Analyze Oyster online - Transport for London - Oyster cards

Official online shop for Oyster card. Order your Oyster card travelcard, check Oyster card prices or top up Oyster Pre Pay.

Page load speed analysis

  • 49/100

    Normal result
  • 4

    Successful tests
  • 4

    Failed tests
  • First response

    361 ms

  • Resources loaded

    5.2 sec

  • Page rendered

    145 ms

  • Total page load time

    5.7 sec

Welcome to homepage info - get ready to check Oyster Tfl best content for United Kingdom right away, or after learning these important things about

We analyzed page load time and found that the first response time was 361 ms and then it took 5.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Page optimization

  • HTML 35.4 kB
    Images 192.3 kB
    Javascripts 908.6 kB
    CSS 336.5 kB

    In fact, the total size of main page is 1.5 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 20% of websites need less resources to load. Javascripts take 908.6 kB which makes up the majority of the site volume.

    • Original 35.4 kB
    • After minification 30.2 kB
    • After compression 7.7 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 5.3 kB, which is 15% 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 27.7 kB or 78% of the original size.

    • Original 192.3 kB
    • After optimization 140.1 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, Oyster Tfl needs image optimization as it can save up to 52.2 kB or 27% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

    • Original 908.6 kB
    • After minification 878.2 kB
    • After compression 267.3 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 641.3 kB or 71% of the original size.

    • Original 336.5 kB
    • After minification 301.1 kB
    • After compression 50.2 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. needs all CSS files to be minified and compressed as it can save up to 286.3 kB or 85% of the original size.

Network requests diagram

  • tflGlobal.css
  • oyster.css
  • toploading.js
  • jquery.min.js
  • all.js
  • s_code_prod.js
  • MoL.png
  • blank.gif
  • tflGlobal-application.svg
  • organDonor.png
  • oysterCard.png
  • createAccount.png
  • GLA_Logo.png
  • NJFont-Book.woff
  • tfl-global-application.woff
  • NJFont-BookBold.woff
  • keepalive
  • tag.js
  • njfontsigning-medium.woff
  • .jsonp
  • s79178366416599
  • MoL.png
  • storage.min.html
  • 62803534
  • zones
  • Login
  • 62803534
  • csc-styles-small.css
  • basic-header-footer-small.css;wab0e9c25250151910
  • jquery-ui.css;wa821a6b4bb74947d3
  • jquery-1.9.1.min.js
  • jquery-ui-1.10.0.min.js
  • jquery.validate.min.js;wa98cc74ca5526f3b6
  • jquery.placeholder.min.js;wac7418b6c21d4d178
  • sso.common.js;wa6f72d6bee75808fa
  • site.css;wa389a8a63beb935fc
  • csc.js;wadb8fa7edf6c8430e
  • stats-settings.js;wa2211fd0d005dfcf3
  • stats.min.js
  • vsprite_x2.png
  • NJFont-BookBold.woff
  • s75180451436899
  • njfontsigning-medium.woff
  • .jsonp
  • storage.min.html
  • 62803534
  • 62803534
  • csc-styles-medium.css;wa3987f486bbeea65a
  • site-medium.css
  • csc-styles-large.css;wa4bd6a93db5f1bef0
  • site-large.css
  • basic-header-footer-medium.css

Our browser made a total of 54 requests to load all elements on the main page. We found that 30% of them (16 requests) were addressed to the original, 41% (22 requests) were made to and 7% (4 requests) were made to The less responsive or slowest element that took the longest time to load (1.6 sec) relates to the external source

Additional info on


The browser has sent 49 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Oyster Tfl. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.











Possible request optimization













Normal result


As for redirects, our browser was forwarded to before it reached this domain.

IP address 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 300
A 300

300 Txt: v=spf1 ip4: ip4: ip4: ip4: -all

Language and encoding

Normal result


N/A  language flag


EN en language flag





Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is English. Our system also found out that 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 has no SSL certificate. Web browsing can be safer with HTTPS connection, so we suggest that it should be obtained for this site.

Poor result

Visitor World Map

Country of origin for 73.9% of all visits is United Kingdom. It lies approximately 4380 miles away from the server location (United States) and such a long distance can negatively affect website speed, as it takes some time for data to travel back and forth between those places. That’s why one of the best ways to speed up page load time for the majority of users is moving the server to United Kingdom or just closer to the user base.

Poor result

Poor result

Social Sharing Optimization

Open Graph description is not detected on the main page of Oyster Tfl. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks:

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