mapy-gpx-exporter

Export GPX files from Mapy.com route planner share links (mapy.com/s/{id}) — one link or a whole batch, from the command line or as a Python library.

Why

Mapy.com's web UI lets you export a planned route as GPX, but there's no public API for it and no way to batch-export a list of saved routes. This library reverse-engineers the two requests the "Export → GPX" button makes and wraps them in a clean, typed, tested client.

How it works

1. Anonymous Routes: GET https://mapy.com/s/{id} — Mapy.com replies with a plain HTTP 301 redirect; the full route state (waypoint geometry, routing profile) is embedded in the Location header's query string. We decode the proprietary rc parameter string and re-encode it as absolute chunks to GET https://mapy.com/api/tplannerexport, which returns the GPX file.
2. Saved Routes (dim links): If the link is a saved route, the geometry is stored server-side. We use pyfrpc to simulate Mapy.cz's FastRPC routing API (https://mapy.com/api/mapybox-ng/), locally decode the proprietary 5-bit delta-encoded geometry, interpolate elevations, and manually construct the GPX file locally.

This is an unofficial client built against publicly observable network behavior, not a documented or officially supported API. It does not bypass any authentication, paywall, or rate limiting; it only automates the same request an anonymous browser session makes when you click "Export → Save". Endpoint behavior may change without notice — see Limitations.

Install

uv pip install mapy-gpx-exporter

# To support saved routes (dim links), install with the frpc extra:
uv pip install mapy-gpx-exporter[frpc]

CLI usage

# single route
mapy-gpx export https://mapy.com/s/mukekodezu -o route.gpx

# batch: one link per line in links.txt
mapy-gpx batch links.txt --out-dir ./gpx --concurrency 5

Library usage

from mapy_gpx_exporter import MapyGpxClient

with MapyGpxClient() as client:
    gpx_bytes = client.fetch_gpx("https://mapy.com/s/mukekodezu")

with open("route.gpx", "wb") as f:
    f.write(gpx_bytes)

Batch export, async:

import asyncio
from mapy_gpx_exporter import AsyncMapyGpxClient

async def main():
    urls = ["https://mapy.com/s/mukekodezu", "https://mapy.com/s/another"]
    async with AsyncMapyGpxClient(max_concurrent=5) as client:
        results = await client.fetch_many(urls)
    for url, result in results:
        if isinstance(result, Exception):
            print(f"failed: {url}: {result}")
        else:
            print(f"ok: {url} ({len(result)} bytes)")

asyncio.run(main())

Limitations

• Only tested against the "planned route" (turisticka/planner) and activity traces.
• No authentication support — routes that require a logged-in session and are strictly private won't export.
• This relies on an undocumented, unofficial endpoint and reverse-engineered formats. Mapy.com can change it at any time without notice.

Development

uv sync --extra dev
uv run pytest
uv run ruff check .
uv run mypy src
uv run pre-commit install

License

MIT