Online Diagram Maker

Make diagrams quickly, no sign in or sign up required. Sales pitch not necessary.

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Create Diagrams Quickly

Vexlio is a simple, fast solution for creating many types of diagrams quickly. We're not here to blast you with features, just a tight set of tools for diagramming.

  • Easy alignment and auto-spacing. Smart drag-and-snap tools automatically find the best placement for objects as you move them.

  • Label arrows in one click. Connectors stay attached to your shapes, and labels position automatically.

  • Smart tools make common tasks fast. Purpose-built tools solve common diagramming needs like duplicate-in-grid.

Simple state diagram showing an autosave state flow.
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Key features of Vexlio to make diagrams

Suite of tools for making diagrams has been tuned for precision and ease-of-use.

Simple state diagram with three states and two transitions.
  • Infinite canvas. Scroll and zoom without page limits, whether your diagram has five states or five hundred.

  • LaTeX-powered labels. Enclose math in $...$ to render guard conditions, probabilities, or formal annotations right on the canvas.

  • Syntax-highlighting built in. Create software engineering diagrams with built-in code syntax highlighting.

  • Multiple export formats. Export to retina-quality PNG, PDF and SVG.

  • Precision editing. Numeric control panels set exact widths, positions, corner radii, and more. Alignment guides keep even complex layouts tidy.

  • Contextual help. In-app help panel provides you with per-task info and useful tips like keyboard shortcuts.

  • In active development. Improvements and features added regularly.

No sign-up needed

Try Vexlio, the diagram tool built for speed and precision. See it for yourself!

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No account required

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Build your first diagram in minutes

  • Create a blank canvas. Go to the Main Menu and choose New Document.
  • Add shapes. Press R for rounded rectangle or C for ellipse, then click and drag to place.
  • Map transitions. Choose a connector type, then click on two points to connect. Vexlio's smart connectors snap exactly to the shape perimeter and move automatically if you move things later.
  • Annotate. Double-click a connector or shape to add a label. Or, press Q and click to create a live-edit LaTeX expression.
  • Refine layout. Use alignment, distribution, and the drawing grid to keep the overall flow readable at a glance.
  • Export. Choose SVG or PDF for crisp vectors (paid), or PNG for quick slides or docs.
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Here's what our users have said

Real users speaking about Vexlio's previous desktop version:

I was able to knock together some pretty nice diagrams super-quickly using the demo version. Lots of nice touches.
— Gabe R.
Your application fits an empty spot in my toolbelt.
— Clint P.
Definitely addresses many of the pain points I have with Google Drawings, Inkscape etc. for making diagrams.
— Jim M.
Vexlio has no learning curve - so easy to use.
— Peter L.

Give Vexlio a try now

Jump into the app right away and start drawing - no signup needed.

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