Invert Image Colors
Invert the colours of an image to produce a photographic negative, or invert only the red, green or blue channel to shift the colour cast instead. A strength slider blends between the original and the negative — at 50% every pixel lands on flat mid-grey, the exact midpoint between the two. Transparency is never inverted, so a PNG with a transparent background keeps it. Everything runs locally in your browser.
At 50% every pixel lands on flat mid-grey — the halfway point between an image and its negative.
Inverting one or two channels shifts the colours instead of producing a true negative. Transparency is never inverted.
Frequently asked questions
What does inverting an image do?
Inverting replaces every colour with its opposite — a channel value of 30 becomes 225 — which turns a photo into the negative you would see on a strip of film.
Why does 50% strength produce a flat grey image?
Blending halfway between a value and its inverse always lands on the midpoint, and the midpoint of any value and its opposite is 128, so every pixel converges on the same mid-grey.
What happens if I invert only one channel?
Inverting a single channel shifts the colour balance rather than producing a true negative — inverting only red, for example, turns blues into oranges while leaving the green channel untouched.
Does inverting affect transparent areas?
Transparency is left alone: only the red, green and blue values are inverted, so a transparent background stays transparent instead of turning opaque.
Is inverting an image reversible?
Inverting at full strength twice returns the original values exactly, so the operation is lossless in itself — though re-encoding to JPEG in between will add its own compression loss.
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