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Free AI Flowchart & Diagram Generator

Try
Diagram type
Detail
Design Changes apply instantly
Style
Colour
Direction
Arrows
Example
Yes No Yes No Try again Customer opens cartSigned in?Sign in orcontinue as guestEnter shippingaddressEnter payment detailsPaymentapproved?Show card errorSave orderOrder confirmed

Click to edit · drag to move · double-click to add · scroll to zoom

How it works

How to use the AI Flowchart Generator

Describe it in plain words — get a diagram you can drag, edit and export.

  1. Step 1

    Describe it in plain words

    A process, a system, a team — or paste notes or Mermaid code.

  2. Step 2

    Pick a diagram type

    Flowchart, swimlanes, org chart, architecture and more.

  3. Step 3

    Edit and export

    Drag and restyle, then download PNG or SVG, or copy Mermaid.

  • Free to use
  • No sign-up
  • Your key stays in your browser

What you can make with it

  • Flowcharts

    Steps, decisions with Yes / No branches, start and end.

  • Swimlanes

    Each step in the lane of the person or team who does it.

  • Org charts

    Managers and reports, with names and roles.

  • Architecture diagrams

    Clients, services, databases and what flows between them.

  • Decision trees

    Questions, answers and the outcome of each path.

  • User flows

    Screens, actions and where each choice leads.

AI Flowchart Generator FAQ

Is this AI flowchart generator free?

Yes, with no sign-up and no watermark. The AI runs on your own OpenRouter account, where free models cost nothing; editing and exporting happen in your browser.

Can I edit the diagram after it is generated?

Yes. Drag boxes, rename them, change shapes and colours, connect or delete them, or tell the AI what to change. Tidy up re-arranges everything, and undo works for every step.

What is Mermaid code and why export it?

Mermaid is a text format for diagrams that GitHub, GitLab, Notion and Obsidian draw for you. Copy it into a README or a page and the diagram stays editable as text.

Can I turn Mermaid code into a diagram here?

Yes. Paste the code into the description and generate — the AI converts it into a diagram you can drag and restyle.

Does it need an image-generation model?

No. The AI only decides the boxes and arrows; the layout and drawing happen in your browser, so any text model works, including free ones.

Which formats can I download?

PNG at double resolution for slides and docs, SVG that stays sharp at any size, and Mermaid code for docs and repositories.

Is my description stored anywhere?

Only in your browser's history. Your text goes straight from your browser to the AI model you picked.

Connect your AI

All 22 tools run on your own OpenRouter account. Free models cost nothing.

or paste a key

No key yet? Create one free

Your key stays in this browser and is sent only to openrouter.ai.