Background Replace

Load Foreground

Drag & drop foreground here

Load Background (optional)

Drag & drop background here

Removal Mode

Tolerance

Higher = remove a wider range of similar colors.

Feather (px)

Edge Smooth (px)

Background Type

BG Color / Gradient

Use both when "Gradient" is selected.

Note Nothing is uploaded. All processing happens locally in your browser.

Color key: click the canvas to pick the background color to remove. | Lasso: click to add points, double-click to close the shape.

Background Replace - Quick Cheat Sheet

Color key removes pixels similar to the clicked color. Increase Tolerance if remnants remain; decrease if it removes too much.
Lasso keeps the area you draw (everything outside becomes transparent). Double-click to close the polygon.
Feather blurs the mask edge outward for softer cutouts; Edge Smooth lightly evens jagged alpha.
Background Type decides what's behind the subject: an image, a solid color, a gradient, or transparent.
Export as PNG (keeps transparency) or JPG (no transparency).
Tip: For classic green/blue screens, use Color key and click the screen area; tweak Tolerance until spill disappears.

Edge cases & notes

Lighting/color spill may require medium Tolerance and a small Feather (1-3 px) to look natural.
Large images: processing happens on the full canvas size; performance depends on device capabilities.
All work is client-side - refresh clears state unless you export the result.