4.1 sec in total
287 ms
3.3 sec
502 ms
Visit ndac.co.uk now to see the best up-to-date NDAC content for United Kingdom and also check out these interesting facts you probably never knew about ndac.co.uk
Notice of site closure. The National Diving & Activity Centre Chepstow Site is permanently closed. We are not taking bookings for leisure activities or public diving. We’d like to thank all our custom...
Visit ndac.co.ukWe analyzed Ndac.co.uk page load time and found that the first response time was 287 ms and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
ndac.co.uk performance score
name
value
score
weighting
Value2.2 s
78/100
10%
Value3.1 s
74/100
25%
Value2.3 s
98/100
10%
Value120 ms
97/100
30%
Value0
100/100
15%
Value4.6 s
81/100
10%
287 ms
535 ms
187 ms
188 ms
191 ms
Our browser made a total of 111 requests to load all elements on the main page. We found that 53% of them (59 requests) were addressed to the original Ndac.co.uk, 31% (34 requests) were made to Metalfury.co.uk and 3% (3 requests) were made to Static.tacdn.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Ndac.co.uk.
Page size can be reduced by 422.6 kB (25%)
1.7 MB
1.2 MB
In fact, the total size of Ndac.co.uk 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. 40% of websites need less resources to load. Images take 1.0 MB which makes up the majority of the site volume.
Potential reduce by 105.7 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 105.7 kB or 73% of the original size.
Potential reduce by 9.1 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. NDAC images are well optimized though.
Potential reduce by 288.8 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 288.8 kB or 63% of the original size.
Potential reduce by 19.0 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. Ndac.co.uk needs all CSS files to be minified and compressed as it can save up to 19.0 kB or 84% of the original size.
Number of requests can be reduced by 24 (29%)
84
60
The browser has sent 84 CSS, Javascripts, AJAX and image requests in order to completely render the main page of NDAC. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.
ndac.co.uk
287 ms
www.ndac.co.uk
535 ms
variousndacscripts.js
187 ms
ndac_style_sheet01.css
188 ms
home_page_cinema01.css
191 ms
AC_RunActiveContent.js
195 ms
plusone.js
60 ms
brand
21 ms
current-opening-times.js
195 ms
brand
31 ms
random_header_image_generator.js
207 ms
wejs
118 ms
cb=gapi.loaded_0
15 ms
ga.js
15 ms
NDAC-logo_200px.gif
300 ms
150_logo-11900-2.png
72 ms
facebook_40px.gif
294 ms
twitter-logo_40.gif
293 ms
trip-advisor-150px.gif
292 ms
RoSPA_member_50px.gif
293 ms
fids_050px.gif
294 ms
servicing_icon050.gif
425 ms
sita-050px.gif
428 ms
wye-valley-fod-tourism-assoc.jpg
434 ms
SDI-TDI_40_animated.gif
469 ms
padi5star75_animated.gif
469 ms
pixel.gif
146 ms
padi2.gif
162 ms
green1x1_5bbf1d.gif
179 ms
dive_equipment_250.jpg
220 ms
ndac_servicing250.gif
289 ms
trip-advisor-home-f1.jpg
323 ms
google_custom_search_watermark.gif
60 ms
__utm.gif
44 ms
addthis_widget.js
41 ms
feedbackscript.js
390 ms
wigwam_250_t_1.jpg
303 ms
wigwam_250_b_1.jpg
320 ms
siteplans-250_f1.jpg
361 ms
the_view_door_250_homepage.jpg
395 ms
ndac_location_250_f1.jpg
486 ms
top_the-wire.jpg
489 ms
book_now_star_150.gif
594 ms
base_the-wire.jpg
537 ms
membership_card_250.jpg
645 ms
giftcard_300.jpg
660 ms
saltfree-home-banner_250.jpg
663 ms
facebook-logo-200x100.jpg
666 ms
twitter_logo_200x100.jpg
715 ms
metalfurylink.gif
782 ms
quote_open_sm.gif
824 ms
atomic-aquatics-easter_150.jpg
838 ms
theswing.jpg
848 ms
diveschool150x50.gif
853 ms
2016-03_sentinel-red-head-150.jpg
902 ms
general_jobs-150.jpg
980 ms
2016-01_sup_150.jpg
1002 ms
book_on_the_wire-1.jpg
1015 ms
7000FacebookLikes150.jpg
1030 ms
bbc-saltfree-ndac-150.jpg
1028 ms
wigwam-model-150.jpg
1090 ms
trip-advisor-150px.gif
1156 ms
scores-on-the-doors_150.gif
1183 ms
06-2015_bungee_150x50.jpg
1178 ms
muvi-veho-150.gif
1109 ms
WidgetEmbed-selfserveprop
25 ms
150.gif
1098 ms
wire-improvements_150.jpg
1149 ms
segway.jpg
1200 ms
cdswidSSP-v2414594452a.css%20%27%29%3B
3 ms
cdswidgets_m-c-v2102084671a.js
46 ms
cdswidSSP-v2414594452a.css
46 ms
dive_equipment_250.jpg
249 ms
diveschool.jpg
1170 ms
flyboards.jpg
1127 ms
trip-advisor-home-f1.jpg
432 ms
wigwam_250_t_1.jpg
251 ms
wigwam_250_b_1.jpg
238 ms
siteplans-250_f1.jpg
387 ms
welcome.jpg
1012 ms
theview.jpg
1019 ms
glamping.jpg
1074 ms
thewire.jpg
1132 ms
the_view_door_250_homepage.jpg
336 ms
theswing2.jpg
1146 ms
theswing3.jpg
1162 ms
300lo.json
22 ms
sh.8e5f85691f9aaa082472a194.html
52 ms
ndac_location_250_f1.jpg
366 ms
42 ms
top_the-wire.jpg
321 ms
theswing4.jpg
1050 ms
trisupmay2016.jpg
1051 ms
base_the-wire.jpg
361 ms
dive-school-250px.gif
1086 ms
009ed9_1x1px.gif
1103 ms
saltfree-home-banner_250.jpg
415 ms
theswing.jpg
174 ms
general_jobs-150.jpg
92 ms
segway.jpg
507 ms
diveschool.jpg
506 ms
flyboards.jpg
539 ms
welcome.jpg
451 ms
theview.jpg
582 ms
glamping.jpg
435 ms
thewire.jpg
838 ms
theswing2.jpg
848 ms
theswing3.jpg
908 ms
theswing4.jpg
824 ms
trisupmay2016.jpg
841 ms
s4.0.gif
15 ms
ndac.co.uk accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
<html> element does not have a [lang] attribute
ndac.co.uk best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
ndac.co.uk SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
robots.txt is not valid
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ndac.co.uk 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 Ndac.co.uk 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.
ndac.co.uk
Open Graph description is not detected on the main page of NDAC. 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: