Yottaa Inc. http://www.yottaa.com

An Experts Guideto making a website slow!!!

April 27th, 2012

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Agenda

• The Web… Its complicated• Things that make a website slow• Human factors of web performance• How can you make your website faster?• Tweet

– @rockstarapps– @yottaa

THE WEB… ITS COMPLICATED

© 2011 Yottaa Inc. All Rights Reserved. 3

In between your visitors and you

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100+ factors…

THINGS THAT MAKE YOUR WEBSITE SLOW

© 2011 Yottaa Inc. All Rights Reserved. 5

Lots of Requests

• Product owners want rich websites– Rich in User Experience– Rich in Visual Presentation

• Achieving richness requires more resources to be downloaded to the client– CSS– HTML– JavaScript– Images

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Fat Resources

• Many of the resources that you need to load can be made fatter than required– HTML, CSS, JavaScript – Add lots of

comments and white space– Images

• Use images that are larger than displayed on the webpage

• Always use the highest quality settings

• Turn off gzip compression on your server

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Bad Servers

• There are many things that can make your servers slow– Poorly written code– Bad database design– Sharing a server with others– Old Servers– Not enough memory– Slow hard drives

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Randomness

• This is one of the hard things to add your site to make it slow.– Some of your users will experience a slow

website• It only takes one resource to slow down

your website.

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Do not use caching

• The web allows you to specify which resources the browser will cache on the visitor’s machine

• Not specifying cache control correctly means the browser will need to load resources for every page and

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3rd Party Plugins

• Bloggers love to make their websites slow using plugins.– Twitter, Facebook, Google Plus, LinkedIn– Photo plugins…

• Not utilizing asynchronous loading of 3rd party resources.

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Other things you can do

• Redirect from www to non-www using client-side– Use a 301 redirection instead of 302

• 404s – usually take longer• Run JavaScript code while your page is loading.• Only look at how fast your site is from your desktop• Think your website is fast enough• Do not test your websites performance• Think your developers would never do any of these

things

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HUMAN FACTORS

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Human Factors

• Desire for Social • Desire to increase functionality• Lack of understanding about the impact of performance

on the business• Lack of understanding about what makes a website slow

or fast• Lack of the ability to determine if there is a problem• Lack of time to test and fix issues

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HOW CAN YOU MAKE YOUR WEBSITE FASTER?

© 2011 Yottaa Inc. All Rights Reserved. 15

THANK YOU FOR YOUR TIME

Bob (Buffone)

CTO/Co-founder

www.yottaa.com

Come and check us out in the vendor area!!!

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