Auto Pagination on Blogger

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by Vardhman Jain, Software Engineer, Mountain View

Latency is a word you hear a lot at Google. We are always looking for ways to make our products faster, because we have consistently found that faster page loads mean more satisfied users. This post is the first of an occasional series that will discuss ways in which we’re working to make blogs load faster for all users.

A few months ago, we took a look at ways to improve the performance of Blogger blogs, and noticed that many pages — particularly search results pages, label pages and archive pages — were taking longer to load than they should.

This has lots of implications. Users suffer — pages take longer to load, and for anyone around the world who pays for their bandwidth, they can incur unnecessary charges as their browser downloads more content than needed. You suffer, because as latency increases, pageviews go down. (See here for a study Google did last year for this phenomenon at

Starting today, we’re rolling out a change that affects how we paginate webpages on Blogger. We will dynamically adjust how much content to send to the browser depending on (a) the amount of HTML on the page being requested (in kilobytes) and (b) the number of images on the page. Users can continue to use “older posts” and “newer posts” navigation elements to see additional posts.

For major changes like this, we do incremental roll-outs so we can monitor performance as they progress. We expect the change to be fully deployed over the next week, and once fully deployed, we expect to see several results:

  • pages will load faster
  • pageviews, if impacted at all, may increase

We will keep an eye on things, and if we see anything unexpected, we will update this post. Otherwise, keep blogging — and we’ll keep working to make your blog faster for you and your readers!

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