sharp-blur-benchmark

benchmark.js

const fs = require('fs');
const sharp = require('sharp');
const axios = require('axios');

const URL =
  'http://static.megaphone.fm/podcasts/05f71746-a825-11e5-aeb5-a7a572df575e/image/uploads_2F1516902193862-jqkml22bswo-cee641b4533ddb31a5a7ab656fe45116_2FCURRENT_Reply+All+Logo.png';

function time(hrtime) {
  const nanoseconds = hrtime[0] * 1e9 + hrtime[1];
  const seconds = nanoseconds / 1e9;
  return seconds;
}
async function request(url) {
  const response = await axios({
    url,
    responseType: 'arraybuffer',
    responseEncoding: null
  });
  return response.data;
}

(async () => {
  const buffer = await request(URL);

  const start1 = process.hrtime();
  const result1 = await sharp(buffer, { density: 300 })
    .resize(1920, 1920)
    .max()
    .toFormat('jpeg')
    .toBuffer();
  console.info('Without blur:', time(process.hrtime(start1)), 'seconds');
  fs.writeFileSync('result-without-blur.jpg', result1);

  const start2 = process.hrtime();
  const result2 = await sharp(buffer, { density: 300 })
    .resize(1920, 1920)
    .max()
    .blur(120)
    .toFormat('jpeg')
    .toBuffer();
  console.info('With blur:', time(process.hrtime(start2)), 'seconds');
  fs.writeFileSync('result-with-blur.jpg', result2);
})();