Brighten dark phone photos
Lift dim indoor or evening images so product details, faces, or room scenes are easier to see before posting or sharing them.
💡
Image Brightness Adjuster
Adjust JPG, PNG, and WebP image brightness online with live preview, export options, and private in-browser processing.
Adjust image brightness in your browser
Upload a JPG, PNG, or WebP image, brighten or darken it with a live preview, and download the adjusted file without sending it to a server.
BrightnessLive previewNo upload
Preview
Original
Upload an image to preview it here.
Adjusted output
Your adjusted image preview appears here.
Original size
0 B
Output size
0 B
Size change
0.0%
Brightness controls
Use presets for fast adjustments or fine-tune the exact brightness level with the slider and numeric field.
%
PNG export uses lossless output and ignores the quality slider.
What this brightness tool does
The Image Brightness Adjuster lets you brighten or darken JPG, PNG, and WebP images directly in your browser. It is useful when photos are too dim, screenshots are hard to read, or design assets need a lighter or darker treatment before publishing.
You can quickly test preset values or dial in a precise brightness percentage with the slider. After adjusting exposure, you can continue with the Image Cropper to refine framing or the Image Resizer & Compressor to optimize the final file.
Everything happens locally in your browser for speed and privacy. No server upload is required to preview, brighten, darken, or export the result.
How it works
1. Upload or drag in a JPG, PNG, or WebP image.
2. Move the brightness slider below 100% to darken or above 100% to brighten the image.
3. Preview the adjusted result instantly and choose JPG, PNG, or WebP export.
4. Download the final file or continue with crop, rotate, flip, resize, and compression tools.
Examples and common use cases
Use the tool for quick exposure corrections before sharing, compressing, or converting your image.
Fix screenshots and scanned pages
Increase brightness on screenshots, receipts, or document scans when the original export looks muddy on mobile and laptop screens.
Tone down overexposed graphics
Reduce brightness for hero images, banners, and social assets when highlights look too harsh against text or UI elements.
FAQ
Does this brightness tool upload my image?
No. Brightness adjustments happen locally in your browser, so your image stays on your device while you preview and export the result.
Can I brighten and darken JPG, PNG, and WebP files?
Yes. You can move the brightness slider below 100% to darken the image or above 100% to brighten it, then export as JPG, PNG, or WebP.
Will brightness adjustment change image dimensions?
No. Brightness changes affect the visible lightness of the pixels but keep the same width and height as the original image.
What happens to transparent PNG or WebP files if I export as JPG?
JPG does not support transparency, so transparent areas are flattened onto a white background during export.
Related tools
Continue your image editing workflow with other internal tools after the brightness adjustment.
✂️
Image Cropper
Crop the image after brightness correction when you need a tighter composition for thumbnails, products, or social posts.
🔄
Image Rotator
Rotate the file after brightness adjustment when the image also needs orientation correction for web or print use.
🪞
Image Flipper
Mirror the image after exposure changes when selfies or layout graphics face the wrong direction.
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Image Resizer & Compressor
Resize and optimize the brightened image before uploading it to sites, apps, or marketplaces.
📦
Image Compressor
Compress the adjusted image further when file-size limits or page speed are still important after editing.
🖼️
JPG to PNG Converter
Move a brightened JPG into PNG format when you want a lossless working version for the next edit step.
Explore This Tool in Context
Image Brightness Adjuster is part of the Image Editing collection. If you want a broader view of similar workflows, open the Image Editing category page or browse all QuickTools categories.
Common next steps after this tool include Image Cropper, Image Rotator and Image Flipper.
More in Image Editing
View category hub →Image Cropper
Crop JPG, PNG, and WebP images online with aspect ratio presets, live preview, and private in-browser processing.
Open tool →
Image Rotator
Rotate JPG, PNG, and WebP images online with live preview, custom angles, and private in-browser processing.
Open tool →
Image Flipper
Flip JPG, PNG, and WebP images online horizontally or vertically with live preview and private in-browser processing.
Open tool →
Image Contrast Adjuster
Adjust JPG, PNG, and WebP image contrast online with live preview, export options, and private in-browser processing.
Open tool →
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