'archiver' is formed in modern English from 'archive' + the agentive suffix '-er'. 'archive' originates from French 'archive', ultimately from Latin 'archivum' and Greek 'arkheion', where the Greek root meant 'public office' or 'official records'.

'arkheion' (Greek) became Latin 'archivum', passed into Old French as 'archive', entered Middle English as 'archive', and the English agentive formation produced 'archiver' meaning a person or thing related to archives.

Initially related to 'a public office' or 'official records' in Greek and Latin, the sense developed into 'a place or collection of records' and then into 'one who manages or a tool that creates archives' in modern usage.