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Adjust Image Brightness Online

Adjust image brightness levels

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Accepts: IMAGE/JPEG, IMAGE/PNG, IMAGE/WEBP, IMAGE/AVIF · up to 50.0 MB

Options

Ctrl/⌘+S to download

Upload an image above to enable options.

Features

  • Slider control
  • Preview
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This tool runs on your device — your files and inputs never go anywhere.

How to Use Adjust Brightness

Adjust image brightness levels No signup, and nothing gets uploaded for most use.

  1. 1

    Add your image by dragging it in or clicking the upload area.

  2. 2

    Adjust the settings — dimensions, quality, format, or crop area.

  3. 3

    Press process and let the tool render instantly, right in your browser.

  4. 4

    Download the finished image. No uploads, no account, no watermark.

Why you might like it

  • Nothing to upload — the work happens on your device.
  • Free with no signup, no watermarks, and no daily limits.
  • Works in any modern browser on any device — nothing to install.
  • Usually done in a few seconds, so it doesn't get in your way.
Try Brightness

Frequently Asked Questions

How do I brighten dark photos?

Upload your photo and move the brightness slider to the right to lift shadows and brighten underexposed shots.

Can I also darken overexposed photos?

Yes. Move the slider to the left to recover highlights in overly bright pictures.

How do I adjust image brightness?

Open the Adjust Brightness tool and add your image by dragging it in or clicking the upload area, adjust the settings, and press process. The result is generated instantly and ready to download — free, unlimited, and processed entirely in your browser so nothing is uploaded.

How do I change image brightness?

Open the Adjust Brightness tool and add your image by dragging it in or clicking the upload area, adjust the settings, and press process. The result is generated instantly and ready to download — free, unlimited, and processed entirely in your browser so nothing is uploaded.