Is the Image Brightness free to use?

Yes. The Image Brightness is free and works without creating an account.

Are my files uploaded to a server?

No. The Image Brightness runs entirely inside your web browser using built-in browser technology, so your files never leave your device.

Is there a file size limit?

Files up to 50 MB are supported. Very large images (over 64 megapixels) are rejected to keep your browser responsive.

Which file formats are supported?

Input: JPG, PNG, WEBP, AVIF, BMP. Output: JPG, PNG, WEBP. File types are verified from the file contents, not just the extension.

Does it work on phones and tablets?

Yes. It works in modern mobile browsers on Android and iOS as well as on desktop.

Change Image Brightness

Lighten underexposed photos or darken bright ones with a precise brightness adjustment.

Input:: JPG, PNG, WEBP, AVIF, BMP
Output:: JPG, PNG, WEBP
Max size:: 50 MB
Runs:: In your browser (no upload)

What the Image Brightness does

Brighten dark photos or darken overexposed ones with a single slider, and apply the same adjustment to a batch of images.

Options

Brightness from −100 to +100.

How to use the Image Brightness

1
Drag your JPG, PNG, WEBP, AVIF, BMP file into the upload area, or click it to browse your device.
2
Adjust the options to suit your needs — the defaults work well for most files.
3
Click “Run Image Brightness” to start processing.
4
Preview the result, then download it. Batch results can be downloaded together as a ZIP.

Supported formats

JPG (JPEG) is a lossy format ideal for photographs. It has no transparency and is supported everywhere. More about the JPEG / JPG format.
PNG is a lossless format that supports full transparency. Best for screenshots, logos and graphics with sharp edges. More about the PNG format.
WebP is a modern format from Google supporting lossy and lossless compression plus transparency, typically 25–35% smaller than JPG. More about the WebP format.
AVIF is a next-generation format based on the AV1 codec, offering excellent compression and HDR support. More about the AVIF format.
BMP is an uncompressed Windows bitmap format. Files are large and rarely needed on the web.

Frequently asked questions

Image Resizer

Resize images to exact pixel dimensions or a percentage, with optional aspect-ratio locking.

Image Cropper

Crop an image to an exact region or to a centered aspect ratio such as 1:1, 16:9 or 4:5.

Image Compressor

Reduce image file size with adjustable quality and optional maximum dimensions, and see the savings.

Image Converter

Convert any common image format to JPG, PNG or WebP in a single step.

Image Rotator

Rotate an image by 90, 180 or 270 degrees, or by any custom angle with a chosen background.

Image Flipper

Mirror an image horizontally, vertically or both.