NeosCMS EEL helper to encode strings to base64 TL;DR Install the package: composer require onedrop/base64 Encode prop = 'Bier' prop.@process.encode = ${Onedrop.Base64.encode(value)} // Qmllcg== Decode prop = 'Qmllcg==' prop.@process.decode = ${Onedrop.Base64.decode(value)} // Bier