Tools & Wizards About Us
caribmap.org screenshot

Report Summary

  • 56

    Performance

    Renders faster than
    72% of other websites

  • 63

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

caribmap.org

Caribmap - A cartographic history of Caribbean islands

Page Load Speed

634 ms in total

First Response

17 ms

Resources Loaded

523 ms

Page Rendered

94 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 17 ms and then it took 617 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

caribmap.org performance score

56

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

23/100

10%

LCP (Largest Contentful Paint)

Value8.9 s

1/100

25%

SI (Speed Index)

Value5.0 s

63/100

10%

TBT (Total Blocking Time)

Value120 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.006

100/100

15%

TTI (Time to Interactive)

Value9.8 s

28/100

10%

Network Requests Diagram

caribmap.org

17 ms

www.caribmap.org

89 ms

bootstrap.min.css

67 ms

jquery.min.js

53 ms

popper.min.js

56 ms

Our browser made a total of 56 requests to load all elements on the main page. We found that 82% of them (46 requests) were addressed to the original Caribmap.org, 4% (2 requests) were made to Maxcdn.bootstrapcdn.com and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (348 ms) relates to the external source S7.addthis.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 515.4 kB (31%)

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. 65% 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 28.4 kB

  • Original 35.2 kB
  • After minification 33.1 kB
  • After compression 6.9 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 28.4 kB or 80% of the original size.

Image Optimization

-9%

Potential reduce by 96.9 kB

  • Original 1.0 MB
  • After minification 931.6 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

-68%

Potential reduce by 374.8 kB

  • Original 554.4 kB
  • After minification 530.8 kB
  • After compression 179.7 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 374.8 kB or 68% of the original size.

CSS Optimization

-81%

Potential reduce by 15.4 kB

  • Original 19.0 kB
  • After minification 13.2 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 15.4 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (38%)

Requests Now

52

After Optimization

32

  • Images
  • JavaScript
  • CSS

The browser has sent 52 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 18 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

caribmap.org

caribmap.org

17 ms

www.caribmap.org

www.caribmap.org

89 ms

bootstrap.min.css

bootstrap.min.css

67 ms

jquery.min.js

jquery.min.js

53 ms

popper.min.js

popper.min.js

56 ms

bootstrap.min.js

bootstrap.min.js

92 ms

font-awesome.min.css

font-awesome.min.css

58 ms

displayslider2.js

displayslider2.js

31 ms

fadeslideshow1.js

fadeslideshow1.js

31 ms

flashplayercheck.js

flashplayercheck.js

31 ms

AC_RunActiveContent.js

AC_RunActiveContent.js

30 ms

listmenu.js

listmenu.js

30 ms

island_dropdown.js

island_dropdown.js

45 ms

openseadragon.min.js

openseadragon.min.js

60 ms

swfobject.js

swfobject.js

46 ms

element.js

element.js

90 ms

addthis_widget.js

addthis_widget.js

348 ms

jquery-1.3.2.min.js

jquery-1.3.2.min.js

18 ms

jquery-ui-1.7.2.custom.min.js

jquery-ui-1.7.2.custom.min.js

34 ms

displayslider1.js

displayslider1.js

23 ms

rightclick.js

rightclick.js

7 ms

counter_xhtml.js

counter_xhtml.js

16 ms

styles.css

styles.css

7 ms

ga.js

ga.js

20 ms

cm_logo.gif

cm_logo.gif

28 ms

fade1.jpg

fade1.jpg

31 ms

fade2.jpg

fade2.jpg

28 ms

fade3.jpg

fade3.jpg

30 ms

fade4.jpg

fade4.jpg

28 ms

fade5.jpg

fade5.jpg

27 ms

fade6.jpg

fade6.jpg

31 ms

ch_logosmall.png

ch_logosmall.png

29 ms

cn_logosmall.png

cn_logosmall.png

29 ms

__utm.gif

__utm.gif

11 ms

mobile_styles.css

mobile_styles.css

7 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

10 ms

zoomin_grouphover.png

zoomin_grouphover.png

12 ms

zoomin_hover.png

zoomin_hover.png

12 ms

zoomin_pressed.png

zoomin_pressed.png

12 ms

zoomout_rest.png

zoomout_rest.png

11 ms

zoomout_grouphover.png

zoomout_grouphover.png

12 ms

zoomout_hover.png

zoomout_hover.png

15 ms

zoomout_pressed.png

zoomout_pressed.png

18 ms

home_rest.png

home_rest.png

16 ms

home_grouphover.png

home_grouphover.png

18 ms

home_hover.png

home_hover.png

17 ms

home_pressed.png

home_pressed.png

17 ms

fullpage_rest.png

fullpage_rest.png

20 ms

fullpage_grouphover.png

fullpage_grouphover.png

22 ms

fullpage_hover.png

fullpage_hover.png

22 ms

fullpage_pressed.png

fullpage_pressed.png

28 ms

1644-wi-jansson.jpg

1644-wi-jansson.jpg

24 ms

1644-wi-jansson.xml

1644-wi-jansson.xml

23 ms

cm1681-1650-westindies-jansson.jpg

cm1681-1650-westindies-jansson.jpg

7 ms

Accessibility Review

caribmap.org accessibility score

63

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

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

Best Practices

caribmap.org best practices score

58

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

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

caribmap.org SEO score

85

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

Image elements do not have [alt] attributes

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

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: