{"id":37703,"date":"2017-08-21T18:01:10","date_gmt":"2017-08-21T10:01:10","guid":{"rendered":"https:\/\/www.hongkiat.com\/blog\/?p=37703"},"modified":"2022-09-18T21:10:47","modified_gmt":"2022-09-18T13:10:47","slug":"website-speed-testing-duoload","status":"publish","type":"post","link":"https:\/\/www.hongkiat.com\/blog\/website-speed-testing-duoload\/","title":{"rendered":"Compare Websites Loading Speed (Side-by-Side) with This Tool"},"content":{"rendered":"<p>It\u2019s no secret that a website\u2019s <strong>load time<\/strong> is a huge factor in usability. This also <strong>affects your site\u2019s Google rankings<\/strong>, so your page speed is definitely worth optimizing.<\/p>\n<p>If there\u2019s a competitor you\u2019re trying to outrank, one metric you might analyze is <strong>page speed<\/strong>. And, with a tool like <strong><a href=\"http:\/\/duoload.verou.me\/\" target=\"_blank\" rel=\"noopener\">Duoload<\/a><\/strong>, you can check the <strong>speed of two pages simultaneously<\/strong>, right from your browser.<\/p>\n<p>This is one of the few tools I\u2019ve found where you can study page loading times together in a single window. You can watch <strong>how they render<\/strong> and <strong>which page elements load first<\/strong> on both sites.<\/p>\n<p class=\"note\"><strong>Read Also:<\/strong> <a target=\"_blank\" href=\"https:\/\/www.hongkiat.com\/blog\/how-to-measure-front-end-website-performance\/\" rel=\"noopener\">How To Measure Front-end Website Performance<\/a><\/p>\n<p>The loading process is <strong>controlled through a single button<\/strong>, so you press it once to load both websites at the same time. Pretty neat!<\/p>\n<p>I would love to see an extra feature to set a custom proxy or IP to load from different countries. But for now, you can only get this to work if you <strong>run traffic through a <a href=\"https:\/\/www.hongkiat.com\/blog\/free-virtual-private-networks\/\">VPN<\/a><\/strong>.<\/p>\n<p>Still, Duoload is quite valuable because it also lets you browse around the websites to see the difference in page speeds. This way you can <strong>gauge the overall user experience<\/strong> between two different sites and check your site against other competitors.<\/p>\n<figure><a href=\"http:\/\/duoload.verou.me\/\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/assets.hongkiat.com\/uploads\/website-speed-testing-duoload\/02-comparison-ecommerce-sites-duoload.jpg\" alt=\"Duoload web app\" width=\"1000\" height=\"408\"><\/a><\/figure>\n<p>This is a super basic web app but it leaves <strong>plenty of room for customization<\/strong>.<\/p>\n<p>You can <strong>find all the source code<\/strong> for free <a href=\"https:\/\/github.com\/LeaVerou\/duoload\" target=\"_blank\" rel=\"noopener\">on GitHub<\/a> to download a copy and even host it yourself. This lets you <strong>edit the app<\/strong> to include any changes to the JavaScript for tracking load times, large HTTP assets, and even adding a 3rd website pane into the mix.<\/p>\n<p>If you have suggestions for extra features or want to share some love, you can always drop a line to the creator Lea Verou on her Twitter <a href=\"https:\/\/twitter.com\/leaverou\" target=\"_blank\" rel=\"noopener\">@LeaVerou<\/a>.<\/p>\n<p class=\"note\"><strong>Read Also:<\/strong> <a target=\"_blank\" href=\"https:\/\/www.hongkiat.com\/blog\/ultimate-guide-to-web-optimization-tips-best-practices\/\" rel=\"noopener\">Ultimate Guide To Web Optimization (Tips & Best Practices)<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>It\u2019s no secret that a website\u2019s load time is a huge factor in usability. This also affects your site\u2019s Google rankings, so your page speed is definitely worth optimizing. If there\u2019s a competitor you\u2019re trying to outrank, one metric you might analyze is page speed. And, with a tool like Duoload, you can check the&hellip;<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3393],"tags":[2159],"topic":[4520],"class_list":["entry-content","is-maxi"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.8 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Compare Website Loading Speeds (Side-by-Side) with Duoload<\/title>\n<meta name=\"description\" content=\"It&#039;s no secret that a website&#039;s load time is a huge factor in usability. This also affects your site&#039;s Google rankings, so your page speed is definitely\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.hongkiat.com\/blog\/website-speed-testing-duoload\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Compare Websites Loading Speed (Side-by-Side) with This Tool\" \/>\n<meta property=\"og:description\" content=\"It&#039;s no secret that a website&#039;s load time is a huge factor in usability. 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