Complex diagrams, without the complexity.
A precision canvas for technical diagrams: flowcharts, architectures, neural networks, and more. Native LaTeX, vector exports, and components built for people who care about the output.
Built for
From idea to export in minutes.
No steep learning curve. No fighting with layout engines. Just a fast canvas that does what you expect.
Pick your diagram type
Start from a blank canvas or choose a component category: flowchart, architecture, neural network, ER, and more.
Build with precision
Drag, connect, and label. Subpixel snapping, smart connectors, and native LaTeX mean your diagram looks exactly like you intended.
Export and share
Export to SVG or PDF: vector, fonts embedded, ready for papers, docs, and slides. Or share a read-only link instantly.
The details that make the difference.
Every decision in Spayse is made with care, so you spend time designing, not fighting the tool.
Subpixel Snapping
Nodes and shapes lock to a precise grid. Lines connect to exact port centers. No more nudging by eye.
Native LaTeX Rendering
Write math directly in labels, edges, and callouts. KaTeX renders it live and exports it as crisp vector paths.
Keyboard-First Workflow
Create nodes, wire connections, rename labels, entirely from the keyboard. Hands never leave the home row.
Version-Controllable JSON
Every diagram stores as readable, diffable JSON. Commit it, review it, roll it back, just like code.
True Vector Exports
SVG and print-ready PDF with embedded fonts. Text stays searchable and sharp at any size in any viewer.
Dark & Light in Sync
Design once. Spayse auto-generates both a dark-mode and light-mode version, ready for docs, slides, or print.
Designed to feel fast.
Everything you need, nothing you don't. A canvas that stays out of your way until you need it.
Free to start. $9/mo for everything.
No seat fees, no feature gating by team size. One straightforward Pro plan.