Brightness Adjuster
Drop an image and adjust the brightness with a live preview. Undo, redo, reset, and download — all in your browser.
1. Image
Canvas · localDrop an image here
or click to browse · or paste with Ctrl/Cmd + V
2. Preview & export
—About Brightness Adjuster
The Brightness Adjuster changes an image’s brightness with a live preview, plus undo, redo, and reset. It is for quickly fixing an image that is too dark or too light.
A small brightness fix should not need a full editor. Adjusting it locally is immediate, reversible while you work, and keeps the image private.
Step by step
- Drop an image into the tool — Brightness Adjuster.
- Adjust the brightness with the slider.
- Watch the live preview update.
- Use undo, redo, or reset as needed.
- Download the adjusted image.
What it offers
- Brightness slider
- Live preview — Brightness Adjuster
- Undo, redo, and reset
- Runs in the browser — Brightness Adjuster
Where it helps
- Lightening an underexposed photo
- Toning down an image that is too bright
- Making a quick exposure fix without an editor
- Preparing an image for consistent display
Tips for best results
- Make small adjustments to avoid washing out highlights or crushing shadows.
- If brightness alone does not help, try the contrast adjuster instead.
- Work on a copy so the original stays intact.
Pitfalls to watch for
- Pushing brightness so far that highlights or shadows lose all detail.
- Adjusting brightness when the real problem is contrast.
- Editing the only copy instead of working on a duplicate.
Why people use it
Quick fix
Correct exposure in seconds.
Reversible
Undo and redo while you work.
Private
The image is adjusted on your device.
Live
See the effect as you slide.
Common questions
This runs entirely in your browser
No file or text you enter here is uploaded. Encoding and decoding happen on your device using native browser APIs — close the tab and nothing remains on a server.