# Image Brightness

Lighten or darken the image.

[Open this tool](https://whatson.pk/image-brightness-tool/)

Category: Image Preparation

Brightness adjustments can make a picture lighter or darker, but they cannot recreate missing detail.

Change the setting modestly and inspect bright and shadowed regions.

## Inputs and controls

* One image or a batch: JPEG; PNG; WebP. Static images. Up to 4 MiB per file, 12 MiB total and 4 million pixels per image. At most six source images.
* Brightness adjustment. Allowed range: -255 to 255
* Download format: PNG, preserves alpha; JPEG, flattens alpha; WebP, server support needed
* Quality. Allowed range: 1 to 100

## How to use

* Choose a static JPEG, PNG or WebP source. Check the displayed upload limits before processing.

* Set Brightness adjustment, Download format and Quality. Review the selected units and options before preparing the output.

* Select Prepare image. Inspect the resulting preview, dimensions and file size, then download the output you need.


## Why use this tool

The adjustment offers a simple tonal comparison without changing the subject's geometry.


## Before relying on the result

Compare the finished picture with its source. Pixels with lost source detail do not gain that detail through a brightness change.

## Questions

### Can it recover clipped highlights?

No. Pixels with lost source detail do not gain that detail through a brightness change.

### What should I check before using Image Brightness?

Prepare a supported source image and check Brightness adjustment, Download format and Quality. Use the exact units shown beside the controls and replace any example values with your own inputs.

Source page last modified (UTC): 2026-10-04T18:22:34+00:00

This profile describes the tool. It does not execute it or supply a professional certification.