---
layout: default
title: Adjustments
---

# Adjustments

## Brightness `bri`

Adjusts the image brightness. Use values between `-100` and `+100`, where `0` represents no change.

~~~ html
<img src="kayaks.jpg?w=500&bri=-25">
~~~

![© Photo Joel Reynolds](/images/kayaks-bri-neg25_w-500.jpg?w=500&bri=-25)

## Contrast `con`

Adjusts the image contrast. Use values between `-100` and `+100`, where `0` represents no change.

~~~ html
<img src="kayaks.jpg?w=500&con=25">
~~~

![© Photo Joel Reynolds](/images/kayaks-con-25_w-500.jpg?w=500&con=25)

## Gamma `gam`

Adjusts the image gamma. Use values between `0.1` and `9.99`.

~~~ html
<img src="kayaks.jpg?w=500&gam=1.5">
~~~

![© Photo Joel Reynolds](/images/kayaks-gam-1p5_w-500.jpg?w=500&gam=1.5)

## Sharpen `sharp`

Sharpen the image. Use values between `0` and `100`.

~~~ html
<img src="kayaks.jpg?w=500&sharp=15">
~~~

![© Photo Joel Reynolds](/images/kayaks-sharp-15_w-500.jpg?w=500&sharp=15)