<cpol-image> is a polymer image resizer. It convert input file to resized blob or base64 type image. It's usefull when you want to upload thumbnail to firebase or other backend.

How to install:

bower install --save cpol-image

Simple example to use <cpol-image>:

<template>
  <style>
    :host {
      display: block;
    };
  </style>
  ...
  <input id="ifile" type="file">
  <cpol-image output-data='{{result}}'></cpol-image>
  <paper-button on-tap='_exe'>Process</paper-button>
  <img src$='[[_computeBlob(hasil)]]'>
  ...
</template>
<script>
  Polymer({
    ...
    _exe: function() {
      this.$.coba.processImageFile(this.$.ifile.files);
    },
    ...
  });
</script>

Set scale or width and/or height as you want.

Scale become the highest priority to be executed.

You can set scale number to be executed

<cpol-image output-data='{{result}}' scale='0.5'></cpol-image>

You can set maxWidth and/or maxHeight to be executed

<cpol-image output-data='{{result}}' max-width='1024'></cpol-image>
<cpol-image output-data='{{result}}' max-height='768'></cpol-image>
<cpol-image output-data='{{result}}' max-width='1024' max-height='400'></cpol-image>

You can change output type between 'blob' and 'base64'.

Don't forget to handle both type carefully or you got an error.

<cpol-image output-data='{{result}}' output-type='base64' scale='0.5'></cpol-image>