Chord Diagram Maker: Free Relationship Diagrams
Making a chord diagram image is quick: open the free chord diagram maker, list your groups around the circle, enter each relationship as a source, target, and value, then download a PNG or SVG. It's the fastest way to show many-to-many flows between a handful of groups on a single picture.
What a chord diagram showsWhat a chord diagram shows
A chord diagram puts your groups as arcs around a circle and draws ribbons between them. Each ribbon connects two groups, and its thickness tracks how strong that link is. Thicker ribbon, bigger number. Because every group can connect to every other one, the diagram is built for relationships that run in lots of directions at once.
You reach for one when a plain arrow or bar chart can't hold all the connections:
- Migration between groups: how people move between regions, teams, or plan tiers.
- Cross-sell between products: which products customers buy together and how often.
- Referrals between channels: how traffic or leads pass from one channel to another.
The trick is to keep it to three to eight groups. Two groups don't need a circle, and a dozen turns the middle into a knot. In the sweet spot, the heaviest ribbon jumps out and tells you the dominant relationship before you read a single label. That's something a matrix of numbers makes you work for.
Make one freeMake one free
Open the chord diagram maker. You enter your groups, then add each relationship as a source, a target, and a value. The tool draws the circle and its ribbons as you go, so you can adjust names, numbers, and colors until the picture reads clearly.
There's no account to create and nothing to install. When the diagram looks right, you download it. You get a clean PNG for slides and docs, or an SVG if you want it sharp at any size. No signup, no watermark, no credit card.
That covers the one-off case. If you rebuild the same diagram every week or need one per client, keep reading.
Embed it anywhereEmbed it anywhere
A chord diagram from the tool is just an image, which is what makes it easy to place. Drop it into a slide, paste it into an email, or add it to a doc. In markdown or HTML, one line does it:
Static files are perfect for a fixed report. But if your relationships change, you don't want to redraw the circle by hand. Embed a render URL instead of a saved file and the image regenerates on each load, so the diagram reflects the latest values without you reopening anything. Same one-line embed, live data behind it.
Generate at scaleGenerate at scale
When you need more than one diagram, the API takes over. A single render call turns your groups and relationships into a finished image, and you can swap the data per request. One design covers every report, every dashboard tile, or every automated email.
Here are the paths, from least to most hands-off:
- API: the API docs walk through a render call with tested examples you can copy and run.
- Component: the chord diagram is a first-class API component, so you configure groups, links, values, and colors as fields. See the chord component for what you can set.
- AI agent: an AI agent can build the diagram over MCP, so you describe the relationships in plain language and it produces the image.
Pick the level that fits. A quick script wants the API, a repeatable design wants the component, and a hands-off workflow hands it to an agent.
Start with the chord diagram makerStart with the chord diagram maker
For a single diagram, the chord diagram maker gets you a PNG or SVG in a minute, free and unwatermarked. To automate it, read the chord component reference, then wire it up through the API docs or hand it to an AI agent.
The free plan includes 100 renders a month, which is plenty to test the automated path before you scale it up. Build the chord diagram that finally makes your busiest relationship obvious.