Change image brightness | Enhance Your Images Instantly

Adjust image brightness online by uploading your photo and using the slider. Ideal for social media, presentations, and personal projects.

How Do I Change Image Brightness?

To change image brightness, upload your photo and drag a single slider to brighten or darken it, often alongside contrast. This is the fastest way to rescue under-exposed or over-exposed shots and bring out hidden detail. The tool is free, runs online in your browser, and needs no software install or sign-up.
In your browser Updated 06/2026

Supports: JPG, PNG, GIF, WEBP, ICO, BMP
Max file size: 5MB

How Do I Change Image Brightness?

To change image brightness, upload your photo and drag a single slider to brighten or darken it, often alongside contrast. This is the fastest way to rescue under-exposed or over-exposed shots and bring out hidden detail. The tool is free, runs online in your browser, and needs no software install or sign-up.

When to Adjust Brightness

Problem Fix
Photo too dark (underexposed) Increase brightness
Photo too bright (overexposed) Decrease brightness
Flat or dull image Raise contrast as well as brightness
Backlit subject in shadow Brighten to lift the shadows
Scanned document hard to read Brighten for cleaner, more readable text
Common brightness problems and how to fix them with a simple slider.

How to Adjust Image Brightness

Upload your image by clicking the button or dragging a file into the box.

Drag the brightness slider left to darken or right to brighten the photo.

Click "Apply Brightness" to render the adjusted image in the preview.

Download your edited image instantly — no sign-up or watermark.

Uses & Applications

Fix Dark Photos

Enhance underexposed images and reveal hidden details in dark areas. Perfect for photos taken in low-light conditions.

Mood Enhancement

Create dramatic effects by adjusting brightness levels. Ideal for artistic photography and setting specific moods in images.

Document Clarity

Improve readability of scanned documents and old photos by optimizing brightness levels for better contrast.

Social Media Ready

Quick brightness adjustments to make your photos stand out on social media platforms and professional profiles.

Frequently Asked Questions

You can adjust brightness from -100% (darker) to +100% (brighter), with 0% being the original brightness. The slider lets you fine-tune to get the perfect level for your image.

The tool preserves your image quality while adjusting brightness. For best results, use high-resolution source images. The output maintains the original format and resolution.

We support JPG, PNG, GIF, WEBP, ICO, and BMP formats. Maximum file size is 5MB. Your adjusted image can be downloaded in the same format as uploaded.