Tools & Wizards About Us

Report Summary

  • 19

    Performance

    Renders faster than
    36% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

castlighthealth.com

Castlight Health – Health Navigation PlatformCastlight Health - Health Navigation Platform

Page Load Speed

2.8 sec in total

First Response

129 ms

Resources Loaded

1.8 sec

Page Rendered

832 ms

About Website

Click here to check amazing Castlight Health content for United States. Otherwise, check out these important facts you probably never knew about castlighthealth.com

It's about time we simplify the complexities of health and care Cut through the noise and guide your members to better health and wellbeing with a proven,

Visit castlighthealth.com

Key Findings

We analyzed Castlighthealth.com page load time and found that the first response time was 129 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

castlighthealth.com performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.1 s

3/100

10%

LCP (Largest Contentful Paint)

Value11.0 s

0/100

25%

SI (Speed Index)

Value9.3 s

12/100

10%

TBT (Total Blocking Time)

Value2,240 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.025

100/100

15%

TTI (Time to Interactive)

Value16.0 s

6/100

10%

Network Requests Diagram

castlighthealth.com

129 ms

www.castlighthealth.com

177 ms

autoptimize_721911aa0b93297c2061b363361232c3.css

57 ms

otSDKStub.js

43 ms

dashicons.min.css

33 ms

Our browser made a total of 82 requests to load all elements on the main page. We found that 60% of them (49 requests) were addressed to the original Castlighthealth.com, 11% (9 requests) were made to Cdn.cookielaw.org and 5% (4 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (496 ms) relates to the external source Analytics.twitter.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 171.3 kB (10%)

Content Size

1.7 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Castlighthealth.com main page is 1.7 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. 70% of websites need less resources to load. Images take 829.3 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 163.5 kB

  • Original 196.8 kB
  • After minification 195.7 kB
  • After compression 33.3 kB

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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 163.5 kB or 83% of the original size.

Image Optimization

-0%

Potential reduce by 953 B

  • Original 829.3 kB
  • After minification 828.4 kB

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. Castlight Health images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 6.9 kB

  • Original 465.1 kB
  • After minification 465.1 kB
  • After compression 458.3 kB

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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 50 B

  • Original 210.2 kB
  • After minification 210.2 kB
  • After compression 210.1 kB

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. Castlighthealth.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 22 (29%)

Requests Now

75

After Optimization

53

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 75 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Castlight Health. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

castlighthealth.com accessibility score

84

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Image elements do not have [alt] attributes

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

castlighthealth.com best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

castlighthealth.com SEO score

79

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Castlighthealth.com 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 Castlighthealth.com 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.

Social Sharing Optimization

Open Graph data is detected on the main page of Castlight Health. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: