# Enhance Contrast

A command line tool that takes a contrast enhanced screenshot of a given web page.

## Usage

```sh
enhance-contrast url --width 1024 --height 768
```

The enhance-contrast generates two screenshots. The before.png (normal) and after.png (contrast enhanced). In the contrast enhanced screenshots, the contrast ratios between texts and backgrounds usually pass 4.5:1 ([WCAG 2.0 Success Criterion 1.4.3 Contrast (Minimum)](http://www.w3.org/TR/2008/REC-WCAG20-20081211/#visual-audio-contrast-contrast)).

It also generates contrast.json which includes more detailed information.

## Limitations

- Contrast calculations don't support images of texts
- Contrast calculations don't support background images (including CSS gradients)
- Contrast calculations are't accurate in some cases
- There are no plans to support full page screenshot
- This tool uses PhantomJS

## Powered by

- [Accessibility Developer Tools](https://github.com/GoogleChrome/accessibility-developer-tools)
- [PhantomJS](http://phantomjs.org/)


A command line tool that takes automatically contrast enhanced screenshot of a web page. 

enhance-contrast

A command line tool that takes automatically contrast enhanced screenshot of a web page

takenspc

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enhance-contrast

Enhance Contrast

Usage

Limitations

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