diff --git a/README.md b/README.md
index 44e43f8..1b0f2de 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ Certain sites may display missing images or encounter formatting issues. This ca
 - [x] Mac OS binary
 - [x] Windows binary (Untested)
 - [x] Remove most of the ads (unexpected side effect)
-- [ ] Basic Auth
+- [x] Basic Auth
 
 ## Installation
 
@@ -73,3 +73,4 @@ http://localhost:8080/debug/https://www.google.com
 | `PREFORK` | Spawn multiple server instances | `false` |
 | `USER_AGENT` | User agent to emulate | `Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)` |
 | `X_FORWARDED_FOR` | IP Forwarder address | `66.249.66.1` |
+| `USERPASS` | Enables Basic Auth, format `admin:123456` |  |
diff --git a/cmd/main.go b/cmd/main.go
index 72332e7..15427b0 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -5,8 +5,10 @@ import (
 	"log"
 	"os"
 	"strconv"
+	"strings"
 
 	"github.com/gofiber/fiber/v2"
+	"github.com/gofiber/fiber/v2/middleware/basicauth"
 )
 
 func main() {
@@ -18,6 +20,16 @@ func main() {
 		},
 	)
 
+	userpass := os.Getenv("USERPASS")
+	if userpass != "" {
+		userpass := strings.Split(userpass, ":")
+		app.Use(basicauth.New(basicauth.Config{
+			Users: map[string]string{
+				userpass[0]: userpass[1],
+			},
+		}))
+	}
+
 	app.Get("/", handlers.Form)
 	app.Get("raw/*", handlers.Raw)
 	app.Get("api/*", handlers.Api)