hugo/docs/content/en/functions/fmt/Printf.md

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title	linkTitle	description	categories	keywords	menu	function	relatedFunctions	aliases
fmt.Printf	printf	Formats a string using the standard `fmt.Sprintf` function.	functions		docs parent functions	aliases returnType signatures printf string fmt.Printf FORMAT [INPUT]	fmt.Print fmt.Printf fmt.Println	/functions/printf

The documentation for Go's fmt package describes the structure and content of the format string.

{{ $var := "world" }}
{{ printf "Hello %s." $var }} → Hello world.

{{ $pi := 3.14159265 }}
{{ printf "Pi is approximately %.2f." $pi }} → 3.14

Use the printf function with the safeHTMLAttr function:

{{ $desc := "Eat at Joe's" }}
<meta name="description" {{ printf "content=%q" $desc | safeHTMLAttr }}>

Hugo renders this to:

<meta name="description" content="Eat at Joe's">