What kinds of diagrams can I make?

Anything built from shapes, lines and text: flow diagrams, network maps, simple architecture sketches, entity relationships and concept diagrams. The canvas is freeform, so you are not boxed into one template.

Can I add images to a diagram?

Yes. Drop an image onto the canvas to use as an icon or a reference, and it is kept on your device along with the rest of the drawing.

Can I export the result?

Yes. Open the canvas menu and export to PNG for a flat image or SVG for a crisp, scalable file. You can also copy the selection straight to your clipboard to paste into a doc or slide.

Does my work get saved if I refresh?

Yes. Your canvas is saved to your browser as you draw, so a refresh or an accidental tab close keeps what you had. Because the save is local to this device and this browser, clearing site data or switching computers starts you fresh, so export anything you want to keep.

Is anything I draw uploaded?

No. The canvas runs entirely in your browser. Your drawing stays on your own device, nothing is sent to a server, and nothing is logged or stored by us. That makes it safe for confidential sketches and early product work.

Diagram Maker

A free online diagram maker for flow, network and architecture diagrams. Use shapes, connectors and labels to show how the parts of a system fit together, then export to PNG or SVG. Everything runs in your browser, with no account, no upload and no watermark.

No sign-up, ever
100% free
Nothing uploaded
Export to PNG & SVG
Works offline after first load

Read the guide: How to Make a Diagram Online

How to use it

1
Lay out the parts

Place a shape for each component or node and label it so the diagram reads on its own.
2
Connect them up

Draw connectors to show how the parts relate, and add text along the lines where it helps.
3
Export the diagram

Save to PNG or SVG, or copy a selection to drop into documentation or a slide.

When it comes in handy

System architecture

Sketch how services, databases and clients connect at a glance.

Network diagrams

Map devices and links so a setup is easy to explain and review.

Concept diagrams

Show how ideas or entities relate without committing to a rigid format.

Instant & 100% private — nothing is uploaded

Everything you draw is handled right here in your browser. Your canvas is never sent to a server, so there is no sign-up, no email wall, and no project cap from us. Load the page once and it keeps working even if you go offline.

Frequently asked questions

What kinds of diagrams can I make?: Anything built from shapes, lines and text: flow diagrams, network maps, simple architecture sketches, entity relationships and concept diagrams. The canvas is freeform, so you are not boxed into one template.
Can I add images to a diagram?: Yes. Drop an image onto the canvas to use as an icon or a reference, and it is kept on your device along with the rest of the drawing.
Can I export the result?: Yes. Open the canvas menu and export to PNG for a flat image or SVG for a crisp, scalable file. You can also copy the selection straight to your clipboard to paste into a doc or slide.
Does my work get saved if I refresh?: Yes. Your canvas is saved to your browser as you draw, so a refresh or an accidental tab close keeps what you had. Because the save is local to this device and this browser, clearing site data or switching computers starts you fresh, so export anything you want to keep.
Is anything I draw uploaded?: No. The canvas runs entirely in your browser. Your drawing stays on your own device, nothing is sent to a server, and nothing is logged or stored by us. That makes it safe for confidential sketches and early product work.