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Tips and Tricks

LightBurn has a decent number of user interface tricks that aren't always obvious, so we're listing them here.

Pop-up tips

Nearly everything in LightBurn has pop-up text that will tell you what the control is for, and sometimes gives additional help, like this:


Topic-aware help function

If you point the mouse cursor at a button or window and press F1 (help), LightBurn will launch your browser and open the documentation on the relevant help page for that control. This works for nearly all controls on the main window.


Edit window shortcuts

The edit window has a number of single-key shortcuts that are only active when you have clicked in the edit window. They are:

  • H - flip selection horizontally
  • V - flip selection vertically
  • L, R, T, B - Align the selected objects by Left, Right, Top, or Bottom edges
  • C - Align the selected objects along their vertical centerlines
  • E - Align the selected objects along their horizontal centerlines
  • P - Move the selection to the center of the page
  • Arrow keys - Move the selection (Shift and Ctrl adjust the size of the move)
  • (comma) and (decimal), usually under < and > are rotate 90 counterclockwise and clockwise
  • Tab - Select the next shape in the shape list
  • Number pad arrows - Jog the laser

Snapping behaviors

LightBurn will automatically align your selection to snapping points if you see the cursor change to a snap cursor before you click:

- The selection will snap to a point

- The selection will snap to a line

- The selection will snap to the midpoint of a line

- The selection will snap to the center of an object


Equation support in number boxes

The position, width, and height boxes in LightBurn will accept not just numbers, but also measurements and equations. All of these are valid:

  • 50mm, 5cm
  • 10 in, 10"
  • 2 ft, 2'
  • 10.25 / 2
  • (10+2) * 4 + 1in

You can also use the constants e and pi, and functions like sin, cos, tan, sqrt, abs, atan, log, pow, and more.


Copy & Paste from other applications

LightBurn can paste data in known formats from other applications.

  • An image copied from a browser can be pasted into LightBurn
  • Text copied from anywhere can be pasted into LightBurn
  • Shapes copied from InkScape can be pasted into LightBurn

Drag & Drop from the file browser

Files in any format supported by LightBurn can be dragged into LightBurn from your file browser (Windows file explorer, or Finder on MacOS).


Automatic file backups

LightBurn by default will save backups of whatever file you are working on. If you have previously saved the file as a LightBurn project, the backup will be stored in the same folder, with the same name, but with _backup appended to it.

If you haven't saved the file with a name yet, LightBurn will store the backups for it in you Documents folder with the name "AutoSave_xxxx" where the x's are a random string of characters. If LightBurn crashes, you can usually open the most recent of these files to recover your work.


Auto-Start a job after Sending it to the laser

Hold the Shift key when you click the Send button in LightBurn to, and LightBurn will automatically run the file on the laser when the send is completed. This is useful if you are sending very complex or large files, and want to be certain that the transfer completes before the job starts running, but saves you having to press Start on the controller.