PageSpeed Insights API

index.js

const axios = require('axios');

const config = {
  method: 'get',
  url: 'https://www.googleapis.com/pagespeedonline/v5/runPagespeed',
  params: {
    key: '<YOUR_GOOGLE_API_KEY>',
    url: 'https://mucahitnezir.com',
    locale: 'tr'
  },
  headers: { 
    'Content-Type': 'application/json'
  }
};

axios(config)
  .then(function (response) {
    console.log(JSON.stringify(response.data));
  })
  .catch(function (error) {
    console.log(error);
  });