Image Adjuster

Adjust Image Online

Adjust brightness, contrast, saturation, hue, temperature, sharpness and more. Real-time preview with 10 powerful adjustments. Nothing leaves your device.

10+

Adjustments

Live

Real-time Preview

Full

Color Control

Free

No Uploads

Drop any image to start adjusting

JPEG, PNG, WebP, AVIF, HEIC. Your file never leaves this device.

Choose image

All 10 adjustments

Light

Brightness

Lighten or darken the overall image.

Contrast

Increase for more drama, decrease for a flat muted look.

Color

Saturation

Boost colors or desaturate to grayscale.

Hue rotate

Shift all colors around the color wheel.

Temperature

Warm (golden) or cool (blue) color tone.

Sepia

Apply a vintage warm brown tone.

Grayscale

Remove color. 100% = full black and white.

Invert

Invert all colors for a negative image effect.

Detail

Sharpen

Enhance edges using an unsharp mask convolution.

Blur

Soften the image. Good for backgrounds and privacy.

How to actually fix a bad photo without overdoing it

Most bad photos aren't actually bad. They're underexposed, slightly flat, or shot in light that made everything look a bit off. A photo taken inside under fluorescent lighting looks cold and greenish. A photo taken in the late afternoon sun can look blown out and orange. A quick adjustment fixes these problems in a few seconds without any specialist software.

The mistake most people make is reaching for saturation first. Cranking up the colors is the most tempting adjustment because the effect is dramatic and immediate, but it's almost never the right starting point. Oversaturated images look processed and unnatural. Start with brightness and contrast instead. Get the exposure looking right. Then if the colors still feel lifeless, a small saturation boost of 10 to 20 points goes a long way.

The order that actually works

Start with brightness to correct the overall exposure. If the image looks dark, bring it up. If it looks washed out and pale, bring it down slightly. Then move to contrast. Increasing contrast makes the dark areas darker and the light areas lighter, which adds depth and makes the image feel more three-dimensional. Most phone photos benefit from a small contrast boost, around 10 to 15 points, because phone cameras tend to flatten the dynamic range to protect highlights.

Once the light looks right, check the temperature. If the image has a cold blue cast (common with shade, overcast days, or LED lighting), pull the temperature slider slightly toward warm. If it looks too orange or golden (common with tungsten indoor lighting), pull it slightly toward cool. These are usually small adjustments. If you find yourself moving the slider more than halfway across, the original photo had a serious white balance problem and correction might not fully save it.

When sharpening helps and when it makes things worse

Sharpening works by increasing the contrast along edges in the image. Used carefully, it makes photos look crisper and more detailed. Used aggressively, it creates halos around edges and makes the image look artificially processed, which is usually worse than the soft original.

A light sharpen of 10 to 20 points is useful for photos that look slightly soft from phone compression or minor camera shake. Skip sharpening entirely on portraits shot up close. Skin texture and pores get amplified quickly and the result is usually unflattering. Sharpening works best on architectural photos, product shots, and landscapes where crisp edges and fine detail are actually what you want to emphasize. If you need to blur a background or obscure sensitive information in a screenshot, the blur slider handles that without any quality issues on the rest of the image.

Frequently asked questions

What adjustments can I make to my image?

You can adjust brightness, contrast, saturation, hue rotation, colour temperature (warm/cool), sepia tone, grayscale, sharpen, blur and invert. The adjustments are organised into three groups: Light, Color and Detail.

Does adjusting the image affect its quality?

Most adjustments are applied losslessly during the download encode. Sharpening is applied via a pixel-level convolution which permanently modifies the pixel values. If you download as PNG or WebP lossless, there is no additional quality loss beyond the adjustments themselves. JPEG encoding at high quality (90+) is visually lossless for most images.

What is the temperature slider?

Temperature shifts the colour tone of the image between warm (orange/golden, positive values) and cool (blue, negative values). It simulates the effect of different lighting conditions. Moving toward warm makes the image feel like golden hour sunlight. Moving toward cool makes it feel like overcast daylight or shade.

What does the sharpen adjustment do?

The sharpen slider applies an unsharp mask convolution to the image on download. It enhances edges and fine detail by increasing the contrast between neighbouring pixels. It is applied using direct pixel manipulation via the Canvas API, not a CSS filter. Use it moderately — over-sharpening can create visible halos around edges.

Is my image uploaded to a server?

No. All adjustments are applied in your browser using the HTML5 Canvas API and CSS filters. Your image never leaves your device.

Can I reset individual adjustments?

Yes. Each slider has a Reset button that returns that specific adjustment to its default value. There is also a Reset all button in the header and footer that returns every adjustment to its default at once.