![]() ![]() Here are three options that will create visualizations of HAR files: Visualizing a HAR FIleĪs the file is in a JSON format, this is relatively easy to process with software, but it can be difficult for us humans to visualize. That said, if you are using a modern browser it can generate a waterfall diagram, without the need to capture the HAR file as an interim representation, and this provides most of the information you will need in an instantly available view. It is possible to use Firefox, Firebug, and NetExport together to generate a HAR file for a specific URL. Automated testing tools can be tailored to get HAR files. High quality monitoring services will collect the HAR data for each sample they take. #.har viewer how to#How to Get a HAR FileĪs HAR files are still an evolving format, support can be patchy and it may take some work to get your HAR file. But with practice a HAR file can quickly help you identify the key performance problems with a web page, letting you efficiently target your development efforts at areas of your site that will deliver the greatest results. The data is stored as a JSON document and extracting meaning from the low-level data is not always easy.
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