Adjust Image
Tone, exposure, and raster-mode settings for an image layer. Live before/after preview.
The Adjust Image dialog gives you photo-app-style controls (brightness, contrast, gamma, etc.) for a raster image, plus the image-layer raster settings (mode, line interval, negative). Everything previews in real time.
When it opens
Menu: Image → Adjust Image (or Alt+I), with a raster image selected. Disabled for non-raster objects.
What you see
Two side-by-side preview canvases, Original on the left, Processed on the right, with the controls below.
The controls are split into:
Layer raster settings (applies to the layer hosting this image)
| Field | Type | Notes |
|---|---|---|
| Mode | select | Grayscale / Threshold / Floyd-Steinberg / Ordered Dither / Stucki / Jarvis / Sierra / Atkinson / Halftone / Newsprint / Sketch. See Dithering algorithms. |
| Negative Image | toggle | Invert before processing. |
| Line Interval | mm | Equivalent DPI is auto-displayed. |
| DPI | number | Equivalent line interval is auto-displayed. |
Object-level adjustments (applies to this specific image)
| Field | Type | Notes |
|---|---|---|
| Brightness | slider + stepper | |
| Contrast | slider + stepper | |
| Gamma | slider + stepper | |
| Saturation | slider + stepper | Only meaningful for color images. |
| Sharpen | slider + stepper | |
| Threshold | slider | Only shown when Mode is Threshold. |
| Invert | toggle | Per-object inversion (separate from layer-level Negative Image). |
| Edge Enhance | toggle | Reveals Enhance Radius, Amount, Denoise when on. |
Buttons
- Reset All: clear both object and layer adjustments to defaults.
- Preset dropdown with Save / Delete: save the current adjustment combo as a named preset for reuse.
- Cancel: dismiss without saving.
- OK: apply.
Notes
- The dialog is movable and resizable. Drag the title bar and corner.
- Both preview canvases support zoom (wheel) and pan (drag).
- Preview is debounced, change a slider and the preview updates a moment later.
- Applies the project adjustments and the layer raster settings atomically on OK.
- An "Invert Display" toggle on the processed preview only affects what you see in the dialog, not the saved adjustment.
Related
- Cuts / Layers panel: pick the image's layer
- Trace Image: convert to vector instead of adjusting raster
- Dithering algorithms
- Engrave a photo guide