About the Smudge Tool
The smudge tool works like dragging a finger through wet paint: it picks up the colours where you start and pulls them along your stroke. Use it to blend a hard edge, stretch a highlight, fix a small flaw, soften hair or give a photo a painterly look. You choose the brush size, softness and strength, and you can undo any stroke or start again. The picture is saved as a full-size PNG. Everything is done in your browser, so the picture is not uploaded.
Updated October 2026
How to use the Smudge Tool
- 1Select an image or drop one on the page.
- 2Choose a brush size. Smaller brushes give finer control.
- 3Set strength: high pulls colours farther, low blends more gently.
- 4Drag across the picture in the direction you want colours to move.
- 5Undo or start over as needed, then press Download PNG.
The idea behind smudging
In painting, smudging means dragging wet paint with a finger or a cloth. The colour from one place is spread into the next. In digital editing, the brush picks up the colours under it at the start of a stroke and carries them along, leaving a smear that fades as the carried colour mixes with what it passes over.
Uses in photo editing
Retouchers use smudging to blend hard edges after a cut-out, stretch a highlight along the curve of an object, smooth a hairline and remove small, distracting marks. Artists use it to make digital paintings look hand made.
- Hard edges: short strokes along the edge, low strength
- Hair: strokes in the direction of the hair
- Highlights: drag along the curve of the shape
- Painterly effect: larger brush, long strokes
Getting a clean result
Use short strokes and lift your finger often. Long strokes carry colour farther and risk smearing into areas you did not want to change. Use a soft brush for blending and a harder one for pushing shapes.
A quick example
Imagine a pie chart you drew with a hard edge between two colours. Choose a brush about as wide as the border, strength 50, and drag across the line from one colour to the other in a few short strokes. The boundary becomes a soft gradient. Do the same along the line from the other side for a smoother blend.
Phone and computer
On a phone, use one finger; the page does not scroll while you touch the picture. On a computer, a ring shows the brush size. Pictures up to about 16 million pixels are supported.
Smudge, blur or clone?
Use smudge when you want shapes to flow in a direction, such as hair, brush marks or a stretched highlight. Use the blur tool when you simply want less detail, and the clone tool when you want an exact copy of something that is elsewhere in the picture. Mixing them works well: clone out a flaw, then smudge the edges of the repair so they melt into their surroundings.
Good to know
Smudging works on the pixels, so it cannot create detail. Heavy smudging flattens texture. Work on a copy if you want to keep the original; your original file is never changed, and Start over restores it. Smudging blends colours, and other brushes suit other edits. Use the Blur Tool for softer detail, the Brush Tool to paint, and the Clone Tool to copy one area onto another.
Features
- Pulls colours along your stroke
- Size, softness and strength controls
- Smooth, painterly blending
- Undo and Start over
- Works with mouse, finger and pen
- Nothing is uploaded
Frequently asked questions
What does the smudge tool do?
It smears the colours it starts on along the path you drag, like a finger through wet paint.
What is the difference from the blur tool?
Blur averages neighbouring pixels so detail is lost evenly. Smudge moves colour in a direction, so shapes stretch rather than just soften.
What is it used for?
Blending hard edges, stretching highlights, softening hair, fixing small flaws and creating painterly effects.
What does strength do?
A higher strength drags colour farther along the stroke before it fades. A lower strength gives a gentle blend.
Can I smudge only a small area?
Yes. Use a small brush with a soft edge and short strokes. The rest of the picture is not changed.
Is my picture uploaded?
No. It stays in your browser.