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Home › Image Tools › Brightness & Contrast Adjuster

Adjust image brightness and contrast online for free. Upload a photo, fine-tune brightness (−100 to +100) and contrast (−100 to +100) with real-time canvas preview, compare with the original, and download the edited image at full resolution — all processed locally in your browser with zero uploads.

Features

  • ☀️ Brightness Control — Brighten or darken any photo with a precise −100 to +100 slider.
  • 🎚️ Contrast Control — Fine-tune contrast from flat to punchy with a single slider.
  • ⚡ Real-Time Preview — Every slider move re-renders instantly on canvas with debounce.
  • 👁️ Compare Original — Hold the Original button (or Space) to flip back to the source image.
  • ⬇️ Full-Resolution Export — Download the adjusted image at full size, original format, no quality loss.

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