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- Herausgeber: Packt Publishing
- Kategorie: Fachliteratur
- Sprache: Englisch
- Veröffentlichungsjahr: 2013
PageSpeed is an important aspect of web design and site management. It is a Google measure of how well the site performs to technical measurements. PageSpeed can be measured using Google's own tool or a browser plugin. It is used to score sites in indices, and is important from a UI view as it forms a large part of the success of your site.Instant PageSpeed Optimization is a practical, hands-on guide that provides you with a number of clear, step-by-step exercises, which will help you to take advantage of the real power that is behind web optimization techniques, and give you a good grounding in using it in your websites.The book explores topics like HTML standards used for optimization, minifying scripts, and taking care of images, and solves the common errors that users do unknowingly. It will take you through a number of clear, practical recipes that will help you to take advantage of all the possible technologies to make your websitess efficient, fast, and accurate. You will not only learn basic standards to optimize your websites, but you will also learn some advanced level methods such as Apache handling, Flush methods, making AJAX cacheable, setting up browser caches, and reducing image size using CSS sprites.
If you want to take advantage of all the necessary methods to make your website faster and efficient, then this book is a must-have.
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Table of Contents
Instant PageSpeed Optimization
Instant PageSpeed Optimization
Copyright © 2013 Packt Publishing
All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.
Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.
Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.
First published: September 2013
Production Reference: 1240913
Published by Packt Publishing Ltd.
Livery Place
35 Livery Street
Birmingham B3 2PB, UK.
ISBN 978-1-84969-732-3
www.packtpub.com
Credits
Author
Sanjeev Jaiswal
Reviewer
Ravindran Navaneethan
Acquisition Editor
Akram Hussain
Commissioning Editor
Neha Nagwekar
Technical Editors
Jalasha D'costa
Kapil Hemnani
Copy Editors
Mradula Hegde
Laxmi Subramanian
Project Coordinator
Amey Sawant
Proofreader
Faye Coulman
Production Coordinator
Kirtee Shingan
Cover Work
Kirtee Shingan
Cover Image
Abhinash Sahu
About the Author
Sanjeev Jaiswal is a computer graduate with four years of industrial experience and more than six years of web development experience. He extensively uses Perl and GNU/Linux for his day-to-day work and also teaches Drupal and WordPress CMS to bloggers. He has worked closely with major clients such as CSC, IBM, and Motorola mobility.
Sanjeev loves teaching technical functionalities to engineering students and IT professionals and has been teaching since 2008. He founded AlienCoders (http://www.aliencoders.com)based on the principle of "learning through sharing" for Computer Science students and IT professionals in 2010, which became a huge hit in India among engineering students.
He usually uploads technical videos to YouTube on his channel "AlienCoders". Sanjeev has a huge fan base on his site and on YouTube because of his simple but effective way of teaching and his philanthropic nature toward students.
I would like to thank my parents for their moral support while writing these recipes till late into the night. I would also like to express deep thanks and gratitude to my best friend Ritesh Kamal, without whose efforts this book would quite possibly not have happened.
I would also like to thank all the mentors, friends, and supporters I've had over the years, especially my mentors Senthil KS, Siva Reddy Mudiyala, Michael Mueller, Manu Zacharia, Varghees Samraj, and the entire AlienCoder's team. There is not a chance I could be writing this book today without having learned from these people. It is because of them and a few my best friends, Ranjan Pandey, Rakesh Pandey, Pradeep Pant and others, that I achieved a set of seemingly impossible goals in an incredibly short period of time.
About the Reviewer
Ravindran Navaneethan is a software engineer from Hyderabad, India. He is a B.Tech graduate from the Government College of Technology, Coimbatore. He has more than 12 years of experience in software development and currently works at United Online Software Development (India) Pvt. Ltd.
Ravindran started his career as a Windows developer and later moved on to web development. He has hands-on experience in both Windows and web development and has managed small- to mid-sized development teams. Ravindran is interested in learning new programming languages and exploring various tools and technologies.
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Preface
If you are a web developer or website administrator/owner, sooner or later you will surely require the techniques to optimize your website by using various available resources, by tweaking server settings, and so on. This book will show you how to optimize the speed of your website through various common techniques.
What this book covers
Minimizing HTTP requests (Simple) shows you that lesser the number of requests, faster the website will be. This recipe will show you how to minimize such HTTP requests without hampering the website.
Adding an Expires or Cache-Control header (Simple) shows us that adding the Expires or Cache-Control header will make downloadable files cacheable and will save time in opening websites without any delay.
Following HTML standards (Simple) teaches us that by following proper HTML standards, we can reduce the number of warning and errors that browsers catch and make the website faster by using correct tags, elements, and so on.
Reducing DOM elements (Intermediate) demonstrates that the website will take less time if there are lesser DOM elements contained within it. We can reduce it significantly by removing unnecessary DOM elements through close observation.
Setting up CSS sprites (Intermediate) shows us that by using CSS codes to show images wherever required, we can save time and space. Using one large image is better than using several different images. It also shows us how to use the CSS sprites technique on it.
Enabling compression (Simple) shows us that compressing the file size over the network would reduce the time taken to send an HTTP request and get an HTTP response back.
Optimizing images (Simple) urges us to use an image format wisely. This recipe will deal with various ways to optimize an image for the site to run faster.
Minifying JavaScript and CSS files (Simple) introduces the concept of minification, which is the technique that one should use in the production of a website in order to reduce the size of the site and thus increasing its speed.
Setting up browser caching (Simple) explains that the browser cache depends more on the user than the website owner, and the Cache-Control header can be used for this purpose.
