MatrixAdapt | Logiciel de gestion d'Entreprise, Création et référencement des sites web

Seo Master present to you:

Last year, as part of Google’s initiative to make the web faster, we introduced Page Speed, a tool that gives developers suggestions to speed up web pages. It’s usually pretty straightforward for developers and webmasters to implement these suggestions by updating their web server configuration, HTML, JavaScript, CSS and images. But we thought we could make it even easier -- ideally these optimizations should happen with minimal developer and webmaster effort.

So today, we’re introducing a module for the Apache HTTP Server called mod_pagespeed to perform many speed optimizations automatically. We’re starting with more than 15 on-the-fly optimizations that address various aspects of web performance, including optimizing caching, minimizing client-server round trips and minimizing payload size. We’ve seen mod_pagespeed reduce page load times by up to 50% (an average across a rough sample of sites we tried) -- in other words, essentially speeding up websites by about 2x, and sometimes even faster.

(Video comparison of the AdSense blog site with and without mod_pagespeed)

Here are a few simple optimizations that are a pain to do manually, but that mod_pagespeed excels at:

• Making changes to the pages built by the Content Management Systems (CMS) with no need to make changes to the CMS itself,
• Recompressing an image when its HTML context changes to serve only the bytes required (typically tedious to optimize manually), and
• Extending the cache lifetime of the logo and images of your website to a year, while still allowing you to update these at any time.

We’re working with Go Daddy to get mod_pagespeed running for many of its 8.5 million customers. Warren Adelman, President and COO of Go Daddy, says:

"Go Daddy is continually looking for ways to provide our customers the best user experience possible. That's the reason we partnered with Google on the 'Make the Web Faster' initiative. Go Daddy engineers are seeing a dramatic decrease in load times of customers' websites using mod_pagespeed and other technologies provided. We hope to provide the technology to our customers soon - not only for their benefit, but for their website visitors as well.”

We’re also working with Cotendo to integrate the core engine of mod_pagespeed as part of their Content Delivery Network (CDN) service.

mod_pagespeed integrates as a module for the Apache HTTP Server, and we’ve released it as open-source for Apache for many Linux distributions. Download mod_pagespeed for your platform and let us know what you think on the project’s mailing list. We hope to work with the hosting, developer and webmaster community to improve mod_pagespeed and make the web faster.

By Richard Rabbat, ‘Make the Web Faster’ initiative2013, By: Seo Master

Seo Master present to you:

Kishore

Rahul

By Rahul Bansal and Kishore Simbili, PageSpeed Team

We spend a lot of time working to make the web faster. Last year, we introduced PageSpeed Service, an online service that automatically speeds up loading of web pages.

We are constantly working on new optimizations (rewriters) that can make pages load even faster. Along these lines, we are introducing a new rewriter called "Cache and Prioritize Visible Content". This rewriter enables users to start interacting with the web page and consuming the content much sooner. It accomplishes this by optimizing the page as a whole using the following web page-aware techniques and with minimal configuration needed:

• Make HTML cacheable. Typically, most web pages are not cached because they contain small amounts of personalized information or other non-cacheable data. This rewriter separates the non-cacheable portions from the HTML and enables caching for the rest of the content on PageSpeed servers. When the page is loaded, PageSpeed servers send the cacheable parts immediately while non-cacheable parts are fetched from the origin server & patched into the browser later.
• Prioritize visible content rendering. Rendering of a modern web page requires several network resources, but not all of them are needed right away. This rewriter automatically determines and prioritizes the content that is above the fold of the browser, so that it doesn’t have to compete with the rest of the page.
• Defer Javascript. JavaScript execution is deferred until page load so that it doesn’t block rendering of visible content.

Early deployment of these techniques has shown significant improvements in user-perceived page load times. Below is a filmstrip view that compares the loading of pages on Power Line, a US-based political commentary website.


Joe Malchow, Publisher of Power Line says "With this rewriter the most important bytes, our content, load first and fast. To our readers, Power Line appears to be completely instantaneous, prompting deeper and lengthier reading sessions and more profound engagement with the site."

This rewriter works best when the page content is mostly generated on the server rather than via Javascript and only small portions of it are personalized. To see how this rewriter would benefit your site, you can check it out here. If you are satisfied with the results, you can sign up for PageSpeed Service here. If you already use PageSpeed Service, you can find more details about enabling this rewriter here. This rewriter will also be available to App Engine users of PageSpeed Service in the near future.


Rahul Bansal and Kishore Simbili are Software Engineers on Google’s PageSpeed Team in Bangalore, India, which is dedicated to making the web faster.

Posted by Scott Knaster, Editor

2013, By: Seo Master

Seo Master present to you:
By Ram Ramani, Engineering Manager

Update 7/29/11: We were notified of a bug in the measurement tool that sometimes causes incorrect measurements. If your results indicated a slowdown on your pages, please run the tests again, and make sure you specify a fully qualified domain such as www.example.com. We apologize for any inconvenience and confusion this may have caused.

Details:
Measurement tests run for bare domains (such as example.com, without the prefix www) previously indicated that pages were loading more slowly, rather than speeding up, when using Page Speed Service. The test results page now prominently notifies you of this when you visit this page, if this error applies to you. Please check your old measurement results page if this bug applies to you. Running the tests again with the fully qualified domain such as www.example.com usually fixes the issue and gives you the correct measurement.

Two years ago we released the Page Speed browser extension and earlier this year the Page Speed Online API to provide developers with specific suggestions to make their web pages faster. Last year we released mod_pagespeed, an Apache module, to automatically rewrite web pages. To further simplify the life of webmasters and to avoid the hassles of installation, today we are releasing the latest addition to the Page Speed family: Page Speed Service.

Page Speed Service is an online service that automatically speeds up loading of your web pages. To use the service, you need to sign up and point your site’s DNS entry to Google. Page Speed Service fetches content from your servers, rewrites your pages by applying web performance best practices, and serves them to end users via Google's servers across the globe. Your users will continue to access your site just as they did before, only with faster load times. Now you don’t have to worry about concatenating CSS, compressing images, caching, gzipping resources or other web performance best practices.

In our testing we have seen speed improvements of 25% to 60% on several sites. But we know you care most about the numbers for your site, so check out how much Page Speed Service can speed up your site. If you’re encouraged by the results, please sign up. If not, be sure to check back later. We are diligently working on adding more improvements to the service.

At this time, Page Speed Service is being offered to a limited set of webmasters free of charge. Pricing will be competitive and details will be made available later. You can request access to the service by filling out this web form.

Ram Ramani is an Engineering Manager on the Make the Web Faster Team in Bangalore, India. He is a believer in "Faster is better".

Posted by Scott Knaster, Editor

2013, By: Seo Master

Seo Master present to you:

Hayes

Josh

by Joshua Marantz, Google PageSpeed Team, and Hayes Kim, EdgeCast Networks

At Google we want the whole web to be faster. We've built a fast browser, improved image encodings, developed better network protocols, and provided PageSpeed tools and optimization libraries. In November 2010, we launched mod_pagespeed, an open-source Apache module that speeds up web sites by rewriting HTML, JavaScript, CSS and images to reduce size, eliminate HTTP requests, and improve browser performance.

mod_pagespeed adoption is growing rapidly. Now EdgeCast Networks, one of the world’s largest CDN operators, has integrated mod_pagespeed into the core of its content delivery network and is making it available as an option in its Application Delivery Network (ADN) service offering.

Hayes Kim, EdgeCast Senior Product Manager, had this to say: "Edgecast has integrated mod_pagespeed alongside our HTTP engine and deployed this to our ADN edge locations worldwide. Our solution enables optimizations in real-time and local to the end user, leveraging the full compute capacity of our edge nodes. We leverage the local edge caches for the unoptimized resources and then cache the subsequent optimized resources processed by mod_pagespeed. EdgeCast's integration can speed up millions of websites either served directly by EdgeCast or indirectly through hosting providers using our technology."

Hayes says that early results show up to a 77% pageview performance improvement when leveraging the ADN service with mod_pagespeed, and a 33% performance improvement from mod_pagespeed alone.

Gogotech, an e-commerce solution provider, has been evaluating EdgeCast's ADN and edge optimizer services, with promising results so far. "This solution looks to be a strong contender for further improving our offerings to Gogotech clients, and we are looking forward to seeing it develop," said Alex Bolduc, IT Director at Gogotech.

The following images and this video show how mod_pagespeed and EdgeCast's ADN are speeding up a Gogotech site.



You can find more details about EdgeCast's mod_pagespeed integrated offerings here. And you can find information on Google’s PageSpeed technologies and tools here.


Joshua Marantz is a Software Engineer on Google’s Pagespeed Automatic team in Cambridge, MA, which is dedicated to making the web faster for everyone. Josh has been working on making software run fast for several decades, at Google and before that on accelerated chip simulation.

Hayes Kim has over eleven years of product development and leadership experience in online advertising, e-commerce, web acceleration, and social media. At EdgeCast, Hayes manages the development of the core HTTP technology that powers the CDN and Application Delivery Network.

Posted by Scott Knaster, Editor

2013, By: Seo Master