Handling Images With JavaScript And Canvas – daycaca

daycaca is a standalone JavaScript library which makes uses of canvas and a little of JavaScript to handle/process images on the client side.

Features:

• Base64 Image Encoding.
• Image Cropping.
• Image Compression.
• Image Rotation.

How to use it:

Install the daycaca via NPM.

# NPM
$ npm install daycaca --save

Import the daycaca into the project.

import daycaca from 'daycaca';

Or include the JavaScript file ‘daycaca.min.js’ into the document.

<script src="daycaca.min.js"></script>

Optimize your image and convert it to base64:

• @param {el|String}: src the source of image
• @param {Function}: callback

daycaca.base64('image.png', () => {
  //...
});

Compress your image.

• @param {el|String}: src the source of image
• @param {Number}: the quality of image ( 100 = the highest quality)
• @param {Function}: callback

daycaca.compress('image.jpg', 10, () => {
  //...
});

Crop your image via canvas and generate data.

• @param {el|String}: src the source of image
• @param {Options}: crop options
• @param {Function}: callback

daycaca.crop('image.jpg', {
  x: 20,
  y: 20,
  w: 120,
  h: 60
  }, () => {
  //...
});

Rotate your image by certain degress.

• @param {el|String}: src the source of image
• @param {Degree}:  rotation degress
• @param {Function}: callback

daycaca.rotate('image.jpg', 180, () => {
  //...
});

Resize your image.

• @param {el|String}: src the source of image
• @param {ratio}:  ratio
• @param {Function}: callback

daycaca.resize('image.jpg', 0.5, (data) => {
  //...
});

Changelog:

10/29/2018

• v1.0.8: Added resize.