The art of tuning a website to deliver it's content quickly and efficiently to the user over a potentially low bandwidth connection.

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23
votes
1answer
3k views

How exactly is Google Webmaster Tools measuring “Site Performance”?

I've been working for two months now on improving our response time (mainly server side) on a new forum (a brand new product on a technical point of view) we've launched in Germany a few month ago and ...
4
votes
2answers
2k views

How does server connection speed affect website performance?

A web host I'm considering quotes their server connection speed for their basic package as '15Mb/s burstable.' They offer an upgrade to a more expensive package with a '35Mb/s burstable' speed. I ...
3
votes
2answers
6k views

Slow website response? How can I fix this issue?

I have pingdom monitor on my website: http://stats.pingdom.com/t68xhgex256f/375513 For North America (big target market) the response time is 1-2 seconds. This is far too slow. Is there anything ...
5
votes
2answers
2k views

Cache external static scripts?

In my never ending quest for a faster website, I thought perhaps I could cache some scripts. I'm using Yslow to rate my site, everything is pretty much A (which is great, our website on Pingdom loads ...
9
votes
1answer
683 views

Is there a maximum size that web pages should be kept under?

Posted this on SO before Ben Voigt was nice enough to direct me here. Anywho, here is my question: When I say size I'm talking about bytes not pixels. I'm curious if there is any consensus on what ...
5
votes
2answers
731 views

How is this site so fast?

how is the website http://dftba.com/ so fast? when i click a link it loads right then? what makes it work like this? how do i make it work like this on my site? some of the objects on the site are ...
3
votes
3answers
132 views

Google webmaster tools Site Performance says site is faster but shows it slow in the graph

Looking into Google webmaster tools it happened to me many times to see for some of my sites these type of inconsistency, in the text they say my site is faster than 63% of sites, but when I look at ...
1
vote
1answer
97 views

testing random pages for uptime (part of an SLA)

We have outsourced hosting of a large website. We have an SLA for response times of random pages. I.e. every minute a random page will be chosen from a pool of 30,000 pages and its response time ...
13
votes
2answers
1k views

Ideas to improve website loading speed?

Are there any ways in which I can improve the loading speed of a website? I know that Google is really pushing loading speeds and with the popularity of mobile websites it's now imperative that sites ...
3
votes
2answers
634 views

One JS/CSS bundle Vs. One with default and one with custom

On a few of my sites, we use Javascript/CSS bundles to reduce load time. I've always used two bundles for each type (4 in total) so I have JS Bundle 1: Contains scripts that are standard on every ...
5
votes
2answers
171 views

Do heavy graphics and/or a high load time affect a site's search rankings?

Does the use of heavy graphics/images (with img tag or in the CSS) effect a site's Google ranking? Sometimes sites are heavy because of the images used or Flash or lots of JavaScript - making the ...
4
votes
2answers
468 views

Actual page load time vs. perceived one

You know how all around the web, people are pushing for smaller and smaller page load times ? They do so with good reason, especially with Google now factoring it in in their way to rank pages. It's ...
1
vote
3answers
97 views

If my web application is under a server will it perform better than if it is under a shared hosting?

Assuming that I have build an application using PHP, let's say something like vBulletin or assume that I will install the vBulletin itself. Will it performs better if it is in a VPS rather than a ...
3
votes
2answers
162 views

What is the easiest and fastest way to get statistics of a webservice response time?

I implemented a webservice with node.js and want to test its response time. I don't just want to do the test with one connection attempt, but I want statistics about multiple attempts, telling me the ...
3
votes
1answer
58 views

Statistics about development of average connection speed and latency over the years

Are there any statistics about the development of average internet connection speed and request latency from households to major sites over the years? I find this information very useful for ajax ...
4
votes
1answer
484 views

How to show content for logged-in vs logged-out users?

We have a set of pages with the following urls: www.mysite.com/info/page1.html www.mysite.com/info/page2.html www.mysite.com/info/page3.html Each has a structure as follows: ---------------------- ...
2
votes
3answers
352 views

Website has “lagging” effect. Causes? Tips and tricks to fix?

So I have this site here which has major performance issues. Scrolling is very slow, hover effects have a bit of lag and other similar issue. Unfortunately right now I am working off a cheap host so I ...
3
votes
4answers
264 views

WordPress MySQL Performance

I have a website (www.americanbankingnews.com) that gets 40,000-50,000 page views today. It's currently sitting on a dedicated quad-core Xeon server with 8GB of ram. The site is powered by WordPress ...
0
votes
3answers
110 views

Load times and SEO for 1 page sites

I find that 1 page sites can be interactive animating from page to page. But if a site starts to get a little larger or contains many images, perhaps an image gallery, it loads slowly. Also its not ...
2
votes
0answers
84 views

How to make sure that my web application would be stable? [duplicate]

Possible Duplicate: How do you load test your application? Hi, I have finished 95% of my web application. Now, I would like to make sure that the website is stable even with 5000 or more ...
7
votes
1answer
480 views

How is Apple's enormously image-heavy site served so fast?

Took a profile of the "Smart Cover" page on Apple's site using Pingdom. It's requesting 241 objects for a total page weight of 3472.6 KB! An absolute mammoth. How does this possibly translate into ...
1
vote
1answer
206 views

Critique of SEO of this HTML [closed]

I'm designing a new site which I want to be as SEO friendly as possible, fast and responsive, semantic and very accessible. A lot of these things, embarrassingly are quite new to me. Have I miss ...
3
votes
0answers
225 views

How to test high load on a website? [duplicate]

Possible Duplicate: How do you load test your application? Hi, I am nearing a point of finalizing a website and it will soon be released. We have bought some traffic and advertisement ...
0
votes
3answers
213 views

Raw coding vs Joomla / Drupal

Currently my sites pages load in about 500ms. The HTML, CSS, JavaScript, PHP, Python, Perl, and SQL queries are totally not optimised. If I recreate the site using Joomla, will my site slow down?
4
votes
5answers
4k views

GZipped Images - Is It Worth?

Most image formats are already compressed. But in fact, if I take an image and compress it [gzipping it], and then I compare the compressed one to the uncompressed one, there is a difference in size, ...
11
votes
3answers
26k views

What's the best FREE CDN service available? [closed]

It seems like using CDN is a best option to provide users a great browsing experience. But, plans of the major CDN providers seem costly. So, I would like to get used to the CDN thing before I ...
1
vote
2answers
92 views

Service and/or tool to monitor performance?

I am seeing wildly different performance from a clients web site, and would like to set up some sort of monitoring. What I'm looking for is a service that will issue requests to a couple of URLs, and ...
3
votes
2answers
459 views

KPI's for Webmasters

Do you know any Key Performance Indicators for Webmasters? What should be measured and monitored?
3
votes
1answer
662 views

SEO for images: can I use a different (cookieless) domain?

We want to increase the value of some of our important images by means of SEO, and we want to start serving them from a different, i.e. cookieless, domain. We want to go from ...
0
votes
4answers
1k views

Best way to have both HTTP and HTTPS communication in a web application?

I am considering using both HTTP and HTTPS in a web application and I am looking for tips to accomplish this best. The application will run under Tomcat. I have also seen the following about HTTPS ...
3
votes
3answers
1k views

Track page size of web app for performance

I'm about to start trialling optimisations on my web application (apache & tomcat). My main interest right now is: The total page size (including external js files such as jquery) The number of ...
1
vote
2answers
402 views

web page performance testing in Internet Explorer

How can I get the web page load speed and data amount in Internet Explorer? I know about PageSpeed and Firebug for Firefox, is there an equivalent of those tools for IE?
0
votes
1answer
61 views

Is there any overhead on making my webapp traverse more folders?

I understand there is a need of placing different categories of resources in separate folders for the sake of organization. But is there any noticeable decrease in page load speeds accompanied with it ...
3
votes
4answers
888 views

How to replay traffic to web server from logs to profile / benchmark web app under real load?

Is there a way to get recorder real network traffic to web server, e.g. from web server logs (Apache), and replay this traffic to either profile web application (in Perl) under real load, or benchmark ...
4
votes
5answers
461 views

Do user names used for login need to be unique?

Assuming a non-commercial site where users login with a user name and pw, do I need to enforce unicity of usernames? Note: The db will use a separate unique index to identify the users. The site is ...
25
votes
3answers
2k views

Should I use gzip for compressing my HTML?

I saw from an online tester that my HTML can be compressed about 90%! Is it good practice to use gzip or not? I see that lot sites don't use it. For me it would improve traffic, as some pages ...
6
votes
2answers
307 views

Web hosting providers and performance

Is there a way that we can measure performance for a host provider? If so, I would like to start this post as a wiki for everyone to chime in regarding their hosting provider. (I want to change but ...
5
votes
2answers
766 views

URL rewritten pages take much longer to load

(Same issue as http://stackoverflow.com/questions/3987754/how-to-diagnose-htaccess-speed-issues-via-rewritelog but more clearly explained below) We have a site which has scripts like this: ...
2
votes
5answers
589 views

Is there a good tool or service for tracking and analyzing website response/download time?

I am looking for a simple tool or service to track the server-side performance of a website over time. It would be nice to have the possibility to register a set of URLs for different page types and ...
3
votes
2answers
758 views

Is it good to refresh a page after a fixed interval?

I seen many sites which are refreshing their pages after a fixed interval. Sometimes it is 1-2 mins only. If i refresh a page after every 5 mins. It'll helpful to notify user with updated contents. ...
6
votes
2answers
549 views

Does specifying explicit image dimensions help site performance?

I ran some audits on a new web application we are about to launch. Chromium is suggesting in network utilization that a few images on our site do not have height/width dimensions explicitly declared. ...
7
votes
6answers
699 views

drupal site speed increase

I'm using a drupal site with a theme from rockettheme. The users are member users. The problem is for unknown reason the site is very slow. Takes around 20 seconds to open the page. I have tried ...
5
votes
4answers
14k views

What can you do to speed up IIS 7 web sites?

Turn on compression and you'll see immediate performance improvements, likewise if you enable caching for complex web apps. What other configuration options you can change to improve performance? do ...
7
votes
2answers
281 views

Is there any way to diagnose which PHP or Perl scripts consume the most CPU time on a production server?

On a slightly under-powered server, it occasionally gets hit by lots of robots crawling simultaneously. Whilst one solution is to look into throwing more processing power at the web server, it has ...
2
votes
1answer
129 views

What kind of ad format best for site header?

I have room in the header of my website for ads. I've tried 480x60 banner ads and text ads from several networks, relevant to the subject matter of the website and every type of ad has performed very ...
9
votes
1answer
229 views

Hosting speed tests?

Are there any sites to test the speed of your hosting? I know there are sites that will tell you why your site is slow, e.g. - YSlow, etc., but how about the speed of bandwidth you get from your ...
8
votes
6answers
5k views

Is it possible to use asynchronous google adsense, i.e. non-blocking?

I know that there is a Asynchronous method of using Google Analytics but is there something similar for adsense? I can't find one from my current searches - I was wondering whether there is a common ...
3
votes
1answer
238 views

Combining CSS files with regards to @media

We have a website where the usual speed ups from High Performance Websites and Even Faster Web Sites paid dividends. However we have neglected stylesheets (due to the difficulties laid out below) and ...
11
votes
5answers
274 views

Should JavaScript referenced in the head section be served from the same hostname as the main document?

I was under the impression that for the best performance, Javascript should be treated as static content and served from a cookieless domain along with CSS files, images, etc. But Google says here: ...
2
votes
4answers
968 views

Webpage Post Submits vs AJAX?

Which is better and why? I can see where a site that works 100% in AJAX might optimize a bit better, due to not having to reload the page on each click. But I am a huge fan of the big submit button ...