Block Diagram Maker
Create block diagrams rapidly with powerful and easy to use online diagram tool. Smart connectors and tools let you work fast.
No account required!
Create Block Diagrams Quickly
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Easy alignment and auto-spacing. Smart drag-and-snap tools automatically find the best placement for shapes as you move them.
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Auto-updating connectors. Connectors stay attached to your block shapes, with common and not-so-common geometry options. Labels position automatically.
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Syntax-highlighting built in. First-class support for software engineering block diagrams with built-in code syntax highlighting.
Get in the Block Diagram Flow
Suite of tools for making block diagrams has been tuned for precision and ease-of-use.
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Contextual help. In-app help panel provides you with per-task info and useful tips like keyboard shortcuts.
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Multiple export formats. Export to retina-quality PNG, PDF and SVG.
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In active development. Improvements and features added regularly.
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.