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Page Speed and SEO

Page speed is a critical component in the search ranking algorithm. The time it takes for a webpage to load is a direct factor in user experience. Many tests have confirmed the value in page speed for users and thus is a direct signal of quality. This document will outline the "PageSpeed Ranking Function" and provide a course of action for improving the loading time of a website.

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Metadata and Page Details
Metadata and Page Details
Creator: Devin Peterson
Date: Created 01/02/2014
Subject: Pagespeed, User Experience, Web Development, UX, Conversion, Engagement
Publisher: DNM Int'l
Peer Review:
Citation: Peterson, D. (2014), "Pagespeed: Using Site Loading Time for Document Ranking", Retrieved , from

Why PageSpeed Matters

It's no secret that everyone prefers faster load times. Our fast-paced world demands more information processing in less time with every new development in technology. We have been conditioned to want information in a matter of microseconds and this expectation is becoming closer and closer to reality. From dial-up modems, to DSL, to fiber optics and eventually quantum computing, speed is a direct part of the web browsing experience. Tests have indicated that many users will leave a slow loading website before even discovering the content of the page. Users are also much more likely to return to faster loading websites than they are to slower loading sites.

The PageSpeed Ranking Function

The PageSpeed ranking function is coming soon. Below is a starting rough approximation.


How To Optimize Page Speed

Minify Resources

Minifying HTML, CSS and Script is an easy and effective way to reduce the byte size of any file. Every character in a file is equal to 1 byte and although a single byte does not significantly affect the load time of a page, often times a single page is needlessly using hundreds to thousands of extra characters and spaces.

Simple File Minimization Tips

Optimize Images

In most cases, the images on a webpage account for a large majority of the bytes and hence download time. Most images range from 5 kilobytes to 200 kilobytes and sometimes a lot more. There are several things you can do to reduce image size without sacrificing the quality of the image.

Losslessly Compressing Images

Yahoo! has a great tool that compresses images without affecting the quality at all. Simply upload your image to Smush It and get a losslessly compressed version of your image.

Image Optimization Tips

Leverage Browser Caching

Prioritize Above-The-Fold Content

Improve Server Response Time

There is not a lot you can do to improve your server response time, but you can monitor your server's status to make sure it has limited downtime. Uptime Robots provides a free and very effective service for monitoring your server response.

If your server does poorly (less than 98% uptime) you can often resquest to fix the problem and be placed on another server if it's available.

Prevent Render-Blocking Scripts

Optimize CSS Delivery

Enable Compression Using Gzip

Avoid Landing Page Redirects

Avoid Third Party Plugins

Use Asynchronous Scripts

Add the 'async' attribute to your scripts