Image lightness adjuster
World's simplest image toolFree online image lightness adjuster. Just drag and drop your image here and it will be automatically lighter or darker. In the input preview you can customize the lightness change area and in the options you can specify the lightness parameter. Created by engineers from team Browserling.
A link to this tool, including input, options and all chained tools.
Click here to select an image from your device, press Ctrl+V to use an image from your clipboard, drag and drop a file from desktop, or load an image from any example below.
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What is a image lightness adjuster?
learn more about this toolThis tool adjusts the lightness of a selected area in an image. Lightness is a measure of how light or dark a color is. It is one of the three components of the HSL color model, along with hue and saturation. To adjust the lightness of an image, you need to load it in, and select the area of the image that you want to adjust. You can do this by adjusting a rectangle in the input preview area, or by specifying the exact parameters of the lightness area using numerical values for the left offset, top offset, width, and height of the area. Then, in the lightness parameter, you can specify the amount of lightness to be applied to the selected area. A value greater than 100% will make the area lighter, and a value less than 100% will make it darker. The output image format can be selected in the options. This can be a PNG, JPEG, or WebP image. Image-abulous!
Image lightness adjuster examples
Click to useSubtle Lightness Reduction
This example slightly reduces the lightness of an image of vases with blooming flowers beautifully illuminated by sunlight. By lowering the lightness to 92% (removing 8% of light), it emphasizes shadows and the darker colors in the image, adding depth and contrast. (Source: Pexels.)
Required options
Specify the amount of lightness
to apply to the selected area.
(More than 100% – more light,
less than 100% – less light.)
to apply to the selected area.
(More than 100% – more light,
less than 100% – less light.)
Left offset.
Top offset.
Width.
Height.
Create a Lighting Effect in a Forest
In this example, we process an image of a green forest with sunlight streaming through. We select a rectangular area in the center of the image, offset by 60 pixels from all sides, and increase the lightness of this area to 120%. This creates a captivating lighting effect with a striking contrast between the light center and the darker forest surroundings. (Source: Pexels.)
Required options
Specify the amount of lightness
to apply to the selected area.
(More than 100% – more light,
less than 100% – less light.)
to apply to the selected area.
(More than 100% – more light,
less than 100% – less light.)
Left offset.
Top offset.
Width.
Height.
Ocean Horizon Darkening
In this example, we use the program to darken the ocean in the image. We select the lower half of the image below the horizon and reduce its lightness to 80%. As a result, the ocean appears deeper and bluer, mirroring real-life conditions. Meanwhile, the sky above the horizon remains light, creating a striking contrast between the sky and the sea. (Source: Pexels.)
Required options
Specify the amount of lightness
to apply to the selected area.
(More than 100% – more light,
less than 100% – less light.)
to apply to the selected area.
(More than 100% – more light,
less than 100% – less light.)
Left offset.
Top offset.
Width.
Height.
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We're Browserling — a friendly and fun cross-browser testing company powered by alien technology. At Browserling we love to make people's lives easier, so we created this collection of image editing tools. Our tools have the simplest user interface that doesn't require advanced computer skills and they are used by millions of people every month. Our image tools are actually powered by our web developer tools that we created over the last couple of years. Check them out!
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