SVG Files for Glowforge: Upload, Steps and Fixes

The Glowforge app runs in your web browser, and it reads your design straight from the file you upload. There is no separate layer setup program in between. That makes it quick, but it also means the file itself has to be right. This guide explains what good SVG files for Glowforge look like, how the app turns colours into steps, and how to fix the problems that show up most often.

Why Glowforge prefers SVG

The Glowforge app accepts SVG, PDF, JPG and PNG uploads, among others. For cutting, SVG is usually the best choice:

• It holds vector paths, which the laser can cut and score along.
• It keeps exact colours, which the app uses to split the design into steps.
• It can hold filled shapes for engraving in the same file as the cut lines.

A JPG or PNG can only be engraved, because there are no lines to follow. PDF works, but some PDFs arrive with clipping masks or merged colours that make the steps harder to sort out. If a design pack gives you both, start with the SVG.

What makes good SVG files for Glowforge

Before you upload, check the file against this list. It applies whether you drew it yourself or downloaded it.

• One colour per operation. For example, red for cut, blue for engrave, green for score. The app makes one step per colour, so five shades of red means five cut steps.
• Real size, in millimetres or inches. The app uses the size stored in the file. A box designed at 150 mm wide should arrive at 150 mm wide.
• Text converted to paths. Fonts that are not on Glowforge's side may not display correctly.
• No duplicate lines. Stacked lines get cut twice, which leaves a wider, darker edge.
• Closed shapes for engraving. An engrave area must be a filled, closed shape.
• Fits the bed. Check the usable work area for your model in Glowforge's own specs. If a design comes in sizes, pick one that fits with a margin.

Files from our laser cut file generator follow these rules: red #FF0000 for cut, blue #0000FF filled shapes for engraving, green #00FF00 for score, and black for part names that are only there for reference. Each design comes in one size or S/M/L/XL, so you can choose a size that suits your bed.

How to upload an SVG to Glowforge

1. Open the Glowforge app in your browser and make sure your machine is online.
2. Place your material on the bed first, so the camera image shows it.
3. Use the app's upload option (Upload from file) and pick your SVG.
4. Choose your material. Pick a Proofgrade material if you are using one, or the uncertified option to enter your own settings.
5. Look at the steps list on the left. Each colour from the file has its own step.
6. Set each step to Cut, Score, Engrave or Ignore.
7. Drag the design onto the material in the camera view, keeping clear of edges, knots and old cuts.
8. Click Print, then press the glowing button on the machine when it asks.

If parts of the design show as dashed outlines, they sit outside the printable area. Drag them inside the work area, or reduce the layout.

How colours become steps

When the app reads an SVG, it groups everything by colour. By default, it guesses an operation for each group: strokes usually come in as Cut and filled shapes as Engrave. The guess is a starting point, not a rule, so always check every step.

For a file using the red, blue, green and black convention, set the steps like this:

• Red lines: Cut.
• Blue filled shapes: Engrave.
• Green lines: Score.
• Black reference text: Ignore. This stops the part names from being engraved onto your work.

If the app shows more steps than you expected, the file has colours that are close but not identical, such as #FF0000 and #FE0000. Fix it in your design program by selecting those lines and setting them to exactly the same colour. Our guide to laser cutting vs engraving vs scoring explains which operation suits which part of a design.

Getting the step order right

Order matters. Engraving and scoring should happen before cutting. Once a part has been cut free, it can shift slightly or tilt, and any engraving that runs afterwards will be out of place.

Inside cuts also need to happen before the outline. If the outer shape is cut first, the part may drop a little, and the small holes inside it can end up offset.

The steps list can be dragged into a new order. A good default order is:

1. Engrave
2. Score
3. Cut inner shapes
4. Cut outer outlines

If your design has inner and outer cuts in the same colour, the app treats them as one step. That is usually fine, but on small or delicate parts, watch the first job closely.

Material settings: start conservative

Proofgrade materials come with settings built in. For anything else, you choose the speed, power and number of passes yourself, and those are starting points to test, not fixed values. Glowforge models differ in power, and two sheets of the same plywood can behave differently.

A safe approach:

• Cut a small test square and circle in a corner of the sheet first.
• If it does not cut through, add a pass or lower the speed a little, rather than jumping straight to full power.
• For scoring, start with low power and a fairly fast speed and increase until the line is visible.
• Set the material thickness correctly, or use the app's focus/height option, so the beam is focused on the surface.

Not every material is safe. Never cut PVC, vinyl, polycarbonate, ABS, fibreglass, coated carbon fibre or chrome-tanned leather. Our list of materials you should never laser cut explains why.

Kerf and finger joints on a Glowforge

The Glowforge beam removes a thin strip of material as it cuts, called the kerf. On a box with finger joints, kerf decides whether the joints fit snugly or fall apart.

Our finger joint box files already build kerf into the joints, using starting values like 0.15 mm for 3 mm plywood, birch plywood and MDF, and 0.12 mm for basswood and cast acrylic. Your machine and material may differ slightly. If joints come out loose or tight, run a quick kerf test using our kerf test guide before cutting a full box. The files are generated and checked by software, so a test piece on your own material is always the smart first step.

Common Glowforge SVG problems

• Design is tiny or huge. The file was saved without proper units. Re-export from your design program with the document set to millimetres or inches, then upload again.
• Engrave area cuts out instead. The shape is a stroke, not a fill, or the step is set to Cut. Change the step to Engrave, or fill the shape in your design program.
• Lines are missing. They may have no stroke colour, or be hidden in a clipping mask. Give every line a visible stroke.
• Too many steps. Near-identical colours. Unify them in your design program.
• Part names got engraved. The black reference step was left on. Set it to Ignore.

Above all, stay with the machine while it runs, keep the lid closed and the exhaust running, and keep a fire extinguisher nearby. Do not leave a Glowforge running unattended.

Frequently asked questions

Can I use any SVG file on a Glowforge?

Most SVG files work, as long as the cut lines are vector paths and the design fits your bed. Files with clean colours and real units upload with the fewest surprises.

What colours does Glowforge use for cut, score and engrave?

Glowforge does not require specific colours. It makes one step per colour and lets you choose the operation. A clear system, such as red for cut, green for score and blue for engrave, makes the steps easy to set.

Why does my SVG show up with too many steps?

Your file contains colours that look the same but differ slightly. Set all lines for the same operation to one exact colour, then upload again.

Do I need a DXF file for Glowforge?

No. Glowforge works from SVG, which keeps colours and fills. Use the SVG from a design pack and keep the DXF for other software.