diff --git a/md-rs/src/main.rs b/md-rs/src/main.rs
index 4b5cea3..2da0cf1 100755
--- a/md-rs/src/main.rs
+++ b/md-rs/src/main.rs
@@ -30,6 +30,24 @@ fn main() {
         return;
     }
     let first_arg = args.first();
+    if let Some(first_arg) = first_arg {
+        if first_arg == "--help" || first_arg == "-h" {
+            println!(
+                r##"md.rs - Markdown render
+
+md.rs -h|--help
+
+cat README.md | md.rs
+md.rs cheat:
+md.rs cheat:xh
+md.rs README.md
+md.rs https://example.com/sample.md
+"##
+            );
+            return;
+        }
+    }
+
     match read_to_string(first_arg) {
         Ok(md) => {
             termimad::print_text(&md);
@@ -122,5 +140,5 @@ fn try_cheat_sheet(path: &str) -> Option<String> {
     None
 }
 
-// @SCRIPT-SIGNATURE-V1: yk-r1.ES256.20260413T002526+08:00.MEUCIQDtbn9VsvXD5i0CDDpX
-// vaa/uR8bjm5CuvKZFs9gIVFfxwIgYXGJkKom0g+uG6QB6jqi31d7Vtyg80SWmyRAi5aZCvk=
+// @SCRIPT-SIGNATURE-V1: yk-r1.ES256.20260413T003310+08:00.MEYCIQDcX8y+GB4tGpZvp0TG
+// TOk6LT/J4cFXYOYG88Q3hx4S9QIhAK2IGN/5paueKYKdqO6ikPji6N4LBf4ssbunCM87XyLS
diff --git a/script-meta-v2.json b/script-meta-v2.json
index 86a62de..4d30150 100644
--- a/script-meta-v2.json
+++ b/script-meta-v2.json
@@ -82,11 +82,11 @@
   },
   "md.rs": {
     "script_name": "md.rs",
-    "script_length": 4052,
-    "script_sha256": "eaf9e006406250ae6841b62ea75d751826e42562e6117b505b77fc9f594cdff5",
+    "script_length": 4391,
+    "script_sha256": "ccb11edad093e304ca01e0aca5d496c339f387d4e25dc89c6ffee25e0ea92968",
     "script_full_url": "https://git.hatter.ink/rust-scripts/scriptbase/raw/branch/main/md-rs/src/main.rs",
     "publish_time": 1775921621093,
-    "update_time": 1776011164981
+    "update_time": 1776011608049
   },
   "myip.rs": {
     "script_name": "myip.rs",
diff --git a/script-meta.json b/script-meta.json
index dffc681..c746746 100644
--- a/script-meta.json
+++ b/script-meta.json
@@ -46,8 +46,8 @@
   },
   "md-rs": {
     "script_name": "md-rs",
-    "script_length": 4052,
-    "script_sha256": "eaf9e006406250ae6841b62ea75d751826e42562e6117b505b77fc9f594cdff5"
+    "script_length": 4391,
+    "script_sha256": "ccb11edad093e304ca01e0aca5d496c339f387d4e25dc89c6ffee25e0ea92968"
   },
   "myip-rs": {
     "script_name": "myip-rs",