Convert KMZ to FlatGeobuf Online — Free & Instant
FlatGeobuf is the modern binary format for efficient geospatial data storage and streaming. Converting your KMZ file to FlatGeobuf produces a compact, indexed .fgb file supported by QGIS and GDAL — ideal for archiving Google Earth data in a cloud-ready format.
File converter
When to convert KMZ to FlatGeobuf
- Archiving Google Earth KMZ exports as compact FlatGeobuf for QGIS analysis
- Converting KMZ survey data to FlatGeobuf for cloud storage workflows
How to convert KMZ to FlatGeobuf
- 1
Upload your KMZ
Drop your .kmz file on the upload zone.
- 2
Select FlatGeobuf
Click FlatGeobuf in the format panel.
- 3
Download and use
Open the .fgb in QGIS or serve from cloud storage.
About KMZ
KMZ is a ZIP-compressed version of a KML file. It typically contains a doc.kml file at its root along with any referenced images, icons, or overlays. KMZ files are smaller than their KML counterparts, making them easier to share by email or embed on web pages. They are supported by Google Earth, QGIS, ArcGIS, and many online mapping tools. KMZ files can be uploaded directly to Google My Maps.
Strengths
- +Smaller than raw KML
- +Can bundle images and overlays
- +Widely accepted by mapping tools
About FlatGeobuf
FlatGeobuf is a modern, high-performance binary format for geospatial vector data, designed for efficient streaming and cloud-native workflows. Based on FlatBuffers, it supports random access via HTTP range requests, making it ideal for serving large datasets directly from object storage like S3 without a tile server. FlatGeobuf is an OGC Community Standard and is supported by GDAL 3.1+, QGIS, Mapbox, and the GeoJSON ecosystem. Its compact binary encoding is significantly faster to parse than GeoJSON for large datasets.
Strengths
- +Extremely fast read/write — binary encoding
- +Supports HTTP range requests for cloud-native access
- +OGC Community Standard
- +Compact — much smaller than equivalent GeoJSON
Frequently asked questions
Q.Is plain KML also accepted?
Yes. Use the KML to FlatGeobuf converter for .kml files.