Automatic Image Preparation for Laser Engraving

Prepare photos and graphics for laser engraving with GravoLab. Upload an image and GravoLab will automatically process it into a grayscale image prepared for laser engraving, using GravoLab’s automatic settings.

The automatic mode gives you a ready-to-use starting point without requiring manual adjustments. You can then fine-tune the image yourself by adjusting the available settings until you achieve the result you want.

GravoLab supports three image processing modes: Grayscale, Dithering and Halftone, giving you different ways to prepare your artwork depending on your engraving workflow.

Automatic Image Preparation

When you upload an image, GravoLab automatically processes it in Grayscale mode using its default image preparation settings.

The result is immediately optimized as a starting point for laser engraving, so you can see how your image looks without having to configure every setting manually.

The automatic settings are designed to provide a practical starting result, but they are not intended to be the perfect solution for every image, laser or material. If you want more control, you can adjust the image yourself and fine-tune the result to your preference.

Prepare Photos for Laser Engraving

A photograph that looks good on a screen does not necessarily produce a good laser engraving. Dark areas can lose detail, highlights can disappear and subtle tones may not translate well to the engraved surface.

GravoLab’s Image Prep tool lets you adjust important image characteristics such as contrast, brightness, sharpness and detail before sending your artwork to your laser software.

It can be used for portraits, photographs, logos, product images and other graphics.

Three Image Processing Modes

Fine-Tune Your Engraving Artwork

There is no universal image setting that guarantees the same result on every laser or material. The final engraving depends on factors such as the machine, focus, resolution, speed, power and material.

That’s why GravoLab’s automatic settings are designed as a starting point, while the available controls let you make the final adjustments yourself.

Recommended presets for different materials will also be added to GravoLab. These presets will provide GravoLab-recommended starting points, rather than claiming to be universally correct for every machine or engraving setup.

Quick Tips for Wood Laser Engraving

These practical wood laser engraving tips help you get darker engravings, cleaner details, and more consistent results. Use them when preparing photos and settings for engraving on plywood, hardwood, and other wooden surfaces.

• Choose tight-grain wood for detailed engravings. Maple, beech, and birch usually engrave cleaner. Strong grain patterns can overpower fine photo details.
• Sand before engraving for a smoother, more even tone. A light sand (fine grit) reduces blotchy burns and improves consistency across the surface.
• Clean dust and oils before engraving. Dust, fingerprints, and resin can cause uneven marks. Wipe with a dry cloth/brush (or lightly with isopropyl alcohol).
• Always run a small test engraving first. A quick 20–30 mm test saves material and helps you dial in power, speed, and contrast before the final piece.
• Slower isn’t always better. Too much power or too slow speed can over-burn wood and blur details. Aim for crisp lines and controlled darkness.
• For photo engraving: increase contrast and reduce midtones. Wood tends to turn midtones into “muddy gray.” Strong highlights and deep shadows usually produce better results.
• Use low air assist for engraving (high air is for cutting). Strong air assist can cool the burn and blow away smoke/soot too aggressively, often making engravings lighter with less contrast. Use air assist off or very low—just enough to keep the lens clean.
• Wood grain direction affects fine lines and small text. Thin lines parallel to the grain can disappear more easily. If possible, rotate the design to improve legibility.