diff --git a/routes/actions.go b/routes/actions.go
index 6024230..58d707a 100644
--- a/routes/actions.go
+++ b/routes/actions.go
@@ -11,7 +11,7 @@ import (
 	"github.com/tidwall/gjson"
 )
 
-func pixivPostRequest(r *fiber.Ctx, url, payload, token, csrf string, isJSON bool) error {
+func pixivPostRequest(r CompatRequest, url, payload, token, csrf string, isJSON bool) error {
 	requestBody := []byte(payload)
 
 	req, err := http.NewRequestWithContext(r.Context(), "POST", url, bytes.NewBuffer(requestBody))
@@ -63,7 +63,7 @@ func AddBookmarkRoute(w http.ResponseWriter, r CompatRequest) error {
 	csrf := session.GetCookie(r.Request, session.Cookie_CSRF)
 
 	if token == "" || csrf == "" {
-		return PromptUserToLoginPage(r)
+		return PromptUserToLoginPage(w, r)
 	}
 
 	id := r.Params("id")
@@ -82,7 +82,7 @@ func AddBookmarkRoute(w http.ResponseWriter, r CompatRequest) error {
 		return err
 	}
 
-	return r.SendString("Success")
+	return SendString(w, "Success")
 }
 
 func DeleteBookmarkRoute(w http.ResponseWriter, r CompatRequest) error {
@@ -90,7 +90,7 @@ func DeleteBookmarkRoute(w http.ResponseWriter, r CompatRequest) error {
 	csrf := session.GetCookie(r.Request, session.Cookie_CSRF)
 
 	if token == "" || csrf == "" {
-		return PromptUserToLoginPage(r)
+		return PromptUserToLoginPage(w, r)
 	}
 
 	id := r.Params("id")
@@ -105,7 +105,7 @@ func DeleteBookmarkRoute(w http.ResponseWriter, r CompatRequest) error {
 		return err
 	}
 
-	return r.SendString("Success")
+	return SendString(w, "Success")
 }
 
 func LikeRoute(w http.ResponseWriter, r CompatRequest) error {
@@ -113,7 +113,7 @@ func LikeRoute(w http.ResponseWriter, r CompatRequest) error {
 	csrf := session.GetCookie(r.Request, session.Cookie_CSRF)
 
 	if token == "" || csrf == "" {
-		return PromptUserToLoginPage(r)
+		return PromptUserToLoginPage(w, r)
 	}
 
 	id := r.Params("id")
@@ -127,5 +127,11 @@ func LikeRoute(w http.ResponseWriter, r CompatRequest) error {
 		return err
 	}
 
-	return r.SendString("Success")
+	return SendString(w, "Success")
 }
+
+func SendString(w http.ResponseWriter, text string) error {
+	w.Header().Set("content-type", "text/plain")
+	_, err :=  w.Write([]byte(text))
+	return err
+}
\ No newline at end of file
diff --git a/routes/artwork.go b/routes/artwork.go
index c5028d3..f4041cb 100644
--- a/routes/artwork.go
+++ b/routes/artwork.go
@@ -26,7 +26,7 @@ func ArtworkPage(w http.ResponseWriter, r CompatRequest) error {
 
 	// monkey patching. assuming illust.Images[_].Large is used
 	for _, img := range illust.Images {
-		PreloadImage(r, img.Large)
+		PreloadImage(w, img.Large)
 	}
 
 	return Render(w, r, Data_artwork{
@@ -39,6 +39,6 @@ func ArtworkPage(w http.ResponseWriter, r CompatRequest) error {
 	})
 }
 
-func PreloadImage(r *fiber.Ctx, url string) {
-	r.Response().Header.Add("Link", fmt.Sprintf("<%s>; rel=preload; as=image", url))
+func PreloadImage(w http.ResponseWriter, url string) {
+	w.Header().Add("Link", fmt.Sprintf("<%s>; rel=preload; as=image", url))
 }
diff --git a/routes/compat.go b/routes/compat.go
index bf795f1..5ac39e2 100644
--- a/routes/compat.go
+++ b/routes/compat.go
@@ -58,3 +58,12 @@ func (r CompatRequest) Params(name string, defaultValue ...string) string {
 		}
 	}
 }
+
+func RedirectToRoute(w http.ResponseWriter, r CompatRequest, path string, query_params map[string]string, code int) error {
+	query := url.Values{}
+	for k, v := range query_params {
+		query.Add(k, v)
+	}
+	http.Redirect(w, r.Request, path+query.Encode(), code)
+	return nil
+}
diff --git a/routes/index.go b/routes/index.go
index 63d9cfd..9d64f15 100644
--- a/routes/index.go
+++ b/routes/index.go
@@ -1,11 +1,11 @@
 package routes
 
 import (
+	"encoding/json"
 	"net/http"
 
 	"codeberg.org/vnpower/pixivfe/v2/core"
 	"codeberg.org/vnpower/pixivfe/v2/session"
-	"net/http"
 )
 
 func IndexPage(w http.ResponseWriter, r CompatRequest) error {
@@ -43,7 +43,7 @@ func Oembed(w http.ResponseWriter, r CompatRequest) error {
 	artistName := r.Query("a", "")
 	artistURL := r.Query("u", "")
 
-	data := fiber.Map{
+	data := map[string]any{
 		"version":       "1.0",
 		"embed_type":    "rich",
 		"provider_name": "PixivFE",
@@ -52,5 +52,5 @@ func Oembed(w http.ResponseWriter, r CompatRequest) error {
 		"author_url":    artistURL,
 	}
 
-	return r.JSON(data)
+	return json.NewEncoder(w).Encode(data)
 }
diff --git a/routes/personal.go b/routes/personal.go
index 3b22c8f..b6d27b8 100644
--- a/routes/personal.go
+++ b/routes/personal.go
@@ -18,32 +18,32 @@ func LoginUserPage(w http.ResponseWriter, r CompatRequest) error {
 	token := session.GetPixivToken(r.Request)
 
 	if token == "" {
-		return PromptUserToLoginPage(r)
+		return PromptUserToLoginPage(w, r)
 	}
 
 	// The left part of the token is the member ID
 	userId := strings.Split(token, "_")
 
-	r.Redirect("/users/" + userId[0])
+	http.Redirect(w, r.Request, "/users/" + userId[0], http.StatusSeeOther)
 	return nil
 }
 
 func LoginBookmarkPage(w http.ResponseWriter, r CompatRequest) error {
 	token := session.GetPixivToken(r.Request)
 	if token == "" {
-		return PromptUserToLoginPage(r)
+		return PromptUserToLoginPage(w, r)
 	}
 
 	// The left part of the token is the member ID
 	userId := strings.Split(token, "_")
 
-	r.Redirect("/users/" + userId[0] + "/bookmarks#checkpoint")
+	http.Redirect(w, r.Request, "/users/" + userId[0] + "/bookmarks#checkpoint", http.StatusSeeOther)
 	return nil
 }
 
 func FollowingWorksPage(w http.ResponseWriter, r CompatRequest) error {
 	if token := session.GetPixivToken(r.Request); token == "" {
-		return PromptUserToLoginPage(r)
+		return PromptUserToLoginPage(w, r)
 	}
 
 	mode := r.Query("mode", "all")
diff --git a/routes/rankingCalendar.go b/routes/rankingCalendar.go
index 449e6af..31aa8af 100644
--- a/routes/rankingCalendar.go
+++ b/routes/rankingCalendar.go
@@ -34,15 +34,17 @@ func parseDate(t time.Time) DateWrap {
 }
 
 func RankingCalendarPicker(w http.ResponseWriter, r CompatRequest) error {
-	mode := r.FormValue("mode", "daily")
-	date := r.FormValue("date", "")
+	mode := r.FormValue("mode")
+	if mode == "" {
+		mode = "daily"
+	}
+	date := r.FormValue("date")
 
-	return r.RedirectToRoute("/rankingCalendar", fiber.Map{
-		"queries": map[string]string{
+	return RedirectToRoute(w, r,"/rankingCalendar",  map[string]string{
 			"mode": mode,
 			"date": date,
-		},
-	})
+		
+	}, http.StatusFound)
 }
 
 func RankingCalendarPage(w http.ResponseWriter, r CompatRequest) error {
diff --git a/routes/render.go b/routes/render.go
index c5a26b4..29c90c7 100644
--- a/routes/render.go
+++ b/routes/render.go
@@ -4,7 +4,6 @@ import (
 	"io"
 	"log"
 	"net/http"
-	"net/url"
 	"reflect"
 	"strings"
 
diff --git a/routes/settings.go b/routes/settings.go
index a472f7f..049c3cb 100644
--- a/routes/settings.go
+++ b/routes/settings.go
@@ -163,7 +163,7 @@ func SettingsPage(w http.ResponseWriter, r CompatRequest) error {
 
 func SettingsPost(w http.ResponseWriter, r CompatRequest) error {
 	t := r.Params("type")
-	noredirect := r.FormValue("noredirect", "") == ""
+	noredirect := r.FormValue("noredirect") == ""
 	var err error
 
 	switch t {
@@ -199,5 +199,6 @@ func SettingsPost(w http.ResponseWriter, r CompatRequest) error {
 		return nil
 	}
 
-	return r.Redirect("/settings", http.StatusSeeOther)
+	http.Redirect(w, r.Request, "/settings", http.StatusSeeOther)
+	return nil
 }
diff --git a/routes/tag.go b/routes/tag.go
index 25a9761..a7570c2 100644
--- a/routes/tag.go
+++ b/routes/tag.go
@@ -55,21 +55,19 @@ func TagPage(w http.ResponseWriter, r CompatRequest) error {
 }
 
 func AdvancedTagPost(w http.ResponseWriter, r CompatRequest) error {
-	return r.RedirectToRoute("/tags", fiber.Map{
-		"queries": map[string]string{
-			"name":     r.Query("name", r.FormValue("name")),
-			"category": r.Query("category", "artworks"),
-			"order":    r.Query("order", "date_d"),
-			"mode":     r.Query("mode", "safe"),
-			"ratio":    r.Query("ratio"),
-			"page":     r.Query("page", "1"),
-			"wlt":      r.Query("wlt", r.FormValue("wlt")),
-			"wgt":      r.Query("wgt", r.FormValue("wgt")),
-			"hlt":      r.Query("hlt", r.FormValue("hlt")),
-			"hgt":      r.Query("hgt", r.FormValue("hgt")),
-			"tool":     r.Query("tool", r.FormValue("tool")),
-			"scd":      r.Query("scd", r.FormValue("scd")),
-			"ecd":      r.Query("ecd", r.FormValue("ecd")),
-		},
+	return RedirectToRoute(w, r,"/tags", map[string]string{
+		"name":     r.Query("name", r.FormValue("name")),
+		"category": r.Query("category", "artworks"),
+		"order":    r.Query("order", "date_d"),
+		"mode":     r.Query("mode", "safe"),
+		"ratio":    r.Query("ratio"),
+		"page":     r.Query("page", "1"),
+		"wlt":      r.Query("wlt", r.FormValue("wlt")),
+		"wgt":      r.Query("wgt", r.FormValue("wgt")),
+		"hlt":      r.Query("hlt", r.FormValue("hlt")),
+		"hgt":      r.Query("hgt", r.FormValue("hgt")),
+		"tool":     r.Query("tool", r.FormValue("tool")),
+		"scd":      r.Query("scd", r.FormValue("scd")),
+		"ecd":      r.Query("ecd", r.FormValue("ecd")),
 	}, http.StatusFound)
 }
diff --git a/routes/user.go b/routes/user.go
index 6918364..65bcd91 100644
--- a/routes/user.go
+++ b/routes/user.go
@@ -21,7 +21,7 @@ func fetchData(r CompatRequest, getTags bool) (userPageData, error) {
 	if _, err := strconv.Atoi(id); err != nil {
 		return userPageData{}, err
 	}
-	category := core.UserArtCategory(r.Request.Params("category", string(core.UserArt_Any)))
+	category := core.UserArtCategory(r.Params("category", string(core.UserArt_Any)))
 	err := category.Validate()
 	if err != nil {
 		return userPageData{}, err
diff --git a/session/cookie.go b/session/cookie.go
index 55245ab..7d680fa 100644
--- a/session/cookie.go
+++ b/session/cookie.go
@@ -51,7 +51,7 @@ func SetCookie(w http.ResponseWriter, name CookieName, value string) {
 		Value: value,
 		Path:  "/",
 		// expires in 30 days from now
-		Expires:  r.Context().Time().Add(30 * (24 * time.Hour)),
+		Expires:  time.Now().Add(30 * (24 * time.Hour)),
 		HttpOnly: true,
 		Secure:   true,
 		SameSite: http.SameSiteStrictMode, // bye-bye cross site forgery