YM.dat
Read old Yahoo! Messenger .dat archives locally
What is YM.dat?
YM.dat is a tiny browser-based tool for reading old Yahoo! Messengerdat chat archives. It detects your Yahoo! ID from the filename, lets you enter the contact ID, decodes the conversation locally, and exports a clean text transcript. No uploads, no install, no account. Just your old chats coming back to life.
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