Tools & Wizards About Us
cambridgehistory.org screenshot

Report Summary

  • 10

    Performance

    Renders faster than
    23% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 86% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

cambridgehistory.org

Cambridge History | Original Research | Articles | Exhibitions

Page Load Speed

4.7 sec in total

First Response

128 ms

Resources Loaded

4.1 sec

Page Rendered

462 ms

cambridgehistory.org screenshot

About Website

Click here to check amazing Cambridge History content for United States. Otherwise, check out these important facts you probably never knew about cambridgehistory.org

Original research by History Cambridge staff, interns, volunteers, and community members, articles, oral histories, and online exhibitions.

Visit cambridgehistory.org

Key Findings

We analyzed Cambridgehistory.org page load time and found that the first response time was 128 ms and then it took 4.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

cambridgehistory.org performance score

10

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

38/100

10%

LCP (Largest Contentful Paint)

Value9.2 s

1/100

25%

SI (Speed Index)

Value11.3 s

5/100

10%

TBT (Total Blocking Time)

Value2,240 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.439

21/100

15%

TTI (Time to Interactive)

Value15.6 s

6/100

10%

Network Requests Diagram

cambridgehistory.org

128 ms

historycambridge.org

3118 ms

style.min.css

14 ms

all.min.css

26 ms

jquery.bxslider.css

25 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Cambridgehistory.org, 82% (45 requests) were made to Historycambridge.org and 5% (3 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (3.1 sec) relates to the external source Historycambridge.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 419.1 kB (14%)

Content Size

3.0 MB

After Optimization

2.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cambridgehistory.org main page is 3.0 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 2.5 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 176.6 kB

  • Original 205.6 kB
  • After minification 203.0 kB
  • After compression 29.0 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 176.6 kB or 86% of the original size.

Image Optimization

-6%

Potential reduce by 137.1 kB

  • Original 2.5 MB
  • After minification 2.3 MB

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. Cambridge History images are well optimized though.

JavaScript Optimization

-9%

Potential reduce by 12.8 kB

  • Original 141.9 kB
  • After minification 141.9 kB
  • After compression 129.1 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

-47%

Potential reduce by 92.7 kB

  • Original 198.2 kB
  • After minification 198.0 kB
  • After compression 105.5 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. Cambridgehistory.org needs all CSS files to be minified and compressed as it can save up to 92.7 kB or 47% of the original size.

Requests Breakdown

Number of requests can be reduced by 36 (78%)

Requests Now

46

After Optimization

10

  • Images
  • JavaScript
  • CSS

The browser has sent 46 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cambridge History. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

cambridgehistory.org

cambridgehistory.org

128 ms

historycambridge.org

historycambridge.org

3118 ms

style.min.css

style.min.css

14 ms

all.min.css

all.min.css

26 ms

jquery.bxslider.css

jquery.bxslider.css

25 ms

dashicons.min.css

dashicons.min.css

46 ms

2-layout.css

2-layout.css

42 ms

style.css

style.css

47 ms

jquery.magnificpopup.min.css

jquery.magnificpopup.min.css

44 ms

b3e2b8155705dad2b0eb13e27bb46e8c-layout-bundle.css

b3e2b8155705dad2b0eb13e27bb46e8c-layout-bundle.css

48 ms

style.css

style.css

52 ms

pum-site-styles.css

pum-site-styles.css

59 ms

base.min.css

base.min.css

64 ms

skin-6695799da0de9.css

skin-6695799da0de9.css

60 ms

css

css

75 ms

jquery.min.js

jquery.min.js

60 ms

jquery-migrate.min.js

jquery-migrate.min.js

57 ms

js

js

431 ms

jquery.easing.min.js

jquery.easing.min.js

55 ms

jquery.fitvids.min.js

jquery.fitvids.min.js

65 ms

jquery.bxslider.min.js

jquery.bxslider.min.js

64 ms

jquery.waypoints.min.js

jquery.waypoints.min.js

60 ms

2-layout.js

2-layout.js

64 ms

ctct-plugin-recaptcha-v2.min.js

ctct-plugin-recaptcha-v2.min.js

64 ms

api.js

api.js

81 ms

ctct-plugin-frontend.min.js

ctct-plugin-frontend.min.js

64 ms

jquery.imagesloaded.min.js

jquery.imagesloaded.min.js

62 ms

jquery.ba-throttle-debounce.min.js

jquery.ba-throttle-debounce.min.js

67 ms

jquery.magnificpopup.min.js

jquery.magnificpopup.min.js

64 ms

masonry.min.js

masonry.min.js

67 ms

jquery.masonry.min.js

jquery.masonry.min.js

67 ms

jquery.infinitescroll.min.js

jquery.infinitescroll.min.js

67 ms

82b85d6fe0c1d54e7ba26f3711f25ae4-layout-bundle.js

82b85d6fe0c1d54e7ba26f3711f25ae4-layout-bundle.js

67 ms

script.min.js

script.min.js

70 ms

core.min.js

core.min.js

71 ms

pum-site-scripts.js

pum-site-scripts.js

68 ms

theme.min.js

theme.min.js

70 ms

script.js

script.js

70 ms

css

css

32 ms

HC-Array-and-Logotype-Low-Res.png

HC-Array-and-Logotype-Low-Res.png

308 ms

Open-Archives-Roadtrip-2024-1024x512.jpg

Open-Archives-Roadtrip-2024-1024x512.jpg

246 ms

Where-should-we-go-next-1.png

Where-should-we-go-next-1.png

247 ms

Pauline-Hopkins-event-Oct-17-1-1024x576.png

Pauline-Hopkins-event-Oct-17-1-1024x576.png

249 ms

Party-at-Pemberton-design-1-1024x576.png

Party-at-Pemberton-design-1-1024x576.png

246 ms

HLN-House-and-bottle-trees-May-2022.jpg

HLN-House-and-bottle-trees-May-2022.jpg

312 ms

HC-Icon-White-Screen-768x768.png

HC-Icon-White-Screen-768x768.png

246 ms

va9b4kzIxd1KFppkaRKvDRPJVDf_vB_ekGrV.woff

va9b4kzIxd1KFppkaRKvDRPJVDf_vB_ekGrV.woff

307 ms

va9b4kzIxd1KFppkaRKvDRPJVDf_4h_ekGrV.woff

va9b4kzIxd1KFppkaRKvDRPJVDf_4h_ekGrV.woff

309 ms

va9b4kzIxd1KFppkaRKvDRPJVDf_WxjekGrV.woff

va9b4kzIxd1KFppkaRKvDRPJVDf_WxjekGrV.woff

309 ms

bx_loader.gif

bx_loader.gif

63 ms

fa-brands-400.woff

fa-brands-400.woff

32 ms

wARDj0u

wARDj0u

29 ms

fa-regular-400.woff

fa-regular-400.woff

29 ms

fa-solid-900.woff

fa-solid-900.woff

30 ms

aebab155-c94f-432e-9d59-06b9308bf6b0

aebab155-c94f-432e-9d59-06b9308bf6b0

196 ms

Accessibility Review

cambridgehistory.org accessibility score

95

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

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

Links do not have a discernible name

Best Practices

cambridgehistory.org best practices score

92

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

Missing source maps for large first-party JavaScript

SEO Factors

cambridgehistory.org SEO score

86

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

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 Cambridgehistory.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 Cambridgehistory.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.

Social Sharing Optimization

cambridgehistory.org

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