Open Geo Files Online and Export Standalone HTML Maps

Use this geo file viewer directory to open your format, inspect its tracks, points and polygons on an interactive map, then export one self-contained HTML map file. The map engine, styles and your features are inlined into a single page. Double-click the export to open it, with or without internet. No Google Earth, no QGIS, no GIS server, no account: processing stays in your browser.

NMEA & AIS tools — maps, message inspection and vessel playback.

NMEA tools

Choose the workflow that matches your NMEA log. All three tools parse locally in your browser.

NMEA to HTML MapMap and export — plot NMEA 0183, AIS and common NMEA 2000 text logs, then download HTML, KML, GPX or CSV. NMEA Viewer & AnalyzerInspect and troubleshoot — filter sentences and PGNs, check fields, checksums and raw bytes, and replay positions. AIS NMEA Vessel ViewerInspect vessels — group AIVDM/AIVDO reports by MMSI, select a vessel and replay its positions.

Choose your format

KMLKML to Interactive HTML MapGoogle Earth placemarks — points, paths and areas with their descriptions and data fields. KMZKMZ to Interactive HTML MapZipped KML archives, unpacked in your browser — no Google Earth needed. GPXGPX to Interactive HTML MapGPS tracks, routes and waypoints from Strava, Garmin, Komoot and phone trackers. TCXTCX to Interactive HTML MapGarmin training files — the track plus distance and duration in the popup. FITFIT to Interactive HTML Map (Garmin)Watch recordings in Garmin's binary format, decoded locally. SHPShapefile to Interactive HTML MapEsri shapefile sets (shp + dbf + prj) with attributes — no QGIS needed. GeoJSONGeoJSON to HTML Map ConverterThe web-native GIS format — points, lines and polygons, properties preserved. GeobufGeobuf to HTML Map ConverterCompact Geobuf binary, decoded locally into a standalone map with properties. CSVCSV to HTML Map ConverterSpreadsheet rows with coordinate columns, auto-detected and color-coded. XLSXExcel to HTML Map ConverterWorkbook sheets with coordinate columns, with multi-sheet support. ADDRAddress List to Interactive MapA plain address list or CSV — geocoded via OpenStreetMap and pinned on the map.

How it works

STEP 1

Drop your file

Open the tool for your format and drop the file in. It is parsed locally — nothing is uploaded.

STEP 2

Preview the map

Features render instantly on an interactive map with popups, tooltips and a summary of what was found.

STEP 3

Export one HTML file

Download a single standalone .html map. "No basemap" mode makes it fully offline — email it, archive it, open it anywhere.

Why a standalone HTML map?

Geo files are awkward to share. A shapefile arrives as a folder of parts, KML needs Google Earth, and FIT needs Garmin software — every recipient needs their own install. A standalone HTML map inverts that: everything (the map engine, the styles, your data) is inlined into one file that any browser opens. Send it to a customer who has never heard of GeoJSON, upload it to a static host, or keep it for ten years — it will still open exactly the same.

And because every tool here processes files in the browser, sensitive locations — site plans, customer lists, field data — never pass through a server. You can watch the network tab; nothing carries your file.

FAQ

Which tool do I need for my file?

Match by extension: .kml → KML tool, .kmz → KMZ viewer, .gpx → GPX tool, .nmea or a NMEA text .log → NMEA map tool, .tcx → TCX viewer, .fit → FIT viewer, .shp or a shapefile .zip → Shapefile tool, .geojson → GeoJSON tool, .geobuf → Geobuf tool, .csv → CSV tool or the address list tool (if it contains addresses rather than coordinates), .xlsx → Excel tool.

Is anything uploaded to a server?

No files are uploaded in any of these tools. One exception to be precise about: the address list tool converts address text into coordinates via the public OpenStreetMap geocoding services, so the address text itself is sent for lookup — that page explains it in full. Coordinate rows and all other tools never touch the network.

Can the exported map really work offline?

Yes. Export with "Offline (no basemap)" and the HTML file has zero external requests: the map engine and your data are inlined, and features draw on a clean background. Basemap tiles (OSM or satellite) are an optional extra for online viewing.

The Satellite imagery option shows a blank map — what's wrong?

The satellite tiles come from Esri's free World Imagery service, which is unavailable on some networks (parts of mainland China, for example, can't reach arcgisonline.com). It is a network reachability issue, not a bug — the same view works on other networks. If you need satellite imagery in the exported file, export while your network can reach it; for a basemap that never depends on the network at all, use "Offline (embedded tiles)" or "Offline (no basemap)".

I double-clicked the exported file and the basemap tiles don't load — why?

The OpenStreetMap tile server rejects requests that come from locally opened files (file:// pages send no Referer, which their policy requires). The exported map handles this automatically: street tiles switch to a fallback source so the map still shows. To get official OSM tiles instead, serve the file over http(s) — the fastest way is a local server. Save this as serve-map.bat next to your map file, double-click it, and open the address it prints:

@echo off start http://localhost:8899/map.html python -m http.server 8899

Any static hosting (Cloudflare Pages, GitHub Pages, Netlify) works too — the export is one plain HTML file.

Is there a file size limit?

No hard limit — files are processed in your browser's memory, so the practical ceiling is your device's RAM and browser. Large files load fine on a modern machine; exports include the first 1,000 features in each file.