Invert Alpha Channel
Invert the alpha channel of a PNG image. Transparent pixels become opaque, opaque become transparent. Free online alpha
How to Use Invert Alpha Channel
- Upload PNG: Select a PNG image to invert its transparency.
- Invert alpha: Click Invert Alpha to flip all alpha values. Transparent becomes opaque and vice versa.
- Download result: Preview the inverted transparency and download the result as a PNG.
About Invert Alpha Channel
Invert Alpha Channel flips the alpha (transparency) values of a PNG. Transparent pixels become opaque and vice versa, with semi-transparency reversed.
- Alpha Inversion: Each pixel's alpha value is set to 255 minus its original value.
- Full Reversal: Fully transparent becomes fully opaque, and vice versa.
- Instant Preview: Original and result shown side-by-side.
- Download Result: Save the inverted PNG with one click.
Useful for creating negative masks, reversing selection areas, or creative image manipulation.
Frequently Asked Questions
What does inverting the alpha channel do?
Every pixel's alpha value is flipped: alpha becomes 255 - original_alpha. Fully transparent becomes fully opaque and vice versa.
Are RGB colors affected?
No. Only the alpha channel is modified. The original RGB color values remain exactly the same.
When would I use this?
Inverting alpha is useful for creating negative masks, reversing selection areas in compositing, or creative image effects where transparency roles are swapped.