HAR file analyzer
Drop the HAR exported from your browser and see weight, requests by type and domain, errors, what was slow, what came uncompressed and where the time went. The file is read in your browser and never uploaded.
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Related guides
How to improve LCP: the four parts of LCP time
LCP breaks down into TTFB, resource load delay, load duration and render delay. How to measure each part and what to fix in each one.
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