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Image Colour Inverter

Flip an image to a negative, or turn a light UI screenshot into dark mode while keeping every coloured accent recognisable. Hue rotation, brightness, contrast and saturation included — all in your browser.

Drag and drop an image here, or

About this tool

Every pixel is converted through HSL, so “luminance-only” inversion flips lightness (L → 1 − L) while leaving hue and saturation untouched — that is what keeps coloured buttons and charts recognisable when you turn a light screenshot into dark mode. Applying the same inversion again gives the original image back.

Hue rotation, then saturation, then brightness and contrast are applied in that order, and transparency is preserved. Processing is capped at 1100px for the live preview and 3000px on the long side for the export so a very large photo cannot lock up the tab. Everything runs locally in your browser.

  • 100% free — no account needed
  • Runs in your browser
  • Nothing is uploaded

Frequently asked questions

Is Image Colour Inverter really free?

Yes. Image Colour Inverter is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.

Does Image Colour Inverter upload my data?

No. Image Colour Inverter runs entirely inside your browser, so anything you type, paste, or open stays on your own device.

Do I need to sign up or install anything?

Neither. There is no account and nothing to download — open the page and Image Colour Inverter is ready to use on desktop or mobile.

Does Image Colour Inverter work offline?

Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.

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