Tools & Wizards About Us
caribmap.org screenshot

Report Summary

  • 52

    Performance

    Renders faster than
    70% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

caribmap.org

Caribmap - A cartographic history of Caribbean islands

Page Load Speed

539 ms in total

First Response

26 ms

Resources Loaded

404 ms

Page Rendered

109 ms

caribmap.org screenshot

About Website

Visit caribmap.org now to see the best up-to-date Caribmap content and also check out these interesting facts you probably never knew about caribmap.org

Caribmap is a resource for exploring historical map images of Caribbean islands. The site has evolved since 1999 and now presents images of ~1800 maps of the islands printed over five centuries (16th–...

Visit caribmap.org

Key Findings

We analyzed Caribmap.org page load time and found that the first response time was 26 ms and then it took 513 ms to load all DOM resources and completely render a web page. This is an excellent result, as only 5% of websites can load faster.

Performance Metrics

caribmap.org performance score

52

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

27/100

10%

LCP (Largest Contentful Paint)

Value8.3 s

2/100

25%

SI (Speed Index)

Value7.1 s

32/100

10%

TBT (Total Blocking Time)

Value150 ms

94/100

30%

CLS (Cumulative Layout Shift)

Value0.057

98/100

15%

TTI (Time to Interactive)

Value10.3 s

25/100

10%

Network Requests Diagram

caribmap.org

26 ms

www.caribmap.org

89 ms

styles.css

21 ms

displayslider2.js

26 ms

fadeslideshow1.js

21 ms

Our browser made a total of 54 requests to load all elements on the main page. We found that 91% of them (49 requests) were addressed to the original Caribmap.org, 4% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to Translate.google.com. The less responsive or slowest element that took the longest time to load (234 ms) relates to the external source S7.addthis.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 514.1 kB (32%)

Content Size

1.6 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Caribmap.org main page is 1.6 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. 55% of websites need less resources to load. Images take 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 27.4 kB

  • Original 34.2 kB
  • After minification 32.9 kB
  • After compression 6.8 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 27.4 kB or 80% of the original size.

Image Optimization

-9%

Potential reduce by 96.9 kB

  • Original 1.0 MB
  • After minification 929.8 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. Caribmap images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 375.4 kB

  • Original 524.9 kB
  • After minification 501.0 kB
  • After compression 149.6 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 375.4 kB or 72% of the original size.

CSS Optimization

-80%

Potential reduce by 14.4 kB

  • Original 18.0 kB
  • After minification 13.4 kB
  • After compression 3.6 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. Caribmap.org needs all CSS files to be minified and compressed as it can save up to 14.4 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (30%)

Requests Now

50

After Optimization

35

  • Images
  • JavaScript
  • CSS

The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Caribmap. 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 as a result speed up the page load time.

Network Requests Diagram

caribmap.org

caribmap.org

26 ms

www.caribmap.org

www.caribmap.org

89 ms

styles.css

styles.css

21 ms

displayslider2.js

displayslider2.js

26 ms

fadeslideshow1.js

fadeslideshow1.js

21 ms

fadeslideshow2.js

fadeslideshow2.js

22 ms

flashplayercheck.js

flashplayercheck.js

22 ms

AC_RunActiveContent.js

AC_RunActiveContent.js

39 ms

listmenu.js

listmenu.js

39 ms

island_dropdown.js

island_dropdown.js

38 ms

openseadragon.min.js

openseadragon.min.js

53 ms

swfobject.js

swfobject.js

41 ms

element.js

element.js

74 ms

fade1.jpg

fade1.jpg

37 ms

fade2.jpg

fade2.jpg

38 ms

fade3.jpg

fade3.jpg

37 ms

fade4.jpg

fade4.jpg

54 ms

fade5.jpg

fade5.jpg

35 ms

fade6.jpg

fade6.jpg

55 ms

addthis_widget.js

addthis_widget.js

234 ms

jquery-1.3.2.min.js

jquery-1.3.2.min.js

48 ms

jquery-ui-1.7.2.custom.min.js

jquery-ui-1.7.2.custom.min.js

82 ms

displayslider1.js

displayslider1.js

49 ms

ga.js

ga.js

24 ms

shadow.png

shadow.png

52 ms

cm_logo.gif

cm_logo.gif

55 ms

ch_logosmall.png

ch_logosmall.png

55 ms

cn_logosmall.png

cn_logosmall.png

55 ms

rightclick.js

rightclick.js

54 ms

counter_xhtml.js

counter_xhtml.js

53 ms

shadow_b.png

shadow_b.png

54 ms

__utm.gif

__utm.gif

12 ms

mobile_styles.css

mobile_styles.css

8 ms

loading.gif

loading.gif

13 ms

ui-bg_flat_75_ffffff_40x100.png

ui-bg_flat_75_ffffff_40x100.png

8 ms

slider.png

slider.png

8 ms

zoomin_rest.png

zoomin_rest.png

15 ms

zoomin_grouphover.png

zoomin_grouphover.png

11 ms

zoomin_hover.png

zoomin_hover.png

13 ms

zoomin_pressed.png

zoomin_pressed.png

13 ms

zoomout_rest.png

zoomout_rest.png

14 ms

zoomout_grouphover.png

zoomout_grouphover.png

13 ms

zoomout_hover.png

zoomout_hover.png

16 ms

zoomout_pressed.png

zoomout_pressed.png

20 ms

home_rest.png

home_rest.png

17 ms

home_grouphover.png

home_grouphover.png

19 ms

home_hover.png

home_hover.png

19 ms

home_pressed.png

home_pressed.png

19 ms

fullpage_rest.png

fullpage_rest.png

22 ms

fullpage_grouphover.png

fullpage_grouphover.png

23 ms

fullpage_hover.png

fullpage_hover.png

28 ms

fullpage_pressed.png

fullpage_pressed.png

28 ms

1644-wi-jansson.jpg

1644-wi-jansson.jpg

28 ms

1644-wi-jansson.xml

1644-wi-jansson.xml

23 ms

Accessibility Review

caribmap.org accessibility score

83

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Form elements do not have associated labels

Best Practices

caribmap.org best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

caribmap.org SEO score

90

Search Engine Optimization Advices

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Caribmap.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Caribmap.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

caribmap.org

Open Graph description is not detected on the main page of Caribmap. 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: