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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1
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1answer
32 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
0answers
22 views

Fastest .htaccess redirect from example.com to www.example.com?

Now using the standard cPanel-created Apache .htaccess redirect, but it's taking a full 2 seconds to go from ´example.com´ to ´www.example.com´. Is there a faster method? Or should I let go of the ...
1
vote
1answer
36 views

Is there a performance difference between background-size:cover and background-size:100% auto?

I know what the difference is between background-size: cover and background-size: 100% auto. I'm curious if there is a performance difference between the two and which one would be preferred?
10
votes
5answers
2k views

Blank image. What to use: Base64 vs 1x1 JPEG image

I am building a website and I want to make HTTP queries as few as possible for a better website speed and seo. The page I just created is showing images on scroll (images have an attribute data-scr ...
1
vote
1answer
38 views

What is an appropriate total page size for a homepage, including full-screen background images so that they load fast but don't look blurry?

I am in a dilemma. My customer wants to put several nice pictures as a background on Homepage, each of them being 1200 x 650 and sized about 1.5MB. I tried to compress them to a reasonable size at ...
0
votes
1answer
38 views

What CDN features are the most important when picking a CDN provider?

Price and a number of PoP's surely do matter. But if I was after choosing one CDN provider out of 10 similar ones, what CDN features would be the most important? Which ones do really matter for ...
1
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0answers
47 views

Can images be combined using the clip CSS Property while still maintaining image SEO and semantics?

I have two images in my web page. Actually there are 20 but I want to keep things simple: <div> <img src="apple.png" alt="Apple" /> <img src="orange.png" alt="Orange" /> ...
1
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1answer
21 views

Is a .htaccess rewrite rule a potential performance issue?

I use a .htaccess rewrite to redirect: RewriteEngine on RewriteBase / RewriteCond %{REQUEST_URI} !^/redirect-to-this-subfolder/ RewriteCond %{HTTP_HOST} ...
1
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0answers
22 views

Will deleting font files make my website run faster even if it causes multiple (and more) zero byte requests for the missing files?

I have a file that is part of my website template with a size of 55.8 kb. I want to lean down my website and make it run faster. I can prevent that file from loading by deleting it. When that ...
1
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1answer
16 views

Do any important SEO robots (such as search engine crawlers) rely on IP addresses anymore to identify websites?

Currently, I have it where anyone who attempts to access my server IP address as a website (example: http://nnn.nnn.nnn.nnn) will be redirected to a domain name with the original request URI appended. ...
1
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1answer
59 views

Why is this mobile/image Googlebot crawl rate so fast? (10-30 req per sec)

This morning in logs I noticed a user got rate limited by our throttler 3 times within 1 second (429 too many requests error) at 3:30:11 AM EST: Mozilla/5.0 (Linux; Android 6.0; GCE x86 phone ...
1
vote
1answer
30 views

Is webpagetest.org unreliable with mobile testing? I'm trying to get accurate results

I use webpagetest.org to test my website very often. When I used a couple of remote desktop computers on their site, my TTFB (time to first byte) measures between 1 and 400ms. However, on nearly all ...
1
vote
0answers
18 views

Using SetEnvIf to not log overly accessed URLs

I'm trying to figure out how to craft my SetEnvIf's in my apache config so that the server hard disk isn't spinning 24/7 over log entries. What I want to do is disable logging for all domains and ...
40
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 ...
63
votes
10answers
32k 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?
2
votes
1answer
56 views

Which version of my site is preferable for SEO

As you can see from the graphs below, the blue version shows content sooner, but the overall page load is slower. Thoughts?
4
votes
0answers
62 views

What might be causing my site's pages to load more slowly in these IIS Rewrite Module rules?

I have the following IIS rewrite rules that work exactly as I wish on both my development and live servers within an Orchard CMS website, though when enabled, seriously slow the site's page loads. ...
1
vote
0answers
21 views

Why is my httpd so busy? [closed]

I have a simple Wordpress site on a VPS that isn't performing well. AWStats says: ~ 500k page views per month: ~ 50-80k unique visitors per month ~ 500-800 GB bandwidth per month ...
1
vote
0answers
16 views

Page speed performing poorly specifically on OS X versions of Chrome. What gives?

I'm digging into page speed within my Google Analytics, and saw that I'm having higher than average load times with Chrome, which was unexpected. Digging in further by operating system, the issue ...
0
votes
2answers
41 views

How can I tell Chrome to use all 6 concurrent connections asap?

I would like to improve rendering performance of http://www.camping.info/campinplaetze. Running a test on WebPageTest.org I see in the waterfall chart that for images loaded from ...
3
votes
3answers
134 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
68 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
28 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 ...
2
votes
1answer
75 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 ...
1
vote
0answers
8 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
52 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
0answers
31 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
31 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 ...
0
votes
1answer
13 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 ...
1
vote
0answers
21 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
27 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
36 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
28 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
47 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
955 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
21 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
68 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 ...
1
vote
1answer
70 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
324 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
97 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 ...
3
votes
1answer
6k 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
79 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
7k 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
128 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
41 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
45 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
360 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 ...