Brightness & Contrast Adjuster
Adjust brightness and contrast together, in one pass, with a live preview.
Processed entirely in your browser. Your image is never uploaded to a server.
- Both sliders in one place, one live preview.
- One re-encode instead of two — better for a JPEG, where every re-save loses a little quality.
- Keeps the original resolution and format.
- Runs in your browser.
Why this is private
- Processed entirely in your browser. Your image is never uploaded to a server.
- Open your browser's DevTools → Network tab while using this tool — you won't see a request carrying your input, because it never leaves your device.
- Nothing you enter is uploaded to a server or shared with us — the processing happens entirely on your device.
Overview
Adjusts brightness and contrast together with two sliders and one live preview, so a flat, underexposed photo — which almost always needs both — can be fixed in a single pass instead of two separate downloads and re-uploads.
How to use it
- 1Add an image.
- 2Drag the brightness and contrast sliders to taste.
- 3Download the result.
Frequently asked questions
What people use it for
Fix a flat, underexposed photo in one stepMost dim, washed-out shots need both a brightness lift and a contrast boost — do both without a round trip through two tools.
Rescue an indoor or low-light photoBrighten the shot and add contrast back so it doesn't look grey and flat.
Punch up a scan or document photoLift a dim scan and add contrast so text and lines read cleanly.
Related guides
- How to resize a photo and signature for online formsApplication portals want the photo and signature at exact pixel sizes and tiny file sizes. Here's how to hit both without an app.
- How to compress images for the web without them looking badWhy images make pages slow, how much quality you can drop before anyone notices, and a repeatable way to hit a size target.
- How to resize an image without losing qualityWhat 'without losing quality' really means when you resize, why enlarging is different from shrinking, and how to keep proportions intact.
- JPG, PNG or WebP: which image format should you use?A practical guide to picking an image format — what each one is good and bad at, and when to convert.
Related tools
All image toolsBrightness AdjusterBrighten or darken an image with a live preview.Contrast AdjusterIncrease or reduce image contrast with a live preview.Saturation AdjusterBoost or mute image colour with a live preview.Image FiltersApply photo filters — vintage, warm, cool, fade and more — with adjustable intensity.
Ready to use Brightness & Contrast Adjuster?
Brightness & Contrast Adjuster