Machine and output

Pass-Through

Also known as LightBurn Pass-Through, Pass-Through mode

LightBurn's mode for engraving an externally prepared image as-is instead of applying another image-processing mode.

By EngravePrep Editorial Team

In the workflow

Why Pass-Through matters

Use it for a final two-color bitmap whose size, DPI, polarity, and dither were already decided.

Practical check

How to evaluate it

Before enabling Pass-Through, confirm the file is already one-bit, correctly sized, correctly oriented, and correctly inverted. The destination should preserve rather than reinterpret those pixels.

Go deeper

A focused handoff guide for importing an externally dithered, one-bit PNG into LightBurn without applying another dither or changing its pixel pattern.

Read the complete guide

Prepare the pixels

Use the terminology in a real photo workflow.

Crop, tune, size, dither, and export a one-bit PNG on iPhone or iPad. Test the result on scrap with your machine and material guidance.

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