GTmetrix Performance Blog
News, updates and guides on GTmetrix and general web performance
Tag: response headers
How to Read a Waterfall Chart for Beginners
Learn what each element of a Waterfall Chart means and how it relates to performance.
Recent Posts
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Big changes are coming to GTmetrix: Lighthouse, new test locations, new PRO plans, etc.
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Improved consistency in report timings
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GTmetrix interview with Website Planet
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Recommendation Updates – HTTP/2 changes and more
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Black Friday/Cyber Monday 2019: Performance Blips and Blunders of Top Online Retailers