Easy to integrate Facebook login to your web application

<fb:login-button scope="public_profile,email" onlogin="checkLoginState();">
</fb:login-button>
<span id="status"></span>
<script type='text/javascript'>
function statusChangeCallback(response) {
    console.log('statusChangeCallback');
    console.log(response);
    if (response.status === 'connected') {
      testAPI();
    } else if (response.status === 'not_authorized') {
      document.getElementById('status').innerHTML = 'Please log ' +'into this app.';
    } else {
      document.getElementById('status').innerHTML = 'Please log ' +'into Facebook.';
    }
}
function checkLoginState() {
    FB.getLoginStatus(function(response) {  statusChangeCallback(response); });
}

window.fbAsyncInit = function() {
    FB.init({
        appId      : "FB_APP_ID", 
        cookie     : true,  // enable cookies to allow the server to access // the session
        xfbml      : true,  // parse social plugins on this page
        version    : 'v2.1' // use version 2.1
    });
    //FB.getLoginStatus(function(response) {  statusChangeCallback(response); });
};

(function(d, s, id) {
    var js, fjs = d.getElementsByTagName(s)[0];
    if (d.getElementById(id)) return;
    js = d.createElement(s); js.id = id;
    js.src = "//connect.facebook.net/en_US/sdk.js";
    fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));

function testAPI() {
    console.log('Welcome!  Fetching your information.... ');
    FB.api('/me', function(response) {
        console.log('Successful login for: ' + response.name);
        var name = response.name;
        var email = response.email;
        document.getElementById('status').innerHTML = 'Thanks for logging in, ' + response.email + '!';
    });
}
</script>

Facebook embed your website

Instead, I would try this site, iframehost, to install your Iframe and embed your blog.
Log in to Facebook.
Go to this page.
Click “install page tab.”
Choose the business page to which you want to embed your blog.
Click “authorize the tab application.”
In the bottom left-hand corner of the text box that appears, change the drop down menu to “only me.”
Beside “page source” click on “URL” and enter the URL you want to embed.
Change the tab name and image. You will also be able to change these later.
Click “Save Settings” and then allow the application to access your business page.
Go to your business page and check that your tab is working appropriately.

Ref: http://writerswin.com/new-options-to-embed-your-website-on-facebook/ 

How to download your profile from facebook?

1. Login to your FB account in http://facebook.com
2. Goto your Account -> Settings
3. Click Download as Copy & you have get mail from fb registered account
4. Check you mail the subject is " Your Facebook download is ready" and click the link
Ex: https://www.facebook.com/dyi?x=**************
5. You have get you full profile & uploaded photos, videos & wall everything will be get