Analyze

sfpl.org: San Francisco Public Library | Home | San Francisco Public Library

The website of the San Francisco Public Library.

Page load speed analysis

  • 74/100

    Good result
  • 7

    Successful tests
  • 1

    Failed test
  • First response

    405 ms

  • Resources loaded

    1.4 sec

  • Page rendered

    131 ms

  • Total page load time

    2 sec

Welcome to sfpl.org homepage info - get ready to check Sfpl best content for United States right away, or after learning these important things about sfpl.org

We analyzed Sfpl.org page load time and found that the first response time was 405 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Page optimization

  • HTML 19.3 kB
    Images 352.2 kB
    Javascripts 224.8 kB
    CSS 82.0 kB

    In fact, the total size of Sfpl.org main page is 678.3 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 15% of websites need less resources to load. Images take 352.2 kB which makes up the majority of the site volume.

    • Original 19.3 kB
    • After minification 16.2 kB
    • After compression 4.4 kB

    HTML optimization

    HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 3.0 kB, which is 16% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 14.8 kB or 77% of the original size.

    • Original 352.2 kB
    • After optimization 211.3 kB

    Image optimization

    Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Sfpl needs image optimization as it can save up to 140.9 kB or 40% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

    • Original 224.8 kB
    • After minification 203.3 kB
    • After compression 72.6 kB

    JavaScript optimization

    It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 152.3 kB or 68% of the original size.

    • Original 82.0 kB
    • After minification 69.9 kB
    • After compression 15.2 kB

    CSS optimization

    CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Sfpl.org needs all CSS files to be minified and compressed as it can save up to 66.9 kB or 82% of the original size.

Network requests diagram

  • sfpl.org
  • basic.css
  • basic.css.php
  • mediumtext.css
  • home.css
  • require.js
  • map.js
  • home.js
  • analytics.js
  • page_white.gif
  • background_header.jpg
  • facebook_icon.gif
  • twitter.png
  • pinterest.15x15.png
  • instagram.15x15.png
  • 2003.jpg
  • bullet.gif
  • black-history.jpg
  • ereader.jpg
  • exhibits.jpg
  • friends.jpg
  • sfpl_historical_photo.jpg
  • search.png
  • city_seal.gif
  • survey.png
  • dialog.png
  • jquery-1.10.2.min.js
  • urlParams.js
  • sdk.js
  • collect
  • jquery.placeholder.min.js
  • print.css

Our browser made a total of 32 requests to load all elements on the main page. We found that 91% of them (29 requests) were addressed to the original Sfpl.org, 6% (2 requests) were made to Google-analytics.com and 3% (1 request) were made to Sfpl.bibliocommons.com. The less responsive or slowest element that took the longest time to load (460 ms) belongs to the original domain Sfpl.org.

Additional info on sfpl.org

Requests

The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sfpl. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

8

Javascripts

18

Images

5

CSS

31

All

Possible request optimization

1

Javascripts

12

Images

1

CSS

17

Optimized

14

All

Normal result

IP address

Sfpl.org uses IP address which is currently shared with 4 other domains. The more sites share the same IP address, the higher the host server’s workload is. It is strongly recommended that the host server should be changed or the hosting provider should be requested to give a different (separate) IP address for this domain.

Poor result

IP Trace

DNS records

Type Host Target/ip TTL Other
A

sfpl.org

23.185.0.3 7200
NS

sfpl.org

ns2.pbi.net 7200
NS

sfpl.org

ns1.pbi.net 7200
SOA

sfpl.org

7200 Mname: ns1.pbi.net
Rname: rm-hostmaster.ems.att.com
Serial: 2008012362
Refresh: 3600
Retry: 900
Expire: 604800
Minimum-ttl: 7200
MX

sfpl.org

sfpl-org.mail.protection.outlook.com 3600 Pri: 10

Language and encoding

Good result

Language

EN en language flag

Detected

EN en language flag

Claimed

Encoding

UTF-8

Claimed

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sfpl.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Sfpl.org main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

HTTPS certificate

SSL Certificate

Sfpl.org has no SSL certificate. Web browsing can be safer with HTTPS connection, so we suggest that it should be obtained for this site.

Normal result

Visitor World Map

Country of origin for 97.6% of all visits is United States. It’s good for Sfpl.org that their server is also located in United States, as that enables the majority of their visitors to benefit from a much faster page load time.

Good result

Normal result

Social Sharing Optimization

Open Graph data is detected on the main page of PARSED_DOMAIN, but there is no image specified in description. It would be a good idea for the website admin to select a nice image that can properly represent the website in Open Graph data, otherwise the first found image will be taken for this purpose and social media information block will look like this:

sfpl.org

Share this report in social media

Analyze another website

Analyze