docs/content/en/functions/images/Contrast.md


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---
title: images.Contrast
description: Returns an image filter that changes the contrast of an image.
categories: []
keywords: []
params:
  functions_and_methods:
    aliases: []
    returnType: images.filter
    signatures: [images.Contrast PERCENTAGE]
---

The percentage must be in the range [-100, 100] where 0 has no effect. A value of `-100` produces a solid grey image, and a value of `100` produces an over-contrasted image.

## Usage

Create the filter:

```go-html-template
{{ $filter := images.Contrast -20 }}
```

{{% include "/_common/functions/images/apply-image-filter.md" %}}

## Example

{{< img
  src="images/examples/zion-national-park.jpg"
  alt="Zion National Park"
  filter="Contrast"
  filterArgs="-20"
  example=true
>}}