How to use it
- Choose or drop a picture.
- Set the RGB split in pixels.
- Set how many torn bands there are and how far they may shift.
- Add colour noise and switch scanlines on or off.
- Try a few Variant numbers until the bands fall where you like, then download.
How it works
The effects are applied in this order:
- RGB split: for each pixel, red is taken from the pixel shift places to the left and blue from shift places to the right; past the edge the edge pixel repeats.
- Torn bands: each band of rows is rotated sideways by its own random offset between −shift and +shift.
- Colour noise: a separate random value for red, green and blue of every pixel; at 100 % it reaches about ±64 levels.
- Scanlines: every second row is darkened to 75 %.
Distances are in pixels of the saved file. The preview is smaller, so they are scaled with it.
Example
Take a row of four pixels whose red values are 10, 20, 30 and 40, with a split of 1 pixel. Red moves right: the row becomes 10, 10, 20, 30 (the first pixel repeats the edge). If blue was 1, 2, 3, 4 it moves left and becomes 2, 3, 4, 4.
A band with a shift of +1 turns the row 5, 6, 7, 8 into 8, 5, 6, 7. A scanline turns a value of 200 into 150.
Tips
- Small splits (3–10 px) read as “vintage video”; large ones (30 px and more) as heavy glitch art.
- Leave the number of bands low (5–10) on portraits so the face stays recognisable.
- Scanlines look best when the picture is shown at 100 %; scaled down they may form moiré patterns.