Brightness and Contrast Tool

Fine-tune the tonal range of any photo with two intuitive sliders. Brightness adds or subtracts a constant value from every pixel; contrast scales pixels around mid-gray to widen or compress the tonal range.

When to use brightness

Use brightness to compensate for under- or overexposed photos. Push it positive to lift dark scenes; pull it negative to recover blown-out highlights. Useful for quickly normalizing camera-roll photos before posting or sending.

When to use contrast

Contrast widens the gap between dark and light pixels. Push it positive to make images crisper and more punchy. Pull it negative for softer, dreamier tones popular in editorial and lifestyle photography.

Use cases

• Normalize photos shot in tricky lighting
• Add punch to website hero images
• Soften portraits for a dreamy mood
• Pre-process scans for OCR or printing
• Quick adjustments before social posting
• Calibrate dataset images before training

Privacy

All processing happens locally in your browser using the Canvas API. Your originals never leave your device. The output is a high-quality PNG that preserves the original alpha channel.

For more advanced edits, combine this tool with our grayscale, sepia, sharpen, and posterize filters.