Adjust Brightness
Brighten dark photos or darken overexposed images. Drag to adjust, see instant p...Brighten dark photos or darken overexposed images. Drag to adjust, see instant preview. Free, private, no upload.
What You Can Do
Why Use Adjust Brightness?
Drag to Adjust
Slide from -100 (darker) to +100 (brighter). The gradient track shows you the full range visually.
Instant Preview
See brightness changes in real-time as you drag. No waiting, no button clicks needed.
Nothing Uploaded
Your photos never leave your device. Everything runs in your browser using Canvas API.
5 Quick Presets
Tap Darker, Slight Dark, Original, Slight Bright, or Brighter for instant common adjustments.
Side-by-Side Compare
See original and adjusted thumbnails together. Know exactly what changed.
Works on Mobile
Fully responsive interface. Floating download button stays accessible while you adjust.
Popular Uses
Dark Indoor Photos
Brighten photos taken without flash or in dim rooms.
Overexposed Outdoor Shots
Tone down photos taken in harsh sunlight.
Scanned Documents
Lighten dark scans or darken faded documents.
Screenshots
Adjust screenshot brightness for better readability.
How It Works
Upload Your Photo
Drag an image onto the upload area or tap to browse. Works with PNG, JPG, GIF, WebP, and most formats.
Drag the Brightness Slider
Move left to darken, right to brighten. Use presets for quick adjustments or +10/-10 buttons for fine control.
Download Your Result
Hit Download to save as PNG. The filename includes your brightness value (e.g., photo-brightness+30.png).
Quick Tips
Start Small
Begin with +20 or -20 and adjust from there. Small changes often make a big difference.
Use the Compare Panel
Glance at the original thumbnail while adjusting. Easy to lose perspective on how much you've changed.
Avoid Extremes
Values beyond ±60 often lose detail. If you need more, your photo may need professional editing.