How to adjust brightness and contrast of an image online for free?
Simply upload your image, then use the brightness and contrast sliders to adjust in real-time. The changes are applied instantly so you can see the results before downloading. No registration required!
What is the difference between brightness and contrast?
Brightness controls the overall lightness or darkness of an image. Contrast controls the difference between the darkest and lightest areas. Increasing contrast makes dark areas darker and light areas lighter, creating more depth.
Does this tool work offline?
Yes! Your images never leave your device. All editing happens locally in your browser. This means 100% privacy, no upload delays, and you can use it offline after the page loads.
What image formats are supported?
We support JPG, PNG, WebP, and GIF formats. Maximum file size is 50MB. You can also export your edited image as JPG, PNG, or WebP with adjustable quality settings.
How does Auto Enhance work?
Auto Enhance analyzes your image and automatically applies optimal brightness and contrast settings to improve visibility and make your photo look its best. It's a great starting point for quick fixes.
Can I adjust quality when downloading?
Yes! For JPG and WebP formats, you can adjust the quality from 1-100%. Higher quality means larger file size. PNG format always maintains original quality with no compression.
Is this brightness and contrast tool free?
Yes, completely free! Guest users get 3 free edits. For unlimited access, sign up for free - no credit card required.
What's the best way to edit dark photos?
For dark photos, first increase brightness to lighten the image, then adjust contrast to add depth. Try Auto Enhance for a quick fix, or manually adjust brightness by +20-40 and contrast by +10-20.