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<!doctype html>
<!--[if lt IE 7 ]> <html class="no-js ie6" lang="en"> <![endif]-->
<!--[if IE 7 ]> <html class="no-js ie7" lang="en"> <![endif]-->
<!--[if IE 8 ]> <html class="no-js ie8" lang="en"> <![endif]-->
<!--[if (gte IE 9)|!(IE)]><!--> <html class="no-js" lang="en" xmlns:fb="http://www.facebook.com/2008/fbml" xmlns:og="http://ogp.me/ns#"> <!--<![endif]-->
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name='description' content='{MetaDescription}'>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
# 1. Make sure you have nginx sub module compiled in
# nginx -V 2>&1 | grep --color=always '\-\-with\-http_sub_module'
# 2. add two directives below at HTTP level
# nginx.conf
http {
# ......
sub_filter '</head>' '<style type="text/css">html{ filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1); -webkit-filter: grayscale(100%); filter: url("data:image/svg+xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\'><filter id=\'grayscale\'><feColorMatrix type=\'matrix\' values=\'0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0\'/></filter></svg>#grayscale"); /* Firefox 10+, Firefox on Android */

Adding Open Graph metadata to Blogger is easy. Simply copy the code below and paste it into your template after the <header> tag.

A couple notes:

  • og:locale Should probably actually reflect the blog's locale instead of just being a hardcoded string. Unfortunately, Blogger only gives us en-us with a hyphen, instead of an underscore, so that won't work.
  • If you're using your blog as a personal profile, you may consider changing the second og:type from website to profile and adding your personal information
  • og:image Is only supplied if Blogger finds an image in the current post. However, not supplying og:image is invalid. You could provide an alternate image of your blog logo, or a Gravatar.
  • If you do something cool with this, I'd love to hear about it. pathawks@shortmail.com
<html>
<head>
<style type="text/css">
.help {}
#result { font-weight:bold; font-size: 24px;background-color:yellow;}
a:visited { color:blue; }
.main { font-size:22px; }
#title, #total,#str,#num { width:400px; height:2em;}
.help { cursor:pointer; }
#input-str { position:relative; }