diff --git a/context.go b/context.go
new file mode 100644
index 0000000..5b8813d
--- /dev/null
+++ b/context.go
@@ -0,0 +1,20 @@
+package tht
+
+import "surdeus.su/core/xgo/xmodules/httpx"
+import "surdeus.su/util/tht/mdx"
+
+// Context key type for internal usage.
+type CKey string
+
+const (
+	KeyValues CKey = "values"
+)
+
+type ContextValues struct {
+	Request *httpx.Request
+	Global any
+	Markdown *mdx.Markdown
+	IsIndex bool
+	IndexSuffix string
+	Ext string
+}
diff --git a/go.mod b/go.mod
index aed22e4..f491278 100644
--- a/go.mod
+++ b/go.mod
@@ -7,5 +7,5 @@ require (
 	github.com/gomarkdown/markdown v0.0.0-20240419095408-642f0ee99ae2
 	surdeus.su/core/cli v0.1.2
 	surdeus.su/core/xgo v0.6.1
-	surdeus.su/util/tpp v0.3.2
+	surdeus.su/util/tpp v0.3.3
 )
diff --git a/go.sum b/go.sum
index b5b770d..c84df67 100644
--- a/go.sum
+++ b/go.sum
@@ -12,3 +12,5 @@ surdeus.su/core/xgo v0.6.1 h1:ssF7LrTyANmIVIqO6E2TprueNDup11/NWH8dbzue4VQ=
 surdeus.su/core/xgo v0.6.1/go.mod h1:6C/AHbjfvAMvt3TOzLB4eIZ40eU3ahJXtdY+kr4yXoc=
 surdeus.su/util/tpp v0.3.2 h1:ebcnEcY+4tgB4a6trs4GBd2CJjrZJaPKh3i5RKQf8/U=
 surdeus.su/util/tpp v0.3.2/go.mod h1:rXOVXwvdc7FxRGK/Smy03AXLQiet4N+2imFesic9Vzw=
+surdeus.su/util/tpp v0.3.3 h1:GEyOlt4M1jE9q9HSPAds9X85qEc/FUpD/M90vlROgLw=
+surdeus.su/util/tpp v0.3.3/go.mod h1:rXOVXwvdc7FxRGK/Smy03AXLQiet4N+2imFesic9Vzw=
diff --git a/handler.go b/handler.go
index 0914f98..2ef2326 100644
--- a/handler.go
+++ b/handler.go
@@ -70,9 +70,13 @@ func DefaultPP(mod string) *tpp.Preprocessor {
 		s.SetImports(xmodules.Modules)
 		s.EnableFileImport(true)
 
-		s.Add("__http_request__", ctx.Value(KeyRequest))
-		s.Add("__global__", ctx.Value(KeyGlobal))
-		s.Add("__markdown__", ctx.Value(KeyMarkdown))
+		vals := ctx.Value(KeyValues).(*ContextValues)
+		s.Add("__http_request__", vals.Request)
+		s.Add("__global__", vals.Global)
+		s.Add("__markdown__", vals.Markdown)
+		s.Add("__is_index__", vals.IsIndex)
+		s.Add("__index_suffix__", vals.IndexSuffix)
+		s.Add("__tpp_ext__", vals.Ext)
 	}).SetPreCode(func(ctx context.Context) []byte {
 		return []byte(`
 			markdown := func(...args) {
@@ -81,9 +85,14 @@ func DefaultPP(mod string) *tpp.Preprocessor {
 			__http__ := immutable({
 				request : __http_request__
 			})
+
 			context.http = __http__
 			context.pp = pp
 			context.global = __global__
+			context.is_index = __is_index__
+			context.index_suffix = __index_suffix__
+			context.tpp_ext = __tpp_ext__
+
 			import("./pre")(context)
 		`)
 	}).SetPostCode(func(ctx context.Context) []byte {
@@ -104,6 +113,7 @@ func (h *Handler) ServeHTTP(
 	w http.ResponseWriter,
 	r *http.Request,
 ) {
+	isIndex := false
 	shouldProcess := true
 	urlPath := r.URL.Path
 	// Cleaning URL path to prevent injections.
@@ -125,6 +135,7 @@ func (h *Handler) ServeHTTP(
 				filePath,
 				h.indexSuffix,
 			)
+			isIndex = true
 		}
 	}
 
@@ -147,26 +158,22 @@ func (h *Handler) ServeHTTP(
 		return
 	}
 
+
 	ctx := context.WithValue(
 		r.Context(),
-		KeyRequest,
-		&httpx.Request{
-			Request: r,
+		KeyValues,
+		&ContextValues{
+			Request: &httpx.Request{
+				Request: r,
+			},
+			Global: h.global,
+			Markdown: h.md,
+			IsIndex: isIndex,
+			IndexSuffix: h.indexSuffix,
+			Ext: h.ext,
 		},
 	)
 
-	ctx = context.WithValue(
-		ctx,
-		KeyGlobal,
-		h.global,
-	)
-
-	ctx = context.WithValue(
-		ctx,
-		KeyMarkdown,
-		h.md,
-	)
-
 	// Setting before the code to let it change own
 	// content type?
 	fileExt := filepath.Ext(filePath)
diff --git a/tool.go b/tool.go
index 3203c03..3d6490d 100644
--- a/tool.go
+++ b/tool.go
@@ -9,15 +9,6 @@ import (
 	"log"
 )
 
-// Context key type for internal usage.
-type CKey string
-
-const (
-	KeyRequest CKey = "http-request"
-	KeyGlobal = "global"
-	KeyMarkdown = "markdown"
-	KeyHTML = "html"
-)
 
 // Simple PHP-like server implementation.
 var Tool = mtool.T("tht").Func(func(flags *mtool.Flags) {