Adjust brightness and contrast
Make photos lighter, darker, punchier or more muted with three simple settings.
🔒 Everything runs in your browser. Nothing you choose or type is uploaded. How to verify
How to use it
- Choose one or more images.
- Enter brightness, contrast and saturation values between -100 and 100.
- Select Run and compare the result.
Handy for
Rescuing dark photos, brightening scans and toning down washed-out colors.
Good to know
Small changes of 5 to 15 usually look natural. Raising contrast and saturation together can make colors look harsh, so change one setting at a time.
Privacy: where the work happens
Your picture is read by your browser and processed on this page with your device’s own image tools. The result is created on your device and offered as a download. Only the page code, and any library this tool needs, is downloaded from cdnjs or jsDelivr.
Questions
What do the numbers mean?
Zero changes nothing. Positive values increase the effect and negative values reduce it.
Can I undo it?
Your original is never changed. Run again with other values.