Grapht – draw Neo4j graph data models in the browser

Grapht is an online tool for drawing graph data models for Neo4j and other property graph databases: nodes, relationships, labels and properties, with layers, notes and automatic arrangement. Nothing to install and no account.

What you can do

• Draw the model. Add nodes, drag relationships between them, and give them labels, types and properties. Every property has a key, a format (for example its type) and an example value.
• Work in layers. Put nodes in layers as in an image editor, and show, hide, lock and reorder them. One switch shows or hides all property texts.
• Add notes. Write notes with bold and italic text and attach them to a node or relationship; they follow along when the graph is rearranged.
• Show it simply. Simple mode shows only the captions of the nodes and the types of the relationships, for a demo or a first sketch. Everything else is hidden, not deleted.
• Arrange with one click. Grapht places the nodes so that as few relationships as possible cross each other.
• Export. Cypher CREATE statements for Neo4j, JSON, SVG and PNG, optionally with the visible layers only.
• Import and merge. Open a model by pasting its JSON, choosing a file or dragging a file into the window, or add an imported model to the open one. When nodes have the same labels you are asked whether to merge them into one node or leave them as they are, and you choose what to keep where they differ. Upper and lower case always follow the Neo4j convention: labels as Person, relationship types as ACTED_IN and property keys as name.
• Style it. Colors, sizes, border widths and text sizes, for one element or the whole model, in a light or dark theme. One button resets the whole model to the default style, which is handy after importing a model.
• Keep your models to yourself. Models are saved automatically in your own browser and as JSON files. Nothing is sent to a server, and the app never contacts any other address.

Try it with an example

Open Neo4j's network management example as a graph model: a data center with its hardware, network and software, in 19 nodes and 38 relationships of 17 types, with Cypher types on the properties, three layers and attached notes.

Questions and answers

What is Grapht?

Grapht is an online tool for drawing graph data models: nodes, relationships, labels and properties. It is made for Neo4j and other property graph databases and runs in the web browser at graph.hlhc.se.

Does Grapht export Cypher for Neo4j?

Yes. A model is exported as Cypher CREATE statements for Neo4j, and also as JSON, SVG and PNG. The export can be limited to the visible layers.

Do I need an account or an installation?

No. Grapht opens directly in the browser. Models are saved automatically in your own browser and can be saved as JSON files.

Where are my models stored, and does anything leave my computer?

Models are stored only in your own browser, on your computer, and in the JSON files you choose to save. Nothing is sent to a server: graph.hlhc.se only delivers the app, and the app makes no requests to any other address. The browser is instructed to block any such request, so this holds even for a model file that someone has tampered with. The Security tab in the app's help (the ? button) explains this in more detail.