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Continuing from our last year’s Black Friday/Cyber Monday post, we monitored over 50 popular retailer sites from the UK/US to see how they fared in this year’s shopping rush. Test Methodology We use

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Check out our Black Friday 2018 Performance Infographic! Read our full article on Black Friday/Cyber Monday 2018: Performance Blips and Blunders of Top Online Retailers .

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Welcome to GTmetrix PRO! As a PRO user, you have access to more performance insights and reporting to help keep your site optimized and ruing smoothly. In this guide, we’ll show you how to get start

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