What does each slider do?

Brightness makes the image lighter or darker. Contrast increases or decreases the difference between light and dark areas. Saturation controls colour intensity - 0% produces grayscale. Hue rotates all colours around the colour wheel (useful for creative effects).

Can I make a photo look more vibrant?

Yes. Increase saturation to +30-50% and contrast to +10-20% for a more vivid, punchy look. Raising brightness slightly can also help if the photo is underexposed.

How do I convert to grayscale?

Set saturation to −100%. For a dedicated grayscale tool with intensity control, see the Grayscale Image tool.

Will the adjustments affect image quality?

The adjustments are applied using CSS filter algorithms to your original image data and then re-encoded. For JPEG output, there will be a small quality loss from re-encoding - choose PNG output to avoid this.

What does each slider do?

Brightness makes the image lighter or darker. Contrast increases or decreases the difference between light and dark areas. Saturation controls colour intensity - 0% produces grayscale. Hue rotates all colours around the colour wheel (useful for creative effects).

Can I make a photo look more vibrant?

Yes. Increase saturation to +30-50% and contrast to +10-20% for a more vivid, punchy look. Raising brightness slightly can also help if the photo is underexposed.

How do I convert to grayscale?

Set saturation to −100%. For a dedicated grayscale tool with intensity control, see the Grayscale Image tool.

Will the adjustments affect image quality?

The adjustments are applied using CSS filter algorithms to your original image data and then re-encoded. For JPEG output, there will be a small quality loss from re-encoding - choose PNG output to avoid this.

Adjust Image - Brightness, Contrast, Saturation & Hue

How to use Adjust Image

1
Upload your image
Drop a JPG, PNG or WebP image onto the tool or click to select.
2
Adjust the sliders
Use the brightness, contrast, saturation and hue sliders. The thumbnail updates in real time. Each slider goes from −100% to +100% (hue: 0-360°).
3
Apply and download
Click Apply Effect to process at full resolution. A before/after comparison is shown before you download.

Quick corrections without a full editor

Most phone cameras apply automatic exposure correction that handles average conditions well but struggles with backlit subjects, mixed indoor lighting, or overcast outdoor scenes. A brightness lift of 10-20 points can recover an underexposed indoor shot. Contrast correction makes flat images taken on cloudy days look more defined and three-dimensional. These are fast, single-slider fixes that do not require loading a full image editing application.

Saturation and hue adjustments address color cast - the warm yellow tint that artificial lighting introduces to product photographs, or the cool blue shift that overcast daylight produces. Reducing the cast color's saturation slightly, or shifting hue by a few degrees, produces more neutral and accurate color without a complex color-grading workflow. For a complete desaturation, the grayscale tool offers more control over the conversion.

Adjustment order matters

Correct brightness before saturation. An underexposed image appears less saturated than it would at correct exposure, so adjusting color before fixing brightness often leads to oversaturation once brightness is corrected. Set brightness first, then contrast, then saturation. This sequence avoids having to revisit earlier settings after color changes. Once you are happy with the tonal balance, sharpening the result can restore edge definition if the original was slightly soft.

Frequently Asked Questions

Related Tools

Grayscale Image

Convert images to black and white or partial desaturation

Blur Image

Apply Gaussian blur to an entire image or a selected region

Sharpen Image

Sharpen blurry images using an unsharp mask convolution filter

Invert Colors

Invert the colors of any image to create a negative effect