diff --git a/blog.janet b/blog.janet
index 9e83fe6..aa219b0 100644
--- a/blog.janet
+++ b/blog.janet
@@ -6,6 +6,14 @@
     (file/close f)
     content))
 
+(defn htmlspecialchars
+  [value]
+    (string/replace-all "\"" """
+      (string/replace-all "'" "'"
+        (string/replace-all "<" "&lt;" 
+          (string/replace-all ">" "&gt;"
+            (string/replace-all "&" "&amp;" value))))))
+
 (def md-to-ast
   "A custom markdown flavored grammar"
     ~{
@@ -52,6 +60,36 @@
 
         :main (some (* :block (? :end-of-line)))})
 
+(defn ast-to-html
+  [ast]
+    (string/join
+      (map
+        |(match $0
+           [:code-block lang value]
+           (string "<pre><code>" (htmlspecialchars value) "</code></pre>")
+           [:heading level value]
+           (string "<h" level ">" (htmlspecialchars value) "</h" level ">")
+           [:quote value]
+           (string "<blockquote>" (ast-to-html value) "</blockquote>")
+           [:hr]
+           "<hr/>"
+           [:line value]
+           (string "<p>" (ast-to-html value) "</p>")
+           [:text value]
+           (htmlspecialchars value)
+           [:italic value]
+           (string "<em>" (ast-to-html value) "</em>")
+           [:stroke value]
+           (string "<stroke>" (ast-to-html value) "</stroke>")
+           [:bold value]
+           (string "<strong>" (ast-to-html value) "</strong>")
+           [:code-line value]
+           (string "<code>" (ast-to-html value) "</code>")
+           _
+           (error (string "Invalid symbol: " (get $0 0))))
+        ast)
+      ""))
+
 (defn pp-ast
   "Pretty prints the Mardown AST (as provided by (peg/match md-to-ast))"
   [ast]
@@ -62,5 +100,5 @@
       (print "]"))))
 
 (defn main [bin & args]
-  (pp-ast (peg/match md-to-ast (read-from-file "raw/~blog/blog.md"))))
-  # (print (to-html (peg/match md-to-ast (read-from-file "raw/~notes/blog.md")))))
+  # (pp-ast (peg/match md-to-ast (read-from-file "raw/~blog/blog.md")))
+  (print (ast-to-html (peg/match md-to-ast (read-from-file "raw/~blog/blog.md")))))