diff --git a/content/content-formatting-examples/hextra/asciinema/index.md b/content/content-formatting-examples/hextra/asciinema/index.md
index 8160992..df7712e 100644
--- a/content/content-formatting-examples/hextra/asciinema/index.md
+++ b/content/content-formatting-examples/hextra/asciinema/index.md
@@ -23,7 +23,8 @@ Embeds an [asciinema](https://asciinema.org/) terminal recording player. The pla
 | `loop` | Loop playback | `false` |
 | `poster` | Poster/thumbnail specification | _(none)_ |
 | `markers` | Comma-separated time markers (e.g., `"5:Intro,10:Demo"`) | _(none)_ |
+| `filename` | Optional filename to display as a header | _(none)_ |
 
 **Example:**
 
-{{< hextra/asciinema file="demo.cast" speed="2" autoplay="true" loop="true" >}}
+{{< hextra/asciinema file="demo.cast" speed="2" autoplay="true" loop="true" filename="terminal-session.cast" >}}
diff --git a/content/content-formatting-examples/hextra/jupyter/index.md b/content/content-formatting-examples/hextra/jupyter/index.md
index 07bb72a..bff70dc 100644
--- a/content/content-formatting-examples/hextra/jupyter/index.md
+++ b/content/content-formatting-examples/hextra/jupyter/index.md
@@ -18,7 +18,8 @@ Renders a Jupyter Notebook (`.ipynb`) as code blocks and Markdown cells.
 |-----------|-------------|---------|
 | positional | Path or URL to the `.ipynb` file | _(required)_ |
 | `allowUnsafeHTML` | Set to `"true"` to render raw HTML from notebook outputs | `false` |
+| `filename` | Optional filename to display as a header | _(none)_ |
 
 **Example:**
 
-{{% hextra/jupyter "example-notebook.ipynb" %}}
+{{% hextra/jupyter "example-notebook.ipynb" filename="analysis.ipynb" %}}
diff --git a/content/content-formatting-examples/markdown/code.md b/content/content-formatting-examples/markdown/code.md
index bc13b0b..210adec 100644
--- a/content/content-formatting-examples/markdown/code.md
+++ b/content/content-formatting-examples/markdown/code.md
@@ -10,4 +10,12 @@ draft: true
 This is a code block.
 ```
 
+### Code block with filename
+
+```go {filename="main.go"}
+package main
+import "fmt"
+func main() { fmt.Println("hello") }
+```
+
 Inline code like `var foo = "bar";` is supported.