Determine which languages are activated on a SharePoint site with REST API

If you develop mobile applications which need to be multilingual, it will happen sooner or later that you wanted to know which languages are activated on your SharePoint sites.

To retrieve information about your SharePoint sites, your first instinct will be to use the REST API. To achieve this goal you typically call URLs such as :

By default when you call those URLs, not all properties available for the site are returned in the server response. Only a subset (called the default scalar property set) is included in the response as you can see in the sample below :

    AllowRssFeeds = 1;
    AlternateCssUrl = "";
    AppInstanceId = "00000000-0000-0000-0000-000000000000";
    Configuration = 0;
    Created = "2015-06-05T15:12:37.89";
    CustomMasterUrl = "/_catalogs/masterpage/seattle.master";
    Description = "A new description for the Contoso Team Site";
    DocumentLibraryCalloutOfficeWebAppPreviewersDisabled = 0;
    EnableMinimalDownload = 1;
    Id = "7e75f9bc-db75-4425-b934-86bdf913f9c5";
    IsMultilingual = 1;
    Language = 1033;
    LastItemModifiedDate = "2015-08-05T17:11:31Z";
    MasterUrl = "/_catalogs/masterpage/seattle.master";
    OverwriteTranslationsOnChange = 0;
    QuickLaunchEnabled = 1;
    RecycleBinEnabled = 1;
    ServerRelativeUrl = "/";
    SiteLogoUrl = "<null>";
    SyndicationEnabled = 1;
    Title = "Contoso Team Site";
    TreeViewEnabled = 0;
    UIVersion = 15;
    UIVersionConfigurationEnabled = 0;
    Url = "";
    WebTemplate = STS;
    "odata.editLink" = Web;
    "" = "";
    "odata.metadata" = "$metadata#SP.ApiData.Webs/@Element";
    "odata.type" = "SP.Web";

As you can see in the default scalar property set, we are able to know if the current site is multilingual or not (IsMultilingual = 1), but we don’t know which languages have been activated.

To retrieve the value we want, we need to modify our call to the REST API so that we have to include additional parameters in the querystring to specify which properties must be included in the server response.$select=Title,Url,IsMultilingual,SupportedUILanguageIds

When we execute that request, the server return the following response, and we now are able to know which languages (SupportedUILanguageIds) are used by our SharePoint site.

    IsMultilingual = 1;
    SupportedUILanguageIds =     (
    Title = "Contoso Team Site";
    Url = "";
    "odata.editLink" = Web;
    "" = "";
    "odata.metadata" = "$metadata#SP.ApiData.Webs/@Element&$select=Title,Url,IsMultilingual,SupportedUILanguageIds";
    "odata.type" = "SP.Web";

Note that although it’s very useful to be able to select which properties will be included in the server response, if you want to include all the default properties plus a new one (SupportedUILanguageIds in our case), you have to put the entire list in the querystring.

Many types in SharePoint REST API doesn’t include all available properties in their default scalar property set. If you need to know which properties are included and which are not, you can refer to the documentation (e.g.

1 thought on “Determine which languages are activated on a SharePoint site with REST API

  1. Marcia

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