Brightness and Contrast

Fix dark, washed-out or dull photos by adjusting brightness, contrast and saturation with live sliders — free and private. Your photo is edited in your browser and never uploaded.

🔆 Drop your photo here

or click to browse — JPG, PNG, WebP, GIF, BMP · stays on your device

How to adjust brightness and contrast online

  1. Upload your photo. Drag and drop a JPG, PNG, WebP, GIF or BMP file into the box above, or click it to browse your device.
  2. Move the sliders. Adjust brightness to lighten or darken, contrast to deepen or flatten tones, and saturation to boost or mute colors. The preview updates as you drag.
  3. Download the result. Pick JPG, PNG or WebP and press Download — the edit is applied at the original full resolution.

About this tool

This free brightness and contrast editor rescues photos that came out too dark, overexposed or flat. Increase brightness to recover an underexposed indoor shot, add contrast to make a hazy landscape pop, or raise saturation for richer, more vivid colors — no Photoshop needed. The three adjustments use the same standard formulas as CSS and SVG image filters, so results match what professional web tools produce. Slide saturation all the way down to −100 for an instant black-and-white conversion.

All processing happens locally in your browser on the HTML5 canvas: the photo never leaves your device, making the tool safe for personal pictures and confidential screenshots. There are no watermarks, sign-ups or limits, and the downloaded image keeps the exact original dimensions. For one-click styled looks, try our Photo Filters tool.

Frequently asked questions

What do the slider values mean?

0 means no change. Brightness ±100 multiplies pixel lightness between 0% and 200%, contrast ±100 scales tones around middle gray from 0% (flat gray) to 200%, and saturation ±100 goes from fully desaturated (grayscale) to double color intensity.

Can I make a photo black and white with this tool?

Yes — drag the saturation slider to −100. Combine it with a small contrast boost (+10 to +25) for a punchier monochrome look, or use the dedicated Grayscale Image tool.

Does editing reduce the image quality?

The adjustments themselves are lossless per-pixel math at full resolution. Quality is only affected by the output encoding: choose PNG for lossless output, or JPG/WebP with the quality slider at 85–95% for photos.

Why does my photo look gray after lowering contrast?

Lowering contrast pulls every tone toward middle gray — at −100 the whole image becomes one flat gray. Small negative values (−10 to −30) are usually enough to soften harsh shadows and highlights.