PNG Pixel Shuffle

At the left side, upload a picture of your chonky cat. Press Shuffle. The shuffled picture will appear on the right side.
Use the picture from the right side and the provided key to unshuffle back to the original.

Key length
Change mod for

px
Use 2n to draw fractals. For scrambling pixels use different.
https://github.com/xcontcom/perfect-shuffle-cryptography
Quick Guide:
To create cool fractals:
- Uncheck "Generate new key" and enter the key 1111111111
- Check "Resize image" and set size to 1024 px (2n sizes produce fractals).
- Upload a picture of your chonky cat.
- Click "Random Modes" to explore patterns.

To scramble your image instead:
- Keep "Generate new key" checked.
- Use a size not equal to 2n (e.g., 754, 902) to avoid recognizable patterns.