How to Use the HAR File Analyzer & Network Log Viewer
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1
Export a HAR file from browser Developer Tools (Network tab -> Export HAR).
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2
Drop the `.har` file into the analyzer.
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3
Review dashboard metrics: Total Requests, Total Transferred Bytes, Status Code Breakdown (2xx/3xx/4xx/5xx).
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4
Search and sort through the interactive table of all network requests.
Practical Example & Use Case
Common Real-World Scenario
Troubleshooting a slow page load by identifying a 4.2 MB uncompressed image file taking 1,800 ms to download in a customer’s HAR log.
Technical Notes & Limitations
Browser Engine Architecture
100% client-side parser; confidential API tokens and cookies inside your HAR log never leave your computer.
Frequently Asked Questions
Is it safe to analyze HAR files here?
Yes. Unlike cloud HAR viewers, this tool processes files entirely in your browser memory without uploading any bytes to a server.