This article lists common URI schemes. A Uniform Resource Identifier helps identify a source without ambiguity. Many URI schemes are registered with the IANA; however, there exist many unofficial URI schemes as well. Mobile deep links are one example of a class of unofficial URI schemes that allow for linking directly to a specific location in a mobile app.

Official IANA-registered schemes URI schemes registered with the IANA, both provisional and fully approved, are listed in its registry for Uniform Resource Identifier (URI) Schemes. These include well known schemes such as: File URI scheme File Transfer Protocol Hypertext Transfer Protocol Hypertext Transfer Protocol Secure mailto for email addresses for telephone numbers Internet Message Access Protocol Internet Relay Chat Network News Transfer Protocol as well as many lesser known schemes such as: Application Configuration Access Protocol ACE Governed Intelligence Internet Content Adaptation Protocol Message Tracking Query Protocol () Encrypted WebSocket connections

Unofficial but common URI schemes Scheme Purpose Defined by General format Notes admin URL scheme in the GNOME desktop environment to access file(s) with administrative permissions with GUI applications in a safer way, instead of sudo, gksu & gksudo, which may be considered insecure GNOME Virtual file system admin:/⟨path⟩/⟨to⟩/⟨file⟩ example: gedit admin:/etc/default/grub at Reference individual records in a specific repository, identified by either DID or handle.. AT Protocol at://<authority>/<collection>/<rkey> app URL scheme can be used by packaged applications to obtain resources that are inside a container Google app://⟨application⟩/⟨path⟩ example: app://com.foo.bar/index.html freeplane Open a Freemind/Freeplane .mm file in the locally installed Freeplane application and optionally highlight a node in the opened mindmap.Freeplane v1.3 and above freeplane:/%20⟨path to file⟩#ID_⟨node number⟩ freeplane:/%20⟨path to file⟩#:⟨path⟩/⟨in⟩/⟨map⟩/⟨to⟩/⟨node⟩ geo Open a geographic location in a two or three-dimensional coordinate reference system on your preferred maps application.Internet Engineering Task Force's RFC 5870 (published 8 June 2010) geo:⟨x⟩,⟨y⟩example: geo:37.7904462,-122.4017974 See more information on: Geo URI scheme. Alternatively, maps: may be implemented in some clients. itms The iTunes Media Store URI scheme, is used to open store listings in the iTunes application on Windows, Mac, iOS. Apple itms://itunes.apple.com/<Country Code>/<Media Type>/<Content Title>/<Content ID> <Media Type> can be: album, movie, tv-season, podcast, audiobook, app itms-apps:// is used for Mac App Store and iOS App Store javascript Execute JavaScript code.IETF Draft javascript:⟨javascript to execute⟩ jdbc Connect a database with Java Database Connectivity technology. Database vendor dependent jdbc:somejdbcvendor:other_data... jdbc:oracle:oci:@host:port(sid or [/service])?params... jdbc:sqlserver://serverName\instanceName:portNumber;params... jdbc:mysql://host:port/database?params... Requires a vendor provided connector (jar archive) to be included in the client library.minecraftUsed to run actions on the game Minecraft: Bedrock Edition.Mojang StudiosExplained here. msteams Used by Microsoft to launch the Microsoft Teams desktop clientMicrosoft msteams:/l/... ms-accessms-excelms-infopathms-projectms-publisherms-spdms-visioms-word Used by Microsoft to launch Microsoft Office applicationsMicrosoft ⟨scheme-name⟩:⟨command-name⟩|⟨command-argument-descriptor⟩|⟨command-argument⟩ example: ms-excel:ofv|u|<https://contoso/Q4/budget.xls> odbc Open Database ConnectivityIETF Draft psnsUsed by PlayStation consoles to open the PS Store application, also used by Media GoSony (not public)psns://browse?product=⟨ContentID⟩If entered without parameters, like psns:// it opens the PS Store or Media Go app main page. rdar URL scheme used by Apple's internal issue-tracking system Apple (not public) rdar://⟨issue number⟩ example: rdar://10198949 Allows employees to link to internally-tracked issues from anywhere. Example of a private scheme which has leaked in to the public space and is widely seen on the internet, but can only be resolved by Apple employees. s3 Used to interact programmatically with Amazon S3 bucketaws-cli documentation shortcuts A scheme used by Apple to execute a Shortcut from apps that support links Apple shortcuts://run-shortcut?name=Add20%to20%Notes&input=clipboard steam The steam URI scheme, also known as the "Steam Browser Protocol", is used by the Steam store webapp to open the desktop application or to run a specific command if the app is already opened. The command to run is also specified along with the URI itself. Steam (service) steam://<command> slack Used by Slack to launch the Slack clientSlack API reference slack://open?team={TEAM_ID} trueconf Used by TrueConf Server to interact with client applicationsTrueConf official website trueconf:[target] [@server]&[param_1]=[value_1]&[...]&[param_n]=[value_n] viber Open the locally installed Viber application to link to a view or perform an action, such as share an URL to a contact.Viber API Documentation - Deep Links Viber API Documentation - Viber Share Button viber://pa?chatURI=⟨URI⟩ viber://pa/info?uri=⟨URI⟩ viber://forward?text=<ShareDescription> web+... Effectively namespaces web-based protocols from other, potentially less web-secure, protocols This convention is defined within the HTML Living Standard specificationHTML Living Standard specification web+: This convention is not associated with the registration of any new scheme but is currently a requirement as well as convention for non-whitelisted web-based protocols. zoommtgzoomus Used by Zoom conferencing software to launch the Zoom clientZoom developer community zoommtg://zoom.us/join?confno=⟨confno⟩... More information at Zoom developer communityspotifyOpens Spotify links in the appSpotify for Developersspotify://track:⟨trackid⟩

Registering schemes Internet Engineering Task Force Best Current Practice (BCP) 35, Request for Comments (RFC) 7595, Guidelines and Registration Procedures for URI Schemes (updated by RFC 8615, Well-Known Uniform Resource Identifiers), defines the process for registering new URI scheme names. From time to time the process may change. The scheme registry maintains the mapping between scheme names and their specifications.

References

External links Official IANA Registry of URI Schemes More information, including many more schemes RFC Editor information on URI Generic Syntax