How to download the whole chat history in facebook?

[Sneha Dahoja]

I want to download the whole chat history with someone in Facebook, as its really irritating to read them by scrolling again and again
So is there any easy way of downloading that?please help..

[Gulabshah1990]

Start out by downloading and installing Facebook Chat History Manager as a Firefox add-on or Google Chrome extension. There’s still a little work ahead before they’re running smoothly, though.

On Google Chrome, go to Window -> Extensions -> [FbCHM] Options, as can be seen in the screenshot above. You’re now in the extension’s Options pane. On the left, select ‘Get Facebook ID‘.
On Firefox, go to Tools -> Facebook Chat History Manager -> Get Facebook ID.
After logging into your account and authorizing the Facebook application, you’ll be able to view your Facebook ID. This is a number unique to your Facebook account. Copy it to your clipboard; you’ll need it in the next step.

On Google Chrome, go to Window -> Extensions -> [FbCHM] Options -> Create Account.
On Firefox, go to Tools -> Facebook Chat History Manager -> Create Account.
Use the previously obtained Facebook ID to create your account. The passwords here do not have to match your Facebook log-in password. It’s solely to keep your chat logs safe. Because you’ll have to log in later on, and again whenever you want to browse your chat history, an easy to remember login name can speed this up. This is optional though.

After creating your account, the set-up process is complete. The browser extensions will quietly keep track of your Facebook chat history, and allow to access it later on.

The Google Chrome extension will place an icon on your address bar, as can be seen in the screenshot above. Clicking it will prompt you for your username and password, before sending you off to your chat logs.
On Firefox, simply go to Tools -> Facebook Chat History Manager ->View History. Here too, you’ll need to enter your account details.

The Facebook chat history viewer isn’t very pretty, but does what it’s meant to do. On the top bar, you can select a period; on the left, a friend. To view older conversations, select ‘previous‘, or use an input field to jump to a specific page.

[Naveen]

Follow the link

https://addons.mozilla.org/en-us/firefox...y-manager/

Do not forget to read.. how it works and usage!!