Free, runs entirely in your browser — no sign-up, no file upload to a server.
What does Brightness & Contrast do?
It lets you adjust an image's brightness, contrast, saturation, and sharpness with live sliders and a real-time preview.
How do I use it?
Drop an image, adjust the sliders until the preview looks right, then download the edited image.
Where is my image processed?
Entirely in your browser using Canvas-based pixel adjustments — nothing is uploaded.
What should I do if the preview doesn't update?
Reset the sliders to their defaults and re-adjust; if that doesn't help, try reloading the image.
How do I report a problem or request a feature for this tool?
Use the Contact / Feedback page — select "Brightness & Contrast" as the related tool so we know exactly which tool you mean, then describe the bug or the feature you'd like to see.