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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3
votes
3answers
83 views

Does background video affect SEO?

Does the extra loading time that a background video has, affect SEO? Or that does not really affect it because the HTML already loaded and the video is just streaming after? Does it make a difference ...
2
votes
1answer
11 views

any way I can fix this cphulk situation?

I should probably sue the cpanel guys right about now. The point is, I'm receiving all these strange messages in my logs about cphulk (brute force detection system) not being able to do its job of ...
1
vote
1answer
25 views

Forcing website icon to load early in all web browsers

My goal is to allow a small keepalive timeout (of about 3 seconds) with a max of about 5 requests, just enough for the page HTML, page assets, and the page icon. So far, every browser loads nearly all ...
1
vote
1answer
40 views

From which file size is it worth to implement images as Data URI?

As the title says: for site speed up sake it is good to implement small images like Data URIs directly into HTML source code, like inline CSS (background image url), or with usual img src. But from ...
0
votes
0answers
6 views

change cpanel log file location

Is there a way in some configuration file to specify a new folder to put all the cpanel log files in, or is there a way to specify new log file names for each log? I ask this because I want to store ...
4
votes
2answers
46 views

Will using Google's PageSpeed module help to speed up a site with Magento?

I'm considering installing Google's PageSpeed module on a Debian Linux / Apache 2.4 web server to speed up a Magento CE website. Will using Google's PageSpeed module help to speed up a website using ...
1
vote
1answer
19 views

AMP version of entire website

I read about Google's AMP(Accelerated Mobile Pages) and I think it is a nice initiative. But I can't really determine the use of AMP for our website, since to me it seems more for article and product ...
0
votes
0answers
15 views

How to prime cache on all location of a cdn

I have just started using MaxCDN to serve static resources faster (images, js and css mostly). It works great, as long as the data is cached on the cdn's location that is close to where I live. But ...
1
vote
1answer
22 views

Which does google prefer: chained redirects or longer time-to-first-byte?

I'm clearly a webpagetest.org addict now. Once again, I tested my site after optimizing (by eliminating some file scans) and the speed greatly improved. It's now at about 150ms Time to First Byte from ...
2
votes
1answer
29 views

Speed of prefork+ruid2 with more connections on limited memory

Currently I am using Apache in a server with WHM/Cpanel and I'm currently using Prefork MPM with Mod Ruid2 to process PHP pages. While the setup allows it to run very fast, I'm limited to processing ...
0
votes
1answer
7 views

What client on webpagetest.org is equivalent to googlebot client?

I made various speed tests to my website via webpagetest.org and I used a mobile network in California (which I believe is the closest one to google) to measure the speed of my site. It reports the ...
0
votes
0answers
9 views

Can a later DocumentRoot directive override an earlier DocumentRoot directive?

Because I use cPanel, the WHM developers are trying to restrict my subdomain creation to any folder within my user account of /home/username. In order to improve processing speed, I created a ram ...
0
votes
1answer
18 views

Can rewriterules work without carets or dollar signs?

Currently when I remap my friendly to non-friendly URLs on my website, I normally use lines like these in my .htaccess: RewriteEngine On RewriteCond %{ENV:REDIRECT_STATUS} !^$ RewriteRule .* - [L] ...
2
votes
1answer
35 views

Data center locations for hosting an international website

My web site is currently hosted in the US in NYC and SFO data center locations. I'm not too familiar with DNS, but both IP's point to my domain and the visitor's computer probably would pick the DNS ...
2
votes
2answers
27 views

What consumes less resources on the client side, an animation with gif or CSS?

What is better for the client side, an animated gif or the same animation done as a sequence of images with CSS ?
1
vote
1answer
18 views

Javascript page load time calculation returns negative

<script type="text/javascript">//<![CDATA[ // jQuery has already been loaded but this could be equivalent to // a function in <body onLoad=""> $(function(){ var ...
2
votes
4answers
921 views

Google bots are severely affecting site performance

I have an aggregate site on a linux server that pulls in feeds from a universe of about 2,000 blogs. It's in Wordpress 3.4.2 and I have a cron job that is staggered to run five times an hour on ...
1
vote
1answer
20 views

Streaming Vs Downloading Site Load Speed debate

We have a number of sites that use bg video - currently the video file (1.4mb) is loaded from the server and increases page load. My question is whether streaming the video on loop via Vimeo or ...
2
votes
2answers
63 views

How to analyse website performance

I've tried searching a lot and basically here is the problem. I have a website but I'm unable to pin point the reasons of why the performance of the website is so slow. We have shifted to a high end ...
60
votes
10answers
31k views

How can I simulate a slow connection for page load?

I have a fast server, and a reasonably fast home Internet connection. How can I simulate my page loading on a slow connection?
1
vote
1answer
52 views

Many requests in my logs to the same obscure page from Opera Mini. What can be the explanation?

I checked my site's logs and I found 20 thousand requests on the same day all to an obscure page of my site. The IP address of the requests belong to Opera Mini. Can someone explain this? I would be ...
2
votes
3answers
227 views

When do browsers clear cache and how can I make more use of 304 responses?

I have a website with some some content which changes frequently. I would like to benefit from good caching when this doesn't change (so would ideally use a longer Cache-Control header), but would ...
2
votes
1answer
65 views

Tradeoffs around using a query string vs embedding version number in the CSS/JS files [duplicate]

I was reading articles and forum posts about using version numbers in CSS/JS files. http://www.stevesouders.com/blog/2008/08/23/revving-filenames-dont-use-querystring/ ...
0
votes
0answers
10 views

Why are there 2 calls to the root of my site in firebug's Net panel

I am trying to diagnose performance problems on a website. The Net panel in Firebug is showing 2 calls to the site root that take place early in the process. Each call takes about 1.5 seconds of ...
2
votes
1answer
4k views

requests with http://. should I block?

I took a look at my logs and found out that earlier this year, random computers made a request to resources and my log recorded it as follows: "GET http://testp3.pospr.waw.pl/testproxy.php HTTP/1.1" ...
2
votes
1answer
61 views

Duplication of menu through javascript or PHP: Which is better for SEO and page performance?

I have a site with a typical desktop dropdown menu. For the mobile menu (and on touch devices), I am using javascript to slide it out onto the page from the right side by touching a menu button. The ...
6
votes
4answers
6k views

Specifying image dimensions to improve browser performance

I recently ran an audit on my web site using Google Developer Tools. My images are all the same size (500 horizontal by 300 vertical pixels) so I thought it would be better if I left out the image ...
1
vote
0answers
29 views

How to know if visitors are experiencing a good performance from the server? [duplicate]

Sometimes I visit my wordpress website on godaddy, and looks like the site is slow. But when I refresh it goes fast. I wonder how often this occur to my visitors on the month. Is there a way to know? ...
1
vote
3answers
94 views

How to test the speed of my server inet connection?

The connection speed our webapp is showing (from my office) is much slower than my connection speed to a SpeedTest.net site in the same city. I can test my internet using SpeedTest.net to Houston ...
21
votes
4answers
2k views

Why is loading speed of a website important for SEO?

I see everywhere on the internet how to optimize loading speed of a website but no one says why it's important for SEO. Inevitably, there are reasons why Google has decided to take this factor into ...
0
votes
2answers
35 views

How do i increase speed of my site by reduce time to fetch dns of my website? [closed]

My website "happyclothing.in" took 5 seconds to load. where it took 2 seconds to fetch the dns . How do i reduce it to 0 second.
1
vote
0answers
34 views

Performance: 4096 Bit RSA-Key compared to 2048 bit RSA-Key

Is there a comparison between 4096 Bit RSA-Key and a 2048 Bit RSA-Key? Id like to know what impact on performance it has, if Im choosing a 4096-Bit key for ssl-encryption. Is there any info which ...
4
votes
2answers
358 views

jQuery/AJAX on old Computers/Browsers

I am working on a plattform that will have a lot of users in the so called "developing countries". So many of them will be using old computers and old browsers in tiny internet cafes. We want to make ...
2
votes
2answers
56 views

Caching a changing site

I run a website where the static content changes at least 4 times a week and I'm trying to figure out the best header arrangement to use. Currently I have all caching related headers in use. I have ...
0
votes
0answers
70 views

Does image dimensions outside image tag also slow page loading?

I am using height and width for images in css before img tag (css in same page header) so I think there is no need to set dimensions in img tag. But when I checked speed in different online tools, ...
1
vote
3answers
65 views

Best practice how to specifiy the link's destination

In my website, I have many files such contact.php, about.html etc. Right now I can call those file in my site by two methods. Method 1: <a ...
1
vote
1answer
253 views

How to manage the leverage browser caching for third party JS files? [duplicate]

Is it possible to set and expiration date for the file http://assets.pinterest.com/js/pinit_main.js? And the other stuff down the list? I want to bring up my score as high as possible. I'm using ...
1
vote
3answers
879 views

Confused about missing width and/or height attributes

So I tested my site on https://gtmetrix.com and it said: The following image(s) are missing width and/or height attributes. I'm confused by this, because the images itself already have the correct ...
0
votes
1answer
78 views

Reducing waiting delay to webpage rendering time?

I ran a few tests on my website at webpagetest.org and while the Time to First Byte is under 200ms, it seems that in all tests I have run in different browsers at different locations, the page is ...
1
vote
1answer
31 views

Full Boostrap from CDN vs custom version from own server

The last few versions of Twitter Bootstap can be customized to include only the components you need. The full version, with all the components, can be served from a wide variety of public CDNs ...
0
votes
1answer
32 views

Looking for a reliable consistent site testing tool

I've been using GTMetrix for a while now but have noticed that the results are very inconsistent - and sometimes just wrong. Gidnetwork will show compression working perfectly and GTM continues to ...
1
vote
0answers
55 views

CSS Above or Below Body for Speed? [closed]

I just have a genuine question, should I put any CSS above or below the body tag (maybe for Javascript too?), and what are the pro's and con's of each method? and what's the (dis)advantages of using a ...
1
vote
5answers
428 views

How to make US websites faster in China?

We've been troubleshooting our site's performance in China. We've removed a lot of the scripts that were slowing pages down. Two critical things we can't simply remove are Google Analytics and Google ...
0
votes
2answers
2k views

Can I defer loading Modernizr?

I'm using an HTML5 template that makes thorough use of the semantic tags and includes Modernizr up top to do the necessary IE coaxing. Google PageSpeed is complaining about the blocking JavaScript and ...
3
votes
2answers
285 views

What's the minimum age for a Cache-Control header with Akamai?

We're planning an integration with a CDN (likely Akamai) and are trying to determine how low we could go for a max-age value. For a site that could get a few hundred thousand folks hitting the site ...
38
votes
6answers
5k views

When webservers send a page, why don't they send all required CSS, JS, and images without being asked?

When a web page contains a single CSS file and an image, why do browsers and servers waste time with this traditional time-consuming route: browser sends an initial GET request for the webpage and ...
1
vote
1answer
163 views

Does the load time of an XML sitemap matter?

I have a dynamic sitemap that will change on a daily basis. Because I'm hosting on Heroku, I'm having some difficulty getting it to persist. I'm considering having the sitemap generate on request, ...
0
votes
1answer
43 views

Google Webmaster Tools is reporting that some URLs listed my sitemap have a high response time [duplicate]

In Google Webmaster Tools looking at a new clients site, I'm seeing sitemap errors that I haven't seen before with this message: Some URLs listed in this Sitemap have a high response time. This ...
2
votes
2answers
363 views

How to improve load time when Pingdom says 80% of the load time is the web browser waiting for data from the server? [closed]

tools.pingdom.com gives a speed analysis of any given website. What does it mean when most of the load time is spent on waiting? I am using a CDN.
2
votes
1answer
59 views

For SEO, can content containing keywords be written into the page using JavaScript and still rank well?

We have a list of product summaries that appear on several different product listing sections of our website. Currently, these products are rendered into the HTML, and end up in different caches ...