SchemaIt

SchemaIt

Import SPICE netlist

Supported: R, C, L, V, I, D, Q, M, X…opamp. Node 0/GND becomes ground. After the import, orange dashed lines mark connections left to wire.

Netlist from schematic

Nodes come from the drawn wires: ground is node 0, labelled terminals name their nets.

Open schematic

Saved in this browser — click a name to open it.

Unsaved changes

You have unsaved changes. Save them before continuing?

Help & shortcuts

Placing parts

Click a palette entry — or press the key shown beside it — then click the canvas.
R rotates, F flips (while placing or with a selection).
Right-click or Esc stops placing.

Wires

W starts a wire — or, in Select mode, just click a component pin.
Click to turn corners; double-click, Enter or Esc finishes.
A wire ending on another wire connects; crossings don't — drop a Junction from the palette to join them.
J joins selected wires into one.

Editing

Drag parts, labels and arrows directly on the canvas; edit details in the right-hand panel.
Shift+click adds to the selection; drag empty space for a rubber band.
Del delete · Ctrl+D duplicate · Ctrl+A select all
Ctrl+Z undo · Ctrl+Y redo

View

Wheel zooms; middle-drag, Space+drag or the M tool pans.
G toggles the grid; Fit frames the whole circuit.

Labels & text

Names auto-format subscripts (R1 → R₁); use $…$ for LaTeX, e.g. $V_{out}$ .
The Text tool drops a free label; the Box tool drags a shaded area with its own labels.

Files & netlists

Ctrl+S saves in this browser; Open lists saved schematics.
Export SVG/PNG for figures, JSON for backup or sharing.
After a netlist import, orange dashed lines mark connections still to be wired.