diff --git a/src/gmi/tpl.go b/src/gmi/tpl.go
index 8220a49..e448afd 100644
--- a/src/gmi/tpl.go
+++ b/src/gmi/tpl.go
@@ -7,7 +7,9 @@ import (
 	"fmt"
 	"io"
 	"io/fs"
+	"mime"
 	"net/url"
+	"path"
 	"path/filepath"
 	"strconv"
 	"strings"
@@ -194,10 +196,12 @@ func (a *api) tplHandler() (gemini.Handler, error) {
 	) {
 
 		tplPath := strings.TrimPrefix(r.URL.Path, "/")
+		mimeType := mime.TypeByExtension(path.Ext(r.URL.Path))
 
 		ctx = mctx.Annotate(ctx,
 			"url", r.URL,
 			"tplPath", tplPath,
+			"mimeType", mimeType,
 		)
 
 		tpl := allTpls.Lookup(tplPath)
@@ -207,6 +211,10 @@ func (a *api) tplHandler() (gemini.Handler, error) {
 			return
 		}
 
+		if mimeType != "" {
+			rw.SetMediaType(mimeType)
+		}
+
 		buf := new(bytes.Buffer)
 
 		err := tpl.Execute(buf, renderer{
diff --git a/src/gmi/tpl/wtfpl.txt b/src/gmi/tpl/wtfpl.txt
new file mode 100644
index 0000000..ee7d6a5
--- /dev/null
+++ b/src/gmi/tpl/wtfpl.txt
@@ -0,0 +1,14 @@
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+                    Version 2, December 2004
+
+ Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
+
+ Everyone is permitted to copy and distribute verbatim or modified
+ copies of this license document, and changing it is allowed as long
+ as the name is changed.
+
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. You just DO WHAT THE FUCK YOU WANT TO.
+