Geo (microformat)

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A Geo microformat, detected on the Wikipedia page for Great Barr, by Firefox's Operator extension. Users may add alternative mapping sources to those shown, which are included by default.

Geo is a microformat used for marking up WGS84 geographical coordinates (latitude;longitude) in (X)HTML.^[1] Although termed a "draft" specification, this is a formality, and the format is stable and in widespread use;^[2] not least as a sub-set of the published hCalendar^[3] and hCard^[4] microformat specifications, neither of which is still a draft.^[3][4]

Use of Geo allows parsing tools (for example other websites, or Firefox's Operator extension) to extract the locations, and display them using some other website or mapping tool, or to load them into a GPS device, index or aggregate them, or convert them into an alternative format.

Usage[]

The below describes the new version of the geo microformat, h-geo.

• All properties are optional.^[5]
• The same number of decimal places should be used in each value, including trailing zeroes.^{[note 1]}

The hGeo microformat is applied using three HTML classes. For example, the marked-up text:

<div>Belvide: 52.686; -2.193; 120</div>

becomes:

<div class="h-geo">Belvide: <span class="p-latitude">52.686</span>; <span class="p-longitude">-2.193</span>; <span class="p-altitude">120</span></div>

by adding the class-attribute values "h-geo", "p-latitude", "p-longitude", and "p-altitude".

This will display

Belvide: 52.686; -2.193; 120

and a geo microformat for that location, Belvide Reservoir, which will be detected, on this page, by microformat parsing tools.

Legacy Geo[]

The legacy microformat uses the class-attribute values "geo", "latitude" and "longitude". There is no support for altitude. The legacy and modern attribute formats can coexist.

hCard[]

Each Geo microformat may be wrapped in an hCard microformat, allowing for the inclusion of personal, organisational or venue names, postal addresses, telephone contacts, URLs, pictures, etc.

Users[]

Organisations and websites using Geo include:

• Flickr - on over three million photo pages
• Geograph - on over one million photo pages
• Google^[6]
• Multimap - all map pages
• OpenStreetMap - wiki pages about places, GPS traces and diary entries
• Wikipedia - embedded in geo templates of map-link pages
  • German Wikipedia - ditto
  • Dutch Wikipedia - ditto
  • Swedish Wikipedia - ditto
  • Italian Wikipedia
• Wikivoyage

Many^[which?] of the organisations publishing hCard include a geo as part of that.

See also[]

• GeoSPARQL, Geographic Information System (GIS) data for the W3C Semantic Web using the Resource Description Framework (RDF) and SPARQL
• Geo URI specified in RFC 5870
• ISO 6709
• ICBM address, an older geotagging format
• Schema.org, web standard schema.org/geo.

Notes[]

References[]

External links[]

• Geo spec with notes and examples
• Geo cheat-sheet a quick reference