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How-to GuidePhoto editing≈ 1 minute · no install

How to Brighten a Dark Photo

Underexposure is the most common photo fault — backlit subjects, dusk shots, tiny phone sensors. A little brightness recovers the mood without the muddy shadows. The key is lifting just enough that blacks stay black. Here is the controlled way.

The short version

Follow the steps below with the free Change Image Brightness tool — it runs entirely in your browser, needs no upload, account or watermark, and finishes in about a minute.

Step by step

1
Load the photo

Drop it onto the brightness tool; up to 30 at once for a set.

2
Raise brightness slowly

Drag from 100% upward and watch the shadows fill — stop before highlights blow out.

3
Pair with contrast

A brightness lift often flattens the image; a small contrast bump restores punch.

4
Export at full resolution

The bake keeps original pixels; nothing is downscaled.

Open the Change Image Brightness toolFree · unlimited · runs in your browser

Pro tips & common mistakes

  • Brighten then check the histogram-worthy spots — faces should not go chalky.
  • For backlit faces, a brightness lift plus a gentle shadow opening beats a global boost.
  • Do the same lift across a batch for a consistent look.

Related guides

How to Change Image Contrast for Punchy PhotosHow-to guideHow to Sharpen a Blurry or Soft PhotoHow-to guideHow to Add Warm Tone to a PhotoHow-to guide

Frequently asked questions

How do I brighten a dark image free?
Use the brightness tool, raise the slider until shadows read, and export — all in your browser, no upload.
Why does it look washed out?
You over-brightened; pull back and add a touch of contrast to restore depth.
Can I brighten just part of a photo?
This is a global tool — for one area, a levels/mask editor is needed; for whole frames this is faster.