Invert Image Colours

Yes, and it is the most practical use. Scan or photograph the negative on a lightbox, then invert to get a positive image. Colour negatives also carry an orange base tint that inversion turns blue, so expect to correct the colour balance afterwards — black and white negatives need no such step.

Making documents readable in the dark, since inverting a white-background scan gives light text on black. It is also useful for checking a design’s contrast structure, and for creating a negative-effect look deliberately in artwork and album covers.

The operation itself is a straightforward mathematical transform, and inverting twice returns you to the original. Any quality change comes from re-saving in a lossy format like JPG rather than from the inversion, so save as PNG if you intend to invert back and forth.

Yes, Invert Image Colours is completely free. No signup, no account, and no watermark on outputs. A Pro tier is available for 100 AI ops/day and larger file sizes.

Invert Image Colours uploads your file over an encrypted connection to our own processing server, converts it, and returns the result. The file is deleted immediately after processing and is never used for anything else. It is not sent to any third party, and we keep no copies.