Quiver is a notebook built for programmers. It lets you easily mix text, code and Markdown within one note, edit code with an awesome code editor, live preview Markdown and LaTeX cells, and find any note instantly via the full-text search.
Quiver Data Format
As you see, most of the cells are pretty straightforward, except the cell about image.
So what I need to do is copy the source of images to where my jekyll assets are, “~/Desktop/blog/assets” for example. Then I convert the html syntax in text cell to markdown, replace the source url to right one. Done!