Syphron Sketch

Draw on your screen, on top of any app

Pens, shapes, text and measuring tools right on top of Windows, on every monitor. Free, offline, no account and no subscription.

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Syphron Sketch pens, shapes, trading markups, text boxes, numbered markers, angle and ruler
System
Windows 10 and 11
Monitors
all of them, DPI per monitor
Price
free, no account
Network
none, no telemetry

A toolbar that stays out of the way

The toolbar floats above everything, docks to any screen edge and can be scaled and made transparent. Whatever is not on the bar sits in two menus that close by themselves on your next stroke.

Syphron Sketch toolbar with pen, select, highlighter, eraser, arrow, rectangle, text, colour, undo and screenshot
The toolbar in its default layout. Drawing mode, pen, shapes, text, colour and screenshot are one click away.

What Sketch brings along

50 tools in one menu

Ten pens, a laser pointer and fading ink. Shapes from a line to a Bézier curve, text, sticky notes, speech bubbles and numbered markers. Plus blur and pixelate, ruler, protractor, colour picker and markups for trading charts.

Syphron Sketch tool menu with selection, pens, erasers, shapes, text, privacy, measuring, trading and presentation tools

Presenting

Spotlight, dimming, magnifier, zoom, frozen screen, whiteboard and blackboard. For training and recordings Sketch shows mouse clicks and keyboard shortcuts, with a countdown and stopwatch.

Syphron Sketch presentation menu with spotlight, magnifier, zoom, whiteboard, click display and timer

Never takes focus

Neither the toolbar nor the drawing surface takes keyboard focus. Your clicker and keyboard keep driving PowerPoint while you draw.

Shape recognition

Hold still for a moment at the end of a stroke and a rough circle becomes a clean one. It runs locally, no AI service involved.

Objects, not pixels

Every stroke stays an object: move, rotate, recolour, group, lock. Layers with visibility and opacity, and undo without a limit.

Shortcuts that only apply when they should

Globally, Sketch claims just a few Ctrl+Shift combinations. Short keys like P for the pen or Ctrl+Z only apply while drawing mode is on, and the arrow keys only when something is selected.

Every binding can be changed. The settings page flags duplicates and shortcuts that another application already owns straight away.

Drawing mode
Ctrl+Shift+D
Back to the mouse
Esc
Undo
Ctrl+Z
Screenshot
Ctrl+Shift+F12
Shortcut settings page with separate columns for global shortcuts and shortcuts in drawing mode

Drawing

  • Pen pressure from a graphics tablet, from speed with a mouse
  • Shift draws straight, Alt draws from the centre
  • Alignment guides and grid snapping while moving
  • Layers that follow an application window

Capturing

  • Screenshots of a region, window, monitor or all monitors
  • PNG, JPEG, PDF, SVG and the clipboard
  • Projects as .sketch files, editable later
  • A history from which every screenshot can be edited again

Platform

  • Installer without administrator rights, or a portable version
  • No network code, no telemetry, no background services
  • No CPU load while idle, nothing gets redrawn
  • Workspaces for support, training, presenting and trading

Free, no subscription, no account

Syphron Sketch costs nothing, and every tool is available to everyone. No trial, no ads, no sign-in. Write to us and you will receive the installer or the portable version.

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