One image or a batch
Source images
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.
Image Brightness
Lighten or darken the image.
Open this toolBrightness 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
Brightness adjustment
Tool inputs
Allowed range: -255 to 255
Download format
Tool inputs
PNG, preserves alpha, JPEG, flattens alpha, WebP, server support needed
Quality
Tool inputs
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: 2026-10-04T18:22:34+00:00. This profile describes the tool; use its page to run it.
Markdown profile