so many features). But most of them implement "two trailing spaces on previous line force line-break" so you can (in most places) do something like this: This is a paragraph with no linebreaks. This is a paragraph with one linebreak but without trailing spaces This is a paragraph with one line break and trailing spaces on previous line That will render correctly on GitHub and other places (meaning, when rendered, the first one has no line-breaks, the second one has no line-breaks but the third one does [select the full third example to see the trailing spaces]) Here is a demo of it in action: https://jbt.github.io/markdown-editor/#dY3RCYAwDET/M8VN4DQuEDW0QWlLUnV9a/0QBCEQuLx7GaM62jAKGwfjEnFqjUgZmyaZTHj1gWj8ASkneUlMe+1xbrsaa7sEeOFZ/N+B2wG6LXg0nJZvvUEoJofm3ftDugA= https://jbt.github.io/markdown-editor/#dY3RCYAwDET/M8VN4DQuE...