diff --git a/README.md b/README.md
index 22ade27..51fa0b3 100644
--- a/README.md
+++ b/README.md
@@ -17,3 +17,17 @@ PublicKeyAlgo  : ECDSA
 "*.foo.balki.me"
 "E7"
 ```
+
+### Use without installing
+
+```
+go run go.balki.me/certinfo@latest foo.crt
+```
+
+```
+podman run -v $PWD:/w -w /w --rm golang go run go.balki.me/certinfo@latest foo.crt
+```
+
+```
+docker run -v $PWD:/w -w /w --rm golang go run go.balki.me/certinfo@latest foo.crt
+```