Edit text → diagram updates → URL updates. Drag nodes → positions saved in URL.
Diagram definition language
# starts a comment. Inline comments are supported.
Node line:
n [size] [shape] [color] [url] [text...]
Edge line:
a -> b (-> c ...) [size] [lineStyle] [color] [url] [text...]
Attribute order is fixed:
size, style, color, URL fragment, text
— but any can be omitted.
URL token:
/example.com becomes https://example.com.
You can also use https://... directly.
A line containing only a supported color name sets the diagram background color.
Reserved words
Node shapes (style)
Node sizes
Colors
Edge line styles (style)
Interactions
drag move nodes
hover see node/edge text
click follow node/edge link
Tip: use Commit snapshot to create Back/Forward checkpoints while you edit.
Saving on HashBin
Save to HashBin uploads the source and node positions to hashbin.org with your API key,
paid from your account balance (usually $0.01). The URL becomes
#256t=<CID>,
a short link anyone can open; the diagram is fetched from 256t.us.
Saved content can't change, so editing a saved diagram switches the URL back to the long
#h1= form until you save again. Saving an unchanged diagram again extends how long it's kept.
#256t= also opens any plain-text file on HashBin as diagram source.
Shareable state: source + node positions are encoded in the URL hash, or saved on HashBin and referenced by CID.
Try: edit the text, then Save to HashBin for a short link.