Visual Lab
Flowchart Maker
Draw a flowchart, then copy an image URL that renders it anywhere Markdown works. The image is generated on demand from the URL itself, so there is nothing to upload and nothing to keep in sync.
How the embed works
The whole diagram is encoded into the image URL. When something requests that URL, the server decodes it, lays the diagram out and renders an SVG or PNG on the spot.
Because the output depends only on the URL, the same URL always produces the same image — so responses are cached permanently and repeat views cost nothing. It also means there is no stored document that can be deleted out from under your README.
Node positions from the canvas are not part of the URL. The server runs its own layout, so the rendered diagram is tidy no matter how the boxes were dragged around.