Are NanoTools completely free to use?

Yes, all basic tools on NanoTools are completely free to use with no registration required. We offer premium features for power users.

Is my data secure when using NanoTools?

Your files are processed securely and are automatically deleted after processing. We do not store your files or data on our servers.

No installation required. All tools work directly in your browser on any device - computer, tablet, or smartphone.

We support a wide range of formats including PDF, JPG, PNG, WebP, GIF, JSON, XML, CSV, and many more depending on the tool.

Adjust image brightness online for free. Make photos brighter or darker. Control brightness levels precisely.

Drop an image here or click to browse

image/* • Max 50MB

1

Select image to adjust

2

Move slider to change brightness

3

See changes in real-time

4

Save adjusted image

Brightness can be adjusted from -100% (very dark) to +100% (very bright).

Extreme brightness may reduce color saturation. Use contrast adjustment for better balance.

This tool adjusts overall brightness. Use advanced editors for selective adjustments.

Moderate adjustments preserve quality. Extreme changes may introduce artifacts.