diff --git a/bootstrap/init.go b/bootstrap/init.go
index 0f93399..f959d5e 100644
--- a/bootstrap/init.go
+++ b/bootstrap/init.go
@@ -12,6 +12,7 @@ import (
 	"github.com/cloudreve/Cloudreve/v3/pkg/email"
 	"github.com/cloudreve/Cloudreve/v3/pkg/mq"
 	"github.com/cloudreve/Cloudreve/v3/pkg/task"
+	"github.com/cloudreve/Cloudreve/v3/pkg/wopi"
 	"github.com/gin-gonic/gin"
 	"io/fs"
 )
@@ -95,6 +96,12 @@ func Init(path string, statics fs.FS) {
 				auth.Init()
 			},
 		},
+		{
+			"master",
+			func() {
+				wopi.Init()
+			},
+		},
 	}
 
 	for _, dependency := range dependencies {
diff --git a/models/defaults.go b/models/defaults.go
index 3090016..7246980 100644
--- a/models/defaults.go
+++ b/models/defaults.go
@@ -115,4 +115,8 @@ Neue',Helvetica,Arial,sans-serif; box-sizing: border-box; font-size: 14px; verti
 	{Name: "office_preview_service", Value: "https://view.officeapps.live.com/op/view.aspx?src={$src}", Type: "preview"},
 	{Name: "show_app_promotion", Value: "1", Type: "mobile"},
 	{Name: "public_resource_maxage", Value: "86400", Type: "timeout"},
+	{Name: "wopi_enabled", Value: "0", Type: "wopi"},
+	{Name: "wopi_endpoint", Value: "", Type: "wopi"},
+	{Name: "wopi_max_size", Value: "52428800", Type: "wopi"},
+	{Name: "wopi_session_timeout", Value: "43200", Type: "wopi"},
 }
diff --git a/pkg/serializer/setting.go b/pkg/serializer/setting.go
index 2c1a345..7e4ce00 100644
--- a/pkg/serializer/setting.go
+++ b/pkg/serializer/setting.go
@@ -7,22 +7,23 @@ import (
 
 // SiteConfig 站点全局设置序列
 type SiteConfig struct {
-	SiteName             string `json:"title"`
-	LoginCaptcha         bool   `json:"loginCaptcha"`
-	RegCaptcha           bool   `json:"regCaptcha"`
-	ForgetCaptcha        bool   `json:"forgetCaptcha"`
-	EmailActive          bool   `json:"emailActive"`
-	Themes               string `json:"themes"`
-	DefaultTheme         string `json:"defaultTheme"`
-	HomepageViewMethod   string `json:"home_view_method"`
-	ShareViewMethod      string `json:"share_view_method"`
-	Authn                bool   `json:"authn"`
-	User                 User   `json:"user"`
-	ReCaptchaKey         string `json:"captcha_ReCaptchaKey"`
-	CaptchaType          string `json:"captcha_type"`
-	TCaptchaCaptchaAppId string `json:"tcaptcha_captcha_app_id"`
-	RegisterEnabled      bool   `json:"registerEnabled"`
-	AppPromotion         bool   `json:"app_promotion"`
+	SiteName             string   `json:"title"`
+	LoginCaptcha         bool     `json:"loginCaptcha"`
+	RegCaptcha           bool     `json:"regCaptcha"`
+	ForgetCaptcha        bool     `json:"forgetCaptcha"`
+	EmailActive          bool     `json:"emailActive"`
+	Themes               string   `json:"themes"`
+	DefaultTheme         string   `json:"defaultTheme"`
+	HomepageViewMethod   string   `json:"home_view_method"`
+	ShareViewMethod      string   `json:"share_view_method"`
+	Authn                bool     `json:"authn"`
+	User                 User     `json:"user"`
+	ReCaptchaKey         string   `json:"captcha_ReCaptchaKey"`
+	CaptchaType          string   `json:"captcha_type"`
+	TCaptchaCaptchaAppId string   `json:"tcaptcha_captcha_app_id"`
+	RegisterEnabled      bool     `json:"registerEnabled"`
+	AppPromotion         bool     `json:"app_promotion"`
+	WopiExts             []string `json:"wopi_exts"`
 }
 
 type task struct {
@@ -60,7 +61,7 @@ func checkSettingValue(setting map[string]string, key string) string {
 }
 
 // BuildSiteConfig 站点全局设置
-func BuildSiteConfig(settings map[string]string, user *model.User) Response {
+func BuildSiteConfig(settings map[string]string, user *model.User, wopiExts []string) Response {
 	var userRes User
 	if user != nil {
 		userRes = BuildUser(*user)
@@ -85,6 +86,7 @@ func BuildSiteConfig(settings map[string]string, user *model.User) Response {
 			TCaptchaCaptchaAppId: checkSettingValue(settings, "captcha_TCaptcha_CaptchaAppId"),
 			RegisterEnabled:      model.IsTrueVal(checkSettingValue(settings, "register_enabled")),
 			AppPromotion:         model.IsTrueVal(checkSettingValue(settings, "show_app_promotion")),
+			WopiExts:             wopiExts,
 		}}
 	return res
 }
diff --git a/pkg/serializer/setting_test.go b/pkg/serializer/setting_test.go
index 04fb8f6..680edb6 100644
--- a/pkg/serializer/setting_test.go
+++ b/pkg/serializer/setting_test.go
@@ -18,10 +18,10 @@ func TestCheckSettingValue(t *testing.T) {
 func TestBuildSiteConfig(t *testing.T) {
 	asserts := assert.New(t)
 
-	res := BuildSiteConfig(map[string]string{"not exist": ""}, &model.User{})
+	res := BuildSiteConfig(map[string]string{"not exist": ""}, &model.User{}, nil)
 	asserts.Equal("", res.Data.(SiteConfig).SiteName)
 
-	res = BuildSiteConfig(map[string]string{"siteName": "123"}, &model.User{})
+	res = BuildSiteConfig(map[string]string{"siteName": "123"}, &model.User{}, nil)
 	asserts.Equal("123", res.Data.(SiteConfig).SiteName)
 
 	// 非空用户
@@ -29,7 +29,7 @@ func TestBuildSiteConfig(t *testing.T) {
 		Model: gorm.Model{
 			ID: 5,
 		},
-	})
+	}, nil)
 	asserts.Len(res.Data.(SiteConfig).User.ID, 4)
 }
 
diff --git a/pkg/wopi/discovery.go b/pkg/wopi/discovery.go
index 21c0d92..8f53732 100644
--- a/pkg/wopi/discovery.go
+++ b/pkg/wopi/discovery.go
@@ -4,7 +4,9 @@ import (
 	"encoding/xml"
 	"fmt"
 	"github.com/cloudreve/Cloudreve/v3/pkg/cache"
+	"github.com/cloudreve/Cloudreve/v3/pkg/util"
 	"net/http"
+	"strings"
 )
 
 type ActonType string
@@ -19,6 +21,27 @@ const (
 	DiscoverRefreshDuration  = 24 * 3600 // 24 hrs
 )
 
+func (c *client) AvailableExts() []string {
+	if err := c.checkDiscovery(); err != nil {
+		util.Log().Error("Failed to check WOPI discovery: %s", err)
+		return nil
+	}
+
+	c.mu.RUnlock()
+	defer c.mu.RUnlock()
+	exts := make([]string, 0, len(c.actions))
+	for ext, actions := range c.actions {
+		_, previewable := actions[string(ActionPreview)]
+		_, editable := actions[string(ActionEdit)]
+
+		if previewable || editable {
+			exts = append(exts, strings.TrimPrefix(ext, "."))
+		}
+	}
+
+	return exts
+}
+
 // checkDiscovery checks if discovery content is needed to be refreshed.
 // If so, it will refresh discovery content.
 func (c *client) checkDiscovery() error {
diff --git a/pkg/wopi/wopi.go b/pkg/wopi/wopi.go
index 999dc56..ba0211a 100644
--- a/pkg/wopi/wopi.go
+++ b/pkg/wopi/wopi.go
@@ -6,6 +6,7 @@ import (
 	model "github.com/cloudreve/Cloudreve/v3/models"
 	"github.com/cloudreve/Cloudreve/v3/pkg/cache"
 	"github.com/cloudreve/Cloudreve/v3/pkg/request"
+	"github.com/cloudreve/Cloudreve/v3/pkg/util"
 	"net/url"
 	"path"
 	"strings"
@@ -13,11 +14,18 @@ import (
 )
 
 type Client interface {
+	// NewSession creates a new document session with access token.
+	NewSession(user *model.User, file *model.File, action ActonType) (*Session, error)
+	// AvailableExts returns a list of file extensions that are supported by WOPI.
+	AvailableExts() []string
 }
 
 var (
 	ErrActionNotSupported = errors.New("action not supported by current wopi endpoint")
 
+	Default   Client
+	DefaultMu sync.Mutex
+
 	queryPlaceholders = map[string]string{
 		"BUSINESS_USER":           "",
 		"DC_LLCC":                 "lng",
@@ -38,6 +46,24 @@ const (
 	wopiSrcPlaceholder = "WOPI_SOURCE"
 )
 
+// Init initializes a new global WOPI client.
+func Init() {
+	settings := model.GetSettingByNames("wopi_endpoint", "wopi_enabled")
+	if !model.IsTrueVal(settings["wopi_enabled"]) {
+		return
+	}
+
+	wopiClient, err := NewClient(settings["wopi_endpoint"], cache.Store, request.NewClient())
+	if err != nil {
+		util.Log().Error("Failed to initialize WOPI client: %s", err)
+		return
+	}
+
+	DefaultMu.Lock()
+	Default = wopiClient
+	DefaultMu.Unlock()
+}
+
 type client struct {
 	cache cache.Driver
 	http  request.Client
@@ -53,6 +79,21 @@ type config struct {
 	discoveryEndpoint *url.URL
 }
 
+func NewClient(endpoint string, cache cache.Driver, http request.Client) (Client, error) {
+	endpointUrl, err := url.Parse(endpoint)
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse WOPI endpoint: %s", err)
+	}
+
+	return &client{
+		cache: cache,
+		http:  http,
+		config: config{
+			discoveryEndpoint: endpointUrl,
+		},
+	}, nil
+}
+
 func (c *client) NewSession(user *model.User, file *model.File, action ActonType) (*Session, error) {
 	if err := c.checkDiscovery(); err != nil {
 		return nil, err
@@ -79,6 +120,8 @@ func (c *client) NewSession(user *model.User, file *model.File, action ActonType
 	return nil, nil
 }
 
+// Replace query parameters in action URL template. Some placeholders need to be replaced
+// at the frontend, e.g. `THEME_ID`.
 func generateActionUrl(src string, fileSrc string) (*url.URL, error) {
 	src = strings.ReplaceAll(src, "<", "")
 	src = strings.ReplaceAll(src, ">", "")
diff --git a/routers/controllers/site.go b/routers/controllers/site.go
index d462a9d..c4a3508 100644
--- a/routers/controllers/site.go
+++ b/routers/controllers/site.go
@@ -5,6 +5,7 @@ import (
 	"github.com/cloudreve/Cloudreve/v3/pkg/conf"
 	"github.com/cloudreve/Cloudreve/v3/pkg/serializer"
 	"github.com/cloudreve/Cloudreve/v3/pkg/util"
+	"github.com/cloudreve/Cloudreve/v3/pkg/wopi"
 	"github.com/gin-gonic/gin"
 	"github.com/mojocn/base64Captcha"
 )
@@ -30,14 +31,19 @@ func SiteConfig(c *gin.Context) {
 		"show_app_promotion",
 	)
 
+	var wopiExts []string
+	if wopi.Default != nil {
+		wopiExts = wopi.Default.AvailableExts()
+	}
+
 	// 如果已登录，则同时返回用户信息和标签
 	user, _ := c.Get("user")
 	if user, ok := user.(*model.User); ok {
-		c.JSON(200, serializer.BuildSiteConfig(siteConfig, user))
+		c.JSON(200, serializer.BuildSiteConfig(siteConfig, user, wopiExts))
 		return
 	}
 
-	c.JSON(200, serializer.BuildSiteConfig(siteConfig, nil))
+	c.JSON(200, serializer.BuildSiteConfig(siteConfig, nil, wopiExts))
 }
 
 // Ping 状态检查页面