How do you restore fine lines after background removal?

Zoom into the gap, align the Restore brush with the surviving line, and paint only the missing section. Size the brush to the line, then check the pixels on both sides before exporting the transparent PNG.

A row passes if all 90 missing pixels return at x=45–74 and y=39–41 and no backdrop pixel becomes opaque.

Test dateTool and versionSame source or frameSetting changedResult
2026-11-15Node 24.22.1line-source.png and line-damaged-cutout.png1 pxFail. In the gap, only the center row returned (30 of 90 line pixels).
2026-11-15Node 24.22.1line-source.png and line-damaged-cutout.png3 pxPass. All 90 gap pixels returned and the nearby green stayed transparent.
2026-11-15Node 24.22.1line-source.png and line-damaged-cutout.png5 pxFail. The gap closed, but 60 green pixels returned along its top and bottom.

Source files line-source.png and line-damaged-cutout.png.

Download the brush parameters, original images and reproduction script.

Check both sides of the break

Starting cutout with a gap in a tan lineStarting gap
The center of the gap is a thinner tan line1 px brush
Uniform tan line with the gap restored3 px brush
Tan line with thin green bands above and below the repaired segment5 px brush
Actual outputs from the downloadable fixture. The dark blue canvas makes the restored green bands visible.

We built a three-pixel line and removed a 30-pixel section from its middle. The script copied original pixels back through a hard, rectangular brush along the exact same path in each run. It counted opaque pixels inside the gap and outside the intended line. The one-pixel brush restored one row of the gap. The five-pixel brush also picked up the rows above and below the line, adding 30 green pixels on either side. The middle setting matched the line width on this fixture.

Use the undamaged part of your own line to judge brush width. Start with a short stroke across one break and inspect the result against a contrasting background. If the line comes back thinner than its neighbors, widen the stroke slightly. If background pixels return, undo, use a narrower stroke, or clean the sides with Erase before moving to the next gap. The experiment models a hard brush on a straight line. Real editors may use soft brush edges, and this test does not measure AI detection.

Picsart documents manual Erase and Restore for fine details after automatic background removal. Our results come from the supplied pixel-level test. Picsart's background removal tutorial