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This extension for the Chrome browser downloads your Facebook chats to the computer in various formats: plain text, HTML, ZIP archive and CSV file. The easiest way to save Facebook Messenger chat history.
Messages Saver for FacebookDownload Facebook chats to your computer in various formats.
This extension for the Chrome browser downloads WhatsApp chats to the computer from https://web.whatsapp.com/
The extension tries grabbing the chat's media if they still exist in the phone.
You can save a chat in HTML or CSV format.
Backup WhatsApp ChatsDownloads WhatsApp chats from https://web.whatsapp.com/