Adjust Image Brightness and Contrast Online
Adjust an image’s brightness and contrast and download the result, in your browser.
100% local processing. Nothing is uploaded.
🔒 100% client-side — no data sent
Adjust the brightness and contrast of an image online, then download the corrected version. Processing is 100% in your browser: no image is sent to a server, your photos stay private. Perfect for fixing a photo that is too dark or too flat without installing any software.
What is it for?
- ▸ Brighten a photo taken in a too-dark environment
- ▸ Boost the contrast of a screenshot to make it readable
- ▸ Even out the brightness across a series of product visuals
- ▸ Quickly improve an image before adding it to a document
FAQ
How do I brighten a too-dark photo online?
Upload the photo, then raise the brightness slider until you get the look you want, and download the corrected result.
What is the difference between brightness and contrast?
Brightness lightens or darkens the whole image uniformly, while contrast widens the gap between the light and dark areas.
Does the tool reduce the image quality?
No, only brightness and contrast are changed. The original resolution is preserved in the exported file.