Image Adjustment Online – Edit Light and Colour

How to Adjust an Image Online

1. Upload a PNG, JPG, JPEG or WebP image.
2. Correct overall light with Exposure and Gamma.
3. Fine-tune Brightness and Contrast.
4. Correct colour using Temperature and Tint.
5. Adjust Saturation, Vibrance and Hue.
6. Apply Clarity, Blur, Grayscale, Sepia or Opacity if needed.
7. Compare the result with the original.
8. Choose an output format and download.

Exposure, Gamma and Brightness

Exposure multiplies image luminance and is useful when the whole photograph is too dark or too light. Gamma applies a non-linear correction that primarily changes midtones. Brightness adds a final lightness adjustment and is best used in smaller amounts after exposure and gamma are set.

Contrast and Clarity

Contrast expands or reduces the global difference between light and dark values. Clarity changes local contrast around nearby pixels, making texture and edges appear stronger or softer without acting exactly like global contrast. Excessive values can create halos, noise or harsh skin texture.

Temperature and Tint

Temperature moves colour balance between cooler blue and warmer amber tones. Tint moves the balance between magenta and green. These controls are more appropriate for colour casts than simply increasing saturation.

Saturation and Vibrance

Saturation changes the strength of all colours. Vibrance gives more emphasis to colours that are currently less saturated, which generally produces a more restrained result. Skin tones can still become unnatural when either control is pushed too far.

Hue, Grayscale and Sepia

Hue rotates colours around the colour wheel. Grayscale blends the image toward luminance-based monochrome, while Sepia blends toward warm brown historical tones. These are creative transformations rather than corrections for poor exposure.

Blur, Opacity and Creative Effects

Blur softens detail by averaging nearby pixels. Opacity changes the alpha channel and can create transparency in PNG or WebP output. JPG cannot store transparency, so transparent areas are placed over white during JPG export.

Use Adjustments in the Right Order

Begin with exposure, then correct gamma and brightness. Set contrast before saturation because added contrast can make colours appear stronger. Correct temperature and tint before creative colour shifts, and apply clarity or blur last.

JPEG Quality and Repeated Editing

JPEG uses lossy compression. Repeatedly exporting and reopening a JPEG can discard more detail each time. Make all changes in one session, export once, and keep the original. PNG is lossless but often larger, while WebP offers efficient compression for modern websites.

Private Browser Processing

The browser reads the image into memory, renders a scaled preview, and processes the original pixel dimensions during download. Temporary local object URLs are released when replaced or after the page closes.

Common Uses for Image Adjustment

• Correct a dark or bright photograph.
• Improve product images for an online store.
• Balance warm or cool colour casts.
• Prepare photographs for social media.
• Create monochrome or sepia versions.
• Improve contrast and local detail.
• Soften an image with blur.
• Export transparent PNG or WebP results.

Image Adjustment Specifications