Overview
HTTP Archive (.har) files recorded from browser DevTools contain complete network captures: request URLs, timing metrics, response bodies, and sensitive session cookies or bearer tokens.
Google's legacy HAR Analyzer is functional but outdated. DevFlow's HAR Analyzer provides a high-performance, modern network waterfall visualizer with search filtering, latency diagnostics, and export pipelines.
Key Architectural Differences
1. High Performance on Large Archives
DevFlow streams and parses large HAR files (>50MB) smoothly in background Web Workers without locking up your browser tab.
2. Automatic Secret Redaction
Before sharing HAR files with teammates or third-party vendors, use DevFlow to redact Cookie, Authorization, and Set-Cookie headers.
3. Postman Collection Export
Convert selected API endpoints captured in your HAR file directly into a reusable Postman Collection or OpenAPI specification.
When to Choose DevFlow
- Modern, responsive waterfall UI with DNS, TCP, TLS, TTFT, and Download breakdown
- Filter by status code (4xx/5xx), MIME type, domain, and latency thresholds
- One-click conversion of network captures into Postman API collections
- Completely private client-side execution
When to Choose Google HAR Analyzer
- Simple Google Toolbox utility
- Long-standing reference implementation for GSuite support