11.4 sec in total
293 ms
10.9 sec
214 ms
Click here to check amazing Diving Heritage content for United Kingdom. Otherwise, check out these important facts you probably never knew about divingheritage.com
DivingHeritage brings a tribute to all involved in the development of professional diving. The diving helmet museum has over 500 diving helmets and much more on display!
Visit divingheritage.comWe analyzed Divingheritage.com page load time and found that the first response time was 293 ms and then it took 11.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
divingheritage.com performance score
name
value
score
weighting
Value3.6 s
32/100
10%
Value3.6 s
61/100
25%
Value5.1 s
61/100
10%
Value10 ms
100/100
30%
Value0.1
90/100
15%
Value4.0 s
87/100
10%
293 ms
440 ms
292 ms
8 ms
20 ms
Our browser made a total of 54 requests to load all elements on the main page. We found that 83% of them (45 requests) were addressed to the original Divingheritage.com, 7% (4 requests) were made to Military.com and 4% (2 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (10 sec) relates to the external source Send-a-link.com.
Page size can be reduced by 26.4 kB (65%)
40.7 kB
14.3 kB
In fact, the total size of Divingheritage.com main page is 40.7 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 40% of websites need less resources to load. HTML takes 23.5 kB which makes up the majority of the site volume.
Potential reduce by 18.2 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 18.2 kB or 78% of the original size.
Potential reduce by 0 B
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. Diving Heritage images are well optimized though.
Potential reduce by 8.2 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 8.2 kB or 59% of the original size.
We found no issues to fix!
45
45
The browser has sent 45 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Diving Heritage. According to our analytics all requests are already optimized.
divingheritage.com
293 ms
www.divingheritage.com
440 ms
jquery.js
292 ms
brand
8 ms
brandjs.js
20 ms
3.js
10010 ms
badge_medal_navy.gif
150 ms
1stdiver.gif
111 ms
header-bg.jpg
204 ms
indexk3.gif
202 ms
indexk1.gif
300 ms
indexk6.gif
301 ms
indexk7.gif
353 ms
indexk4.gif
359 ms
aboutknop.gif
370 ms
links1.gif
388 ms
bottlemail.gif
390 ms
20000-Divers-under_small.jpg
611 ms
H-Rcolour-Burchett.jpg
619 ms
friedrich-flohr-1.jpg
608 ms
Unknown-Brazilian-Helmet-1.jpg
626 ms
DiverTelephone-Drager_Draegerwerke-Lubeck-1.jpg
478 ms
Italy_salvas1.jpg
738 ms
ch-petit1.jpg
743 ms
JohnDate-IMG_0439.jpg
802 ms
SiebeGormanFlange-small.jpg
734 ms
NemrodSpain-laFoto_hompage-roller.jpg
814 ms
Choa-JapHelmet_lips068.jpg
940 ms
helmet-tee-wrench2-preview.jpg
847 ms
helmet-tee-wrench5-preview.jpg
847 ms
equipment_PossiblyDREAGER3-preview.jpg
1577 ms
FisheriesHelmet_helmet6.jpg
978 ms
Wojtusiak-Adriatic%20%201937%20(Split).jpg
953 ms
John%20Date%20dive%20helmet%20015.jpg
983 ms
siebe3bout-IMG_0076.jpg
1564 ms
experiment_0439.jpg
1065 ms
Siebe%20Gorman%206%20bolt-4.JPG
1063 ms
Siebe%20Gorman%206%20bolt-3.jpg
1084 ms
Craftsweld_IMG_0408.JPG
1128 ms
vinceknives%20002.jpg
1155 ms
SiebeGormanNoBolt_0261.JPG
1180 ms
IMG_0368.JPG
1209 ms
updates_log-2017.htm
1231 ms
branding.png
28 ms
x-click-butcc-donate.gif
15 ms
IMG_0377.JPG
1149 ms
badge_medal_navy.gif
346 ms
homepage_image.jpg
1098 ms
index.1.gif
1100 ms
souvenirbanner.gif
1065 ms
webaward2003.jpg
1053 ms
hdslogo.jpg
1075 ms
badge_medal_navy.gif
65 ms
badge_medal_navy.gif
81 ms
divingheritage.com accessibility score
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
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible name
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
divingheritage.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Issues were logged in the Issues panel in Chrome Devtools
divingheritage.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
EN
EN
WINDOWS-1252
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Divingheritage.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 Divingheritage.com main page’s claimed encoding is windows-1252. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
divingheritage.com
Open Graph description is not detected on the main page of Diving Heritage. 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: