About
This site is a straightforward online diagramming tool. Open it and draw — no account, and no expectation that you hand your data over to us.
What you can do here
Flowcharts, mind maps, org charts, SWOT analyses, project plans, sequence diagrams, ER diagrams, network topologies, UML class diagrams and wireframes — all drawn directly in the browser. The editor supports dragging nodes, free-form connections, and exporting to PNG, SVG, or an editable source file.
- No sign-up and no login; the page is the whole onboarding
- Built-in templates so you never start from a blank canvas
- Export PNG for documents, SVG for anything that will be enlarged, and a source file to keep editing later
Where your data lives
Diagram content is stored in your own browser storage and is not automatically uploaded to our servers. That puts you in full control, and it also means clearing browser data clears your diagrams — export a source file for anything you intend to keep.
Guides and content
Beyond the tool, we maintain practical guides on how to draw each diagram type: how to decompose a process, how to settle hierarchy, and what to check during review. They come from real project experience, and the aim is diagrams you can actually use for communication and delivery.
Contact
If you hit a problem, spot an error, or have a feature suggestion, email us at the address below. We also handle copyright and privacy enquiries through the same channel.
Contact us at support@manqiong.com