diff --git a/extensions/web/pkg/config/config.go b/extensions/web/pkg/config/config.go
index 3c403d0bad..dbc7feee05 100644
--- a/extensions/web/pkg/config/config.go
+++ b/extensions/web/pkg/config/config.go
@@ -32,22 +32,22 @@ type Asset struct {
 
 // WebConfig defines the available web configuration for a dynamically rendered config.json.
 type WebConfig struct {
-	Server        string                 `json:"server" yaml:"server" env:"OCIS_URL;WEB_UI_CONFIG_SERVER"`
-	Theme         string                 `json:"theme" yaml:"theme" env:""`
-	Version       string                 `json:"version" yaml:"version" env:"WEB_UI_CONFIG_VERSION"`
-	OpenIDConnect OIDC                   `json:"openIdConnect" yaml:"oids"`
+	Server        string                 `json:"server,omitempty" yaml:"server" env:"OCIS_URL;WEB_UI_CONFIG_SERVER"`
+	Theme         string                 `json:"theme,omitempty" yaml:"theme" env:""`
+	Version       string                 `json:"version,omitempty" yaml:"version" env:"WEB_UI_CONFIG_VERSION"`
+	OpenIDConnect OIDC                   `json:"openIdConnect,omitempty" yaml:"oids"`
 	Apps          []string               `json:"apps" yaml:"apps"`
-	ExternalApps  []ExternalApp          `json:"external_apps" yaml:"external_apps"`
-	Options       map[string]interface{} `json:"options" yaml:"options"`
+	ExternalApps  []ExternalApp          `json:"external_apps,omitempty" yaml:"external_apps"`
+	Options       map[string]interface{} `json:"options,omitempty" yaml:"options"`
 }
 
 // OIDC defines the available oidc configuration
 type OIDC struct {
-	MetadataURL  string `json:"metadata_url" yaml:"metadata_url" env:"WEB_OIDC_METADATA_URL"`
-	Authority    string `json:"authority" yaml:"authority" env:"OCIS_URL;WEB_OIDC_AUTHORITY"`
-	ClientID     string `json:"client_id" yaml:"client_id" env:"WEB_OIDC_CLIENT_ID"`
-	ResponseType string `json:"response_type" yaml:"response_type" env:"WEB_OIDC_RESPONSE_TYPE"`
-	Scope        string `json:"scope" yaml:"scope" env:"WEB_OIDC_SCOPE"`
+	MetadataURL  string `json:"metadata_url,omitempty" yaml:"metadata_url" env:"WEB_OIDC_METADATA_URL"`
+	Authority    string `json:"authority,omitempty" yaml:"authority" env:"OCIS_URL;WEB_OIDC_AUTHORITY"`
+	ClientID     string `json:"client_id,omitempty" yaml:"client_id" env:"WEB_OIDC_CLIENT_ID"`
+	ResponseType string `json:"response_type,omitempty" yaml:"response_type" env:"WEB_OIDC_RESPONSE_TYPE"`
+	Scope        string `json:"scope,omitempty" yaml:"scope" env:"WEB_OIDC_SCOPE"`
 }
 
 // ExternalApp defines an external web app.
@@ -59,15 +59,15 @@ type OIDC struct {
 //	  }
 //  }
 type ExternalApp struct {
-	ID   string `json:"id" yaml:"id"`
-	Path string `json:"path" yaml:"path"`
+	ID   string `json:"id,omitempty" yaml:"id"`
+	Path string `json:"path,omitempty" yaml:"path"`
 	// Config is completely dynamic, because it depends on the extension
-	Config map[string]interface{} `json:"config" yaml:"config"`
+	Config map[string]interface{} `json:"config,omitempty" yaml:"config"`
 }
 
 // ExternalAppConfig defines an external web app configuration.
 type ExternalAppConfig struct {
-	URL string `json:"url" yaml:"url" env:""`
+	URL string `json:"url,omitempty" yaml:"url" env:""`
 }
 
 // Web defines the available web configuration.