Single-File Analyzer
Simple GPX Viewer
A browser-only GPX analyzer that loads private activity files, projects routes, charts elevation and speed, segments motion, and exports JSON.
Employer signal
What This Project Shows
This project shows how much can be done in a single-file tool when the workflow is well understood: parse, compute, visualize, inspect, and export.
Problem
What Needed To Be Solved
Raw GPX XML is hard to audit manually, while many mapping tools require uploading sensitive location history. A local viewer gives faster inspection and better privacy.
Approach
How I Built The Solution
I built the viewer around client-side file input. The parser extracts tracks, routes, waypoints, timestamps, elevation, and metadata, then the analysis layer computes distance, speed, moving time, stopped time, and elevation behavior.
Outcome
What It Demonstrates
The project demonstrates practical parsing, mathematical modeling, and frontend tooling around real user data.
Evidence From Source
Source signal
The single HTML file contains `parseGPX`, `analyzeGPX`, `haversine`, playback controls, chart hover behavior, and JSON export.
Design value
The app keeps private files local and still provides the analysis surfaces normally expected from a larger web service.