diff --git a/pages/common/cmark.md b/pages/common/cmark.md
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+# cmark
+
+> Converts CommonMark Markdown formatted text to other formats.
+
+- Render a Commonmark Markdown file to HTML:
+
+`cmark --to html {{filename.md}}`
+
+- Convert data from standard input to latex:
+
+`cmark --to latex`
+
+- Convert straight quotes to smart quotes:
+
+`cmark --smart --to html {{filename.md}}`
+
+- Validate utf8 characters:
+
+`cmark --validate-utf8 {{filename.md}}`