har-viewer – inspect HAR (HTTP Archive) files

har-viewer is a terminal user interface for inspecting HAR (HTTP Archive) files from the command line.

It lets developers, testers, and web performance analysts browse captured network requests, examine request and response metadata, inspect response bodies, and view timing diagnostics without needing to open a browser-based tool.

This is free and open source software.

Key Features

• Browse requests contained in HAR files from a terminal interface.
• Filter requests by URL using regular expressions.
• Inspect request details including query parameters, headers, cookies, and request bodies.
• View response status, headers, cookies, redirect targets, and response bodies.
• Syntax highlighting for JSON, HTML/XML, JavaScript, and form data.
• Toggle JSON pretty-printing for easier reading of structured responses.
• Analyze request timing with visual bars for blocked, DNS, connect, SSL, send, wait, and receive phases.
• Cross-platform support – runs under Linux and macOS.

Website: github.com/nassendelft/har-viewer
Support:
Developer: nassendelft
License: GNU General Public License v3.0

har-viewer is written in Kotlin and C++. Learn Kotlin with our recommended free books and free tutorials. Learn C++ with our recommended free books and free tutorials.

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