Encoding template functions

These template functions encode, decode, and hash data. Use them to turn bytes into readable text, generate checksums, or prepare data for APIs that expect a specific encoding.

Home Assistant extends the Jinja2 template engine with many custom functions, filters, and tests. Each function on this page has its own page with detailed descriptions, parameters, and practical examples.

New to templates? Start with the templating documentation to learn the basics.

• Decode from base64 base64_decode Decodes a base64-encoded string.
• Encode to base64 base64_encode Encodes a string or bytes to a base64 string.
• Decode hex string to bytes from_hex Decodes a hexadecimal string into bytes.
• MD5 hash md5 Calculates the MD5 hash of a string.
• Pack value to bytes pack Packs a value into bytes using a Python struct format string.
• SHA1 hash sha1 Calculates the SHA1 hash of a string.
• SHA256 hash sha256 Calculates the SHA256 hash of a string.
• SHA512 hash sha512 Calculates the SHA512 hash of a string.
• Unpack bytes to value unpack Unpacks bytes into a value using a Python struct format string.