Brighten Image Online
Increase or decrease image brightness. Free, no signup, works in your browser.
Drag and drop your image here, or choose a file
PNG, JPG, WEBP, GIF, BMP — up to 25MB
Your images are processed entirely in your browser. Nothing is uploaded to any server.
Frequently Asked Questions
How do I brighten a dark photo?
Upload your photo and move the brightness slider to the right. The preview updates in real time. Download when you're happy with the result.
What is the difference between brightness and exposure?
Brightness uniformly shifts all pixel values lighter or darker. Exposure simulates camera settings and affects highlights, midtones, and shadows differently.
Can I fix an underexposed photo with this tool?
For mildly underexposed photos, yes. Increase brightness by 30–60 points. Severely underexposed images may need dedicated photo editing software.