Production Tools

Knockout and Halftone in Image Tools

Updated March 19, 2026

5 min read

At a glance

Topic	Details
Best for	Removing a background color from artwork and optionally applying a print-ready halftone before export.
Start here	Open Image Tools, upload a JPG, PNG, or WebP, then open `Knockout + Halftone`.
Outcome	A cleaner production-ready result with more control than a basic background removal pass.

Open it now

Before you start

Image uploads currently accept JPG, PNG, and WebP up to 5MB in the tool picker flow shown here.
Preview is immediate. Export is a separate action that can take longer.
If you came from a draft vector workflow, finalize the vector first before expecting a clean knockout or halftone export path.

Image Tools upload state

This is where the workflow starts: upload the art first, then the tool-specific controls appear.

Image Tools with an uploaded image

Once an image is uploaded, quick tools and the Knockout + Halftone card become available in the left rail.

What the tool does

Samples a background color you want removed.
Uses presets tuned for clean art, distressed art, black fills, or vintage texture.
Lets you preview the result before export.
Lets you keep halftone on or off depending on the output you want.

Knockout + Halftone tool card

Open this card after upload to move from generic cleanup into print-prep controls.

Presets currently shown in the product

Remove White Distressed for cracked or worn white overlays.
Remove White Clean for flatter light fills and cleaner logos.
Remove Black for dark fills that need to become transparent.
Vintage Texture Safe for softer distressed texture that should survive cleanup.

Knockout controls

The first control group covers the removal color, preset, fuzziness, preview background, and the basic Preview or Export actions.

Step-by-step

Upload the artwork.
Choose Knockout + Halftone.
Pick the closest preset.
Use Sample to pick the background color to remove.
Adjust Fuzziness if the first preview misses edge pixels or removes too much.
Use Preview Background to check the result on checkerboard, white, black, or garment color.
Open Advanced Controls only if the default preview still needs help.
Leave Halftone Export on for print-ready output, or turn it off if you only want the knockout pass.
Preview first, then export.

Advanced Knockout and Halftone controls

Advanced Controls expose the threshold, feather, contract, distress-preservation, decontamination, and halftone-density settings.

Controls worth learning first

Control	Why it matters
Sample Color	This decides what the tool treats as removable background.
Fuzziness	Higher values pull in nearby shades and edge pixels.
Preview Background	Shows whether the cleanup still leaves noise around the art.
Halftone Export	Controls whether you get dot-screen output or only a clean knockout pass.
Density	Changes how strong the halftone screen becomes when halftone is on.

Advanced controls that matter most

Inner Threshold controls how aggressively the tool reaches into the sampled color area.
Outer Threshold controls how far the cleanup reaches into nearby edge tones.
Feather softens the edge transition.
Contract pulls the mask inward slightly when a cleaned edge still looks too soft.
Preserve Distress helps keep worn or cracked texture from being over-cleaned.
Decontaminate helps reduce leftover color fringe.

Preview before export: If the preview is wrong, the export will be wrong too. Do not skip the preview step.

Threshold rule: Keep the inner threshold below the outer threshold. If those settings cross over, the cleanup usually gets unstable.

Troubleshooting

Problem	Likely cause	What to try
The edges still look dirty	The sampled color is too narrow or fuzziness is too low.	Resample the background color and increase fuzziness slightly.
The art starts disappearing	The cleanup is too aggressive.	Lower fuzziness and reduce the thresholds before previewing again.
The texture looks flattened	Distress-preserving settings are too weak.	Use a distressed-safe preset and keep Preserve Distress on.
You only want a clean transparency result	Halftone is still enabled.	Turn off Halftone Export before you export.

Example: Removing white from distressed art

Choose Remove White Distressed.
Sample the light background color.
Preview on checkerboard first, then on a garment color if the art is for apparel.
If the texture looks damaged, lower the cleanup pressure and keep distress-preserving settings on.
Export only after the distressed details still look intentional.

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