Geo is a

microformat Microformats (μF) are a set of defined HTML classes created to serve as consistent and descriptive metadata about an element, designating it as representing a certain type of data (such as contact information, geographic coordinates, events ...

used for marking up

WGS84 The World Geodetic System (WGS) is a standard used in cartography, geodesy, and satellite navigation including GPS. The current version, WGS 84, defines an Earth-centered, Earth-fixed coordinate system and a geodetic datum, and also describ ...

geographical coordinates (

latitude In geography, latitude is a coordinate that specifies the north– south position of a point on the surface of the Earth or another celestial body. Latitude is given as an angle that ranges from –90° at the south pole to 90° at the north pol ...

;

longitude Longitude (, ) is a geographic coordinate that specifies the east– west position of a point on the surface of the Earth, or another celestial body. It is an angular measurement, usually expressed in degrees and denoted by the Greek lette ...

) in

(X)HTML Extensible HyperText Markup Language (XHTML) is part of the family of XML markup languages. It mirrors or extends versions of the widely used HyperText Markup Language (HTML), the language in which Web pages are formulated. While HTML, prior ...

. Although termed a "draft" specification, this is a formality, and the format is stable and in widespread use; not least as a sub-set of the published

hCalendar hCalendar (short for ''HTML iCalendar'') is a microformat standard for displaying a semantic (X)HTML representation of iCalendar-format calendar information about an event, on web pages, using HTML classes and ''rel'' attributes. It allows p ...

and

hCard hCard is a microformat for publishing the contact details (which might be no more than the name) of people, companies, organizations, and places, in HTML, Atom, RSS, or arbitrary XML. The hCard microformat does this using a 1:1 representation o ...

microformat specifications, neither of which is still a draft. Use of Geo allows parsing tools (for example other websites, or

Firefox Mozilla Firefox, or simply Firefox, is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. It uses the Gecko rendering engine to display web pages, which implements current ...

's Operator extension) to extract the locations, and display them using some other website or

map A map is a symbolic depiction emphasizing relationships between elements of some space, such as objects, regions, or themes. Many maps are static, fixed to paper or some other durable medium, while others are dynamic or interactive. Although ...

ping tool, or to load them into a

GPS The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radionavigation system owned by the United States government and operated by the United States Space Force. It is one of the global navigation satellite sy ...

device, index or aggregate them, or convert them into an alternative format.

Usage

*If latitude is present, so must be longitude, and vice versa. *The same number of decimal places should be used in each value, including trailing zeroes.''Must'' and ''should'' are used per the

IETF The Internet Engineering Task Force (IETF) is a standards organization for the Internet and is responsible for the technical standards that make up the Internet protocol suite (TCP/IP). It has no formal membership roster or requirements and a ...

document The Geo microformat is applied using three

HTML classes HTML attributes are special words used inside the opening tag to control the element's behaviour. HTML attributes are a modifier of an '' HTML element type''. An attribute either modifies the default functionality of an element type or provides f ...

. For example, the marked-up text:

Belvide: 52.686; -2.193

becomes:

Belvide: 52.686; -2.193

by adding the class-attribute values "geo", "latitude" and "longitude". This will display

Belvide: 52.686; -2.193

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

hCard

Each Geo microformat may be wrapped in an

microformat, allowing for the inclusion of personal, organisational or venue names, postal addresses, telephone contacts, URLs, pictures, etc.

Extensions

There are three proposals, none mutually-exclusive, to extend the geo microformat:
geo-extension
- for representing coordinates on other planets, moons etc., and with non-WGS84 schema
geo-elevation
- for representing altitude
geo-waypoint
- for representing routes and boundaries, using waypoints

Users

Organisations and websites using Geo include: *

Flickr Flickr ( ; ) is an American image hosting and video hosting service, as well as an online community, founded in Canada and headquartered in the United States. It was created by Ludicorp in 2004 and was a popular way for amateur and profession ...

- on over three million photo pages * Geograph - on over one million photo pages *

Google Google LLC () is an American Multinational corporation, multinational technology company focusing on Search Engine, search engine technology, online advertising, cloud computing, software, computer software, quantum computing, e-commerce, ar ...

Multimap In computer science, a multimap (sometimes also multihash, multidict or multidictionary) is a generalization of a map or associative array abstract data type in which more than one value may be associated with and returned for a given key. Both m ...

- 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 The Dutch Wikipedia ( nl, Nederlandstalige Wikipedia) is the Dutch-language edition of the free online encyclopedia, Wikipedia. It was founded on 19 June 2001. As of , the Dutch Wikipedia is the -largest Wikipedia edition, with articles. It w ...

- ditto ** Swedish Wikipedia - ditto **

Italian Wikipedia The Italian Wikipedia ( it, Wikipedia in italiano) is the Italian-language edition of Wikipedia. This edition was created on May 11, 2001 and first edited on June 11, 2001. As of , , it has articles and more than registered accounts. It is t ...

Wikivoyage Wikivoyage is a free web-based travel guide for travel destinations and travel topics written by volunteer authors. It is a sister project of Wikipedia and supported and hosted by the same non-profit Wikimedia Foundation (WMF). Wikivoyage has ...

Many of the organisations publishing hCard include a geo as part of that.

h-geo

An alternative to Geo, h-geo, has been proposed. This is applied using three

. For example:

Belvide: 52.686; -2.193; 120

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

Notes

References

External links

Geo spec
with notes and examples
Geo cheat-sheet
a quick reference {{DEFAULTSORT:Geo (Microformat) Microformats Geocodes

Usage

hCard

Extensions

Users

h-geo

See also

Notes

References

External links