dkim signature verifier — free browser tool | fatcousin

home

drop eml files or paste email headers · extract dkim-signature headers · parse signing domain and selector · retrieve public key via dns txt record lookup simulation · cryptographically verify signature using web crypto api · runs locally

input

drop forensic export

csv · json · jsonl · multiple files · local only

Select file

drop eml files or paste email headers · local only

limits

heuristic screener · vendor schema varies · not definitive proof

status

>ready