Method, device, and computer program product for document transmission

Embodiments of the present disclosure relate to a method, a device, and a computer program product for document transmission. The method includes: selecting a portion to be encoded from a document that comprises structured portions, wherein each of the structured portions comprises an identifier and data associated with the identifier; acquiring at least one structured portion of the portion to be encoded; performing the following operations for a corresponding structured portion of the at least one structured portion to encode the document: generating a hash value of data of the corresponding structured portion; determining whether a hash value repository comprises the hash value; and replacing, based on a determination that the hash value repository comprises the hash value, the data of the corresponding structured portion in the document with the hash value; and sending the encoded document to a receiver. This solution can reduce the bandwidth consumption of transmitting a document including structured data while ensuring that a receiver obtains required information, as well as potentially saving the storage space required by the receiver to store the received document.