.osm File Extension

OpenStreetMap Map

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What is a .osm file?

The OSM file format is a data format used by OpenStreetMap (OSM), a collaborative project to create a free editable map of the world. OSM files store geographic data, including points of interest (POIs), roads, buildings, and other features, represented as nodes, ways, and relations. Nodes are points with latitude and longitude coordinates. Ways are ordered lists of nodes representing linear features like roads or rivers. Relations are used to group nodes, ways, and other relations to represent more complex features like bus routes or administrative boundaries. The OSM format is typically XML-based, although other formats like Protocolbuffer Binary Format (PBF) are also used for efficiency. OSM data is used in a wide range of applications, including navigation systems, mapping software, and geographic information systems (GIS). The open and collaborative nature of OpenStreetMap makes it a valuable resource for creating and maintaining up-to-date and detailed maps.

.osm File

OpenStreetMap Map

Compatible Software Alternatives

Software Compatibility

Windows

  • JOSM
  • QGIS
  • Merkaartor
  • Osmosis

macOS

  • JOSM
  • QGIS
  • Merkaartor
  • Osmosis

Linux

  • JOSM
  • QGIS
  • Merkaartor
  • Osmosis
  • VLC (for some OSM formats)

Mobile

  • OsmAnd
  • Maps.me
  • Organic Maps

Alternative File Formats

Related Categories

Data Files Archive FilesAudio FilesDocument Files

Frequently Asked Questions About .osm Files

To open a .osm file, you need compatible software. Here are some options:

  • JOSM
  • QGIS
  • OsmAnd

Check the "Software Compatibility" section above for a complete list of programs that can open .osm files on different operating systems.

To convert a .osm file to another format, you can:

  1. Use compatible software: Many programs that open .osm files also allow saving or exporting to different formats. For example, you might try using JOSM or JOSM.
  2. Try online conversion services: Websites like Zamzar, CloudConvert, or Online-Convert can transform files between formats without installing software.
  3. Convert to recommended alternatives: For .osm files, consider converting to .geojson, .shp, .kml for better compatibility.
  4. Specialized conversion tools: Search for ".osm converter" to find tools specifically designed for this file type.

Note: Converting files may result in some loss of formatting, quality, or functionality depending on the compatibility between formats.

If you're having trouble opening a .osm file, try these troubleshooting steps:

  1. Verify the file extension is correct: Sometimes files may be incorrectly named. Make sure the file truly is a .osm file.
  2. Update your software: Ensure you're using the latest version of your chosen program.
  3. Try alternative software: If one program doesn't work, try another from our compatibility list.
  4. Check for file corruption: The file might be damaged. Try to obtain a new copy if possible.
  5. Look for file converters: Converting to a more common format might help.

Like any file type, .osm files can be safe or potentially risky depending on their source:

  • From trusted sources: Files from reputable websites, colleagues, or friends are generally safe.
  • From unknown sources: Exercise caution with files from unfamiliar websites or emails.

Safety recommendations:

  • Always scan files with antivirus software before opening them
  • Keep your operating system and applications updated
  • Be particularly cautious with executable file types

Common issues with .osm files include:

  • Compatibility problems: Older or newer versions of software may not fully support certain .osm files
  • Missing elements: Fonts, media, or other components may not transfer correctly between systems
  • File corruption: Incomplete downloads or transfer errors can damage files
  • Format variations: Different software may implement the .osm format in slightly different ways

If you're experiencing issues with a specific .osm file, you might need to:

  • Try opening it with alternative software
  • Ask the file creator to save it in a different format
  • Look for specific patches or updates for your software

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