HAR File Viewer & API Timeline Analyzer
Open HAR exports locally and turn them into a sortable timeline for slow requests, waterfalls, headers, and payload sizes. It helps engineering and QA teams diagnose frontend performance without uploading logs.
Use this tool directly in the browser, then move into Data & Analytics for nearby workflows and supporting utilities.
Loading tool interface…
Related tools
Keep working in the same category with nearby utilities and calculators.
Generate Chart
Turn pasted CSV, JSON, or plain text into configurable charts and downloadable reports.
WiFi Speed Test
Measure same-origin download speed, upload speed, latency, and connection quality with browser-safe benchmarks.
Ping Test Tool
Test round-trip request latency to a public URL with browser-safe fetch timing and packet-loss estimates.
CSV Column Profiler
Profile CSV headers, fill rates, and likely column types from pasted data.
Data Size Estimator
Estimate dataset storage growth from row counts and average row sizes.