react-compare-image

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react-compare-image

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React component to compare two images with a slider

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# React Compare Image

[![All Contributors](https://img.shields.io/badge/all_contributors-8-orange.svg?style=flat-square)](https://raw.githubusercontent.com/tam315/react-compare-image/main/)

Simple React component to compare two images using slider.

![img](https://raw.githubusercontent.com/tam315/react-compare-image/refs/heads/main/readme.gif)

NOTE: [Vue.js Version](https://github.com/junkboy0315/vue-compare-image) is also available!

## Demo & Sample codes

[Demo & Sample codes](https://react-compare-image.yuuniworks.com/)

## Features

- Simple
- Responsive (always fit to the parent width)
- Horizontal & Vertical comparison

## How to use

```sh
yarn add react-compare-image
// or
npm install --save react-compare-image
```

Note: Version 1 or later works only with React16.8 or later. Use version 0 instead.

```jsx
import ReactCompareImage from 'react-compare-image';

<ReactCompareImage leftImage="image1.jpg" rightImage="image2.jpg" />;
```

## Props

| Prop (\* required)       | type                    |   default   | description                                                                                                           |
| ------------------------ | ----------------------- | :---------: | --------------------------------------------------------------------------------------------------------------------- |
| aspectRatio              | `'taller'` or `'wider'` | `'taller'`  | Which to choose if the aspect ratios of the images are different                                                      |
| handle                   | element                 |    null     | Custom handle element. Just pass `<React.Fragment />` if you want to remove handle.                                   |
| handleSize               | number (px)             |     40      | diameter of slider handle (by pixel)                                                                                  |
| hover                    | boolean                 |    false    | Whether to slide at hover                                                                                             |
| leftImage \*             | string                  |    null     | left image's url                                                                                                      |
| leftImageAlt             | string                  |    `''`     | alt props for left image                                                                                              |
| leftImageCss             | object                  |     {}      | Additional css for left image                                                                                         |
| leftImageLabel           | string                  |    null     | Label for the image (e.g. `before`)                                                                                   |
| onSliderPositionChange   | function                |    null     | Callback function called each time the slider changes. The position (0 to 1) of the slider is passed as arg           |
| rightImage \*            | string                  |    null     | right image's url                                                                                                     |
| rightImageAlt            | string                  |    `''`     | alt props for right image                                                                                             |
| rightImageCss            | object                  |     {}      | Additional css for right image                                                                                        |
| rightImageLabel          | string                  |    null     | Label for the image (e.g. `after`)                                                                                    |
| skeleton                 | element                 |    null     | Element displayed while image is loading                                                                              |
| sliderLineColor          | string                  | `'#ffffff'` | line color of slider                                                                                                  |
| sliderLineWidth          | number (px)             |      2      | line width of slider (by pixel)                                                                                       |
| sliderPositionPercentage | number (float)          |     0.5     | Default line position (from 0 to 1)                                                                                   |
| vertical                 | boolean                 |    false    | Compare images vertically instead of horizontally. The left image is on the top and the right image is on the bottom. |

## Supported browzer

Latest modern browsers(Chrome, Safari, Firefox, Edge)

react-compare-image

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