Free Diagram Maker
Describe what you need in plain English – or paste in code – and Eraser draws it. Free to try, no account required.
Want this for your team?
Let’s chat if your team has a specific diagramming workflow to automate. We’ve helped many Fortune 500 companies with diagramming.
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Frequently asked questions
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Is it really free?
Yes. Generating a diagram is free and requires no sign-up. Sign in to a free Eraser account to edit, save, and export what you make.
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Can I edit the diagram after generating it?
Yes. Click “Save and Edit Diagram” to open it in Eraser, where you can edit using diagram-as-code syntax or the visual editor.
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Which diagram types can I make?
Flowcharts, entity relationship diagrams, cloud architecture diagrams, sequence diagrams and BPMN diagrams. Pick a maker below to start from a specific type.
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What can I use as a prompt?
Plain English, a nested list, or a code snippet. You can also paste excerpts from requirements docs, transcripts, or knowledge-base articles.
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Is there an API?
Yes, you can read our API documentation. The API is only available to Starter, Business, and Enterprise Plan teams.
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Is there an MCP server?
Yes. The Eraser MCP server lets an agent create, search, read, update and export diagrams from clients like Claude, Cursor, VS Code and ChatGPT. It is free to use, subject to the AI credit limits of your plan.
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Do you use my data to train AI models?
No. Neither Eraser nor our model providers use your data to train AI models. Eraser may analyze usage to improve and enhance our AI features.