Brighten a PNG Picture
Lift the exposure of a dark or underlit PNG image. Runs entirely in your browser, so your data never leaves your device.
Drop a file here, or click to browse
Files never leave your device
Output
The result appears here as you type.
How to use Brighten a PNG Picture
- 1. Upload the underexposed PNG. Add the PNG that came out too dark. The tool lifts brightness across every pixel rather than adjusting just the shadows or highlights individually.
- 2. Set the brighten percentage. Move the Brighten slider to choose how much exposure to add. A small percentage lifts shadows subtly while a large one can wash out an already well-lit photo.
- 3. Download the brightened PNG. Download the result once the exposure looks corrected in the preview. Reduce the percentage if bright areas start to look flat or overexposed.
When to use Brighten a PNG Picture
Brighten a PNG Picture lifts the exposure of a dark or underlit image by a chosen percentage, a quick fix for photos shot in poor lighting without opening a full photo editor.
- Fixing a dim indoor photo. A photo taken indoors under weak lighting came out too dark to make out important detail. Lifting the exposure brings the scene back into a usable range.
- Salvaging a backlit shot. A photo taken with the light source behind the subject leaves the foreground too dark. Brightening the whole image helps recover some of the lost detail.
- Matching brightness across a photo set. A batch of photos shot under inconsistent lighting needs a quick, uniform brightness boost applied to the darkest ones so the set looks more consistent.
Examples
Fix a dark shot
Input
photo.png + 20%
Output
photo.png with lifted exposure
About the Brighten a PNG Picture tool
Brighten a PNG Picture does its work locally, right in the browser. Lift the exposure of a dark or underlit PNG image. There is no upload step, no queue and no account, and your data never travels over the network.
It belongs to the PNG Tools collection on EditSafely, a set of 108 small, focused PNG utilities that share the same instant, private workspace.
You can shape the output with the Brighten (%) setting, and the result refreshes the moment you change it. The finished file is put together in browser memory and saved with the Download button, so it never touches a server on the way to your disk. A worked example further down the page shows exactly what the tool produces for a real input.
Running locally also makes the tool fast and dependable: results appear as you type or drop a file, there is no server outage that can take it down mid-task, and confidential data can be processed without a second thought.
Frequently asked questions
Is Brighten a PNG Picture free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Are my files uploaded to a server?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
Which files does Brighten a PNG Picture accept?
It accepts PNG images. There is no file size cap imposed by a server; very large files are limited only by your device's memory.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I save the output?
Click the Download button once the result is ready. The file is built in your browser's memory and handed straight to your downloads folder, without passing through a server.