costco.co.uk website information.
costco.co.uk domain name is registered by .UK top-level domain registry. See the other sites registred in .UK domain zone.
Following name servers are specified for costco.co.uk domain:
- dns1.cscdns.net
- dns2.cscdns.net
and probably website costco.co.uk is hosted by AMAZON-02 - Amazon.com, Inc., US web hosting company. Check the complete list of other most popular websites hosted by AMAZON-02 - Amazon.com, Inc., US hosting company.
According to Alexa traffic rank the highest website costco.co.uk position was 24843 (in the world). The lowest Alexa rank position was 108187. Now website costco.co.uk ranked in Alexa database as number 41406 (in the world).
Website costco.co.uk Desktop speed measurement score (55/100) is better than the results of 29.37% of other sites shows that the page desktop performance can be improved.
costco.co.uk Mobile usability score (97/100) is better than the results of 49.9% of other sites and means that the page is mobile-friendly.
Mobile speed measurement score of costco.co.uk (40/100) is better than the results of 18.97% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
Weekly Rank Report
| Date | Rank | Change |
|---|---|---|
| Nov-18-2024 | 41,406 | 385 |
| Nov-17-2024 | 41,791 | 640 |
| Nov-16-2024 | 42,431 | 93 |
| Nov-15-2024 | 42,524 | -566 |
| Nov-14-2024 | 41,958 | -72 |
| Nov-13-2024 | 41,886 | 0 |
| Nov-12-2024 | 41,886 | 0 |
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costco.co.uk Rank History
Alexa can identify the popularity of a website as well as its competitors. It is important for website owners and bloggers to know their Alexa ranking because it shows how many visitors have viewed their web page. It gives them a clear idea of how popular their website is on the internet and the ranking of their competitors.
costco.co.uk whois
WHOIS is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information.
Domain name:
costco.co.uk
Data validation:
Nominet was not able to match the registrant's name and/or address against a 3rd party source on 14-Jan-2019
Registrar:
CSC Corporate Domains, Inc [Tag = CSC-CORP-DOMAINS]
URL: https://www.cscdbs.com
Relevant dates:
Registered on: 24-Nov-1998
Expiry date: 24-Nov-2024
Last updated: 06-Mar-2024
Registration status:
Registered until expiry date.
Name servers:
a1-116.akam.net
a14-67.akam.net
a28-66.akam.net
a5-64.akam.net
a6-64.akam.net
dbru.br.ns.els-gms.att.net
dmtu.mt.ns.els-gms.att.net
WHOIS lookup made at 01:30:06 11-Sep-2024
--
This WHOIS information is provided for free by Nominet UK the central registry
for .uk domain names. This information and the .uk WHOIS are:
Copyright Nominet UK 1996 - 2024.
You may not access the .uk WHOIS or use any data from it except as permitted
by the terms of use available in full at https://www.nominet.uk/whoisterms,
which includes restrictions on: (A) use of the data for advertising, or its
repackaging, recompilation, redistribution or reuse (B) obscuring, removing
or hiding any or all of this notice and (C) exceeding query rate or volume
limits. The data is provided on an 'as-is' basis and may lag behind the
register. Access may be withdrawn or restricted at any time.
costco.co.uk server information
costco.co.uk desktop page speed rank
Last tested: 2019-12-07
Desktop Speed
Bad
55/100
costco.co.uk Desktop Speed Test Quick Summary
priority - 34 Leverage browser caching
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Compressing https://www.costco.co.uk/medias/sys_master/h2e/h14/16801707884574.jpg could save 2.9KiB (21% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/hed/h64/16801707982878.jpg could save 2.7KiB (20% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/banners…h9f/16801516355614.jpg could save 2.6KiB (26% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/hec/h67/16801573896222.jpg could save 2.3KiB (24% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…h5a/14145547960350.jpg could save 2.3KiB (18% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…h56/16250817118238.jpg could save 2.2KiB (20% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…hb2/16801122844702.jpg could save 2.2KiB (11% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…ha2/16801122680862.jpg could save 2.2KiB (28% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/h67/h6f/16801126055966.jpg could save 2.1KiB (27% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…h80/15803168227358.jpg could save 1.9KiB (12% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/banners…he1/16801516552222.jpg could save 1.9KiB (33% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/hbd/h06/16801707655198.jpg could save 1.8KiB (15% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/h5d/h75/16801696940062.png could save 1.7KiB (72% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/h13/h40/16801678295070.jpg could save 1.5KiB (15% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/banners…h3c/16801517436958.jpg could save 1.3KiB (18% reduction).
Compressing https://www.costco.co.uk/_ui/responsive/theme-cost…es/btn_arrow_right.png could save 907B (52% reduction).
Compressing https://www.costco.co.uk/_ui/responsive/theme-cost…ges/btn_arrow_left.png could save 884B (51% reduction).
Compressing and resizing https://www.costco.co.uk/medias/sys_master/images/…h35/16801628553246.jpg could save 26.6KiB (76% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/banners…h95/16801707294750.jpg could save 22.2KiB (21% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/banners…h9a/16801134084126.jpg could save 15.7KiB (22% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/banners…h51/16801707491358.jpg could save 12.4KiB (14% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/h65/hc8/16801572880414.jpg could save 9.5KiB (27% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…h4d/16801125793822.jpg could save 6.8KiB (26% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/h0a/hcb/16801708212254.jpg could save 6.8KiB (29% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/h4a/h8d/16801707786270.jpg could save 6.7KiB (27% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/hdd/h35/16801707753502.jpg could save 6.4KiB (24% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…ha2/14163678167070.jpg could save 6.2KiB (26% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…hc1/11057507532830.jpg could save 5.5KiB (28% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…hf0/15715789930526.jpg could save 5.3KiB (24% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/hf6/hda/16801706082334.jpg could save 5.3KiB (22% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…hee/16286332813342.jpg could save 5.2KiB (26% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/h6b/h9b/16801126088734.jpg could save 5KiB (27% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/hd3/hf2/16801708015646.jpg could save 5KiB (21% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/h60/h96/16801708113950.jpg could save 5KiB (24% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…h32/15405776306206.jpg could save 4.8KiB (22% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…he0/16801123041310.jpg could save 4.7KiB (24% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/h0c/h62/16801708179486.jpg could save 4.7KiB (25% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…h77/16801122910238.jpg could save 4.5KiB (31% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/hbb/hf0/16801706049566.jpg could save 4KiB (30% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…h76/16148121976862.jpg could save 3.9KiB (20% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…h1c/16302128070686.jpg could save 3.9KiB (21% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/hff/h77/16801707950110.jpg could save 3.7KiB (28% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/he6/h19/16801708081182.jpg could save 3.5KiB (20% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/h17/h83/16801706115102.jpg could save 3.4KiB (29% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/h1b/h61/16801708146718.jpg could save 3.2KiB (23% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/h2e/h14/16801707884574.jpg could save 2.9KiB (21% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/hed/h64/16801707982878.jpg could save 2.7KiB (20% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/banners…h9f/16801516355614.jpg could save 2.6KiB (26% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/hec/h67/16801573896222.jpg could save 2.3KiB (24% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…h5a/14145547960350.jpg could save 2.3KiB (18% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…h56/16250817118238.jpg could save 2.2KiB (20% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…hb2/16801122844702.jpg could save 2.2KiB (11% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…ha2/16801122680862.jpg could save 2.2KiB (28% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/h67/h6f/16801126055966.jpg could save 2.1KiB (27% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/images/…h80/15803168227358.jpg could save 1.9KiB (12% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/banners…he1/16801516552222.jpg could save 1.9KiB (33% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/hbd/h06/16801707655198.jpg could save 1.8KiB (15% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/h5d/h75/16801696940062.png could save 1.7KiB (72% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/h13/h40/16801678295070.jpg could save 1.5KiB (15% reduction).
Compressing https://www.costco.co.uk/medias/sys_master/banners…h3c/16801517436958.jpg could save 1.3KiB (18% reduction).
Compressing https://www.costco.co.uk/_ui/responsive/theme-cost…es/btn_arrow_right.png could save 907B (52% reduction).
Compressing https://www.costco.co.uk/_ui/responsive/theme-cost…ges/btn_arrow_left.png could save 884B (51% reduction).
priority - 12 Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 7 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Remove render-blocking JavaScript:
https://www.costco.co.uk/_ui/shared/js/trackermediator.js
https://www.costco.co.uk/wro/libjs_responsive.js?v=186381542
https://www.costco.co.uk/_ui/shared/js/generatedVariables.js
https://www.costco.co.uk/wro/projectjs_responsive.js?v=186381542
https://www.costco.co.uk/wro/cmsjs_responsive.js?v=186381542
https://www.costco.co.uk/wro/addons_responsive.js?v=186381542
https://www.costco.co.uk/medias/sys_master/scripts…/hc7/16801527365662.js
https://www.costco.co.uk/wro/libjs_responsive.js?v=186381542
https://www.costco.co.uk/_ui/shared/js/generatedVariables.js
https://www.costco.co.uk/wro/projectjs_responsive.js?v=186381542
https://www.costco.co.uk/wro/cmsjs_responsive.js?v=186381542
https://www.costco.co.uk/wro/addons_responsive.js?v=186381542
https://www.costco.co.uk/medias/sys_master/scripts…/hc7/16801527365662.js
Optimize CSS Delivery of the following:
https://www.costco.co.uk/wro/costco_responsive.css?v=186381542
https://www.costco.co.uk/wro/addons_responsive.css?v=186381542
https://www.costco.co.uk/medias/sys_master/h75/h78…107998.css?v=186381542
https://www.costco.co.uk/css-mvc/token.css
https://www.costco.co.uk/wro/addons_responsive.css?v=186381542
https://www.costco.co.uk/medias/sys_master/h75/h78…107998.css?v=186381542
https://www.costco.co.uk/css-mvc/token.css
priority - 9 Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://costco.co.uk/
https://costco.co.uk/
https://www.costco.co.uk/
https://costco.co.uk/
https://www.costco.co.uk/
priority - 4 Prioritize visible content
Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.
Only about 4% of the final above-the-fold content could be rendered with the full HTML response.
Click to see the screenshot with only the HTML response:
priority - 0 Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 1.1KiB (27% reduction).
Minifying https://www.costco.co.uk/medias/sys_master/h75/h78…107998.css?v=186381542 could save 1.1KiB (27% reduction) after compression.
priority - 0 Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 192B (12% reduction).
Minifying https://www.costco.co.uk/medias/sys_master/scripts…/hc7/16801527365662.js could save 192B (12% reduction) after compression.
costco.co.uk Desktop Resources
| Total Resources | 124 |
| Number of Hosts | 19 |
| Static Resources | 82 |
| JavaScript Resources | 30 |
| CSS Resources | 4 |
costco.co.uk Desktop Resource Breakdown
costco.co.uk mobile page speed rank
Last tested: 2019-12-07
Mobile Speed
Bad
40/100
costco.co.uk Mobile Speed Test Quick Summary
priority - 48 Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 7 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Remove render-blocking JavaScript:
https://www.costco.co.uk/_ui/shared/js/trackermediator.js
https://www.costco.co.uk/wro/libjs_responsive.js?v=186381542
https://www.costco.co.uk/_ui/shared/js/generatedVariables.js
https://www.costco.co.uk/wro/projectjs_responsive.js?v=186381542
https://www.costco.co.uk/wro/cmsjs_responsive.js?v=186381542
https://www.costco.co.uk/wro/addons_responsive.js?v=186381542
https://www.costco.co.uk/medias/sys_master/scripts…/hc7/16801527365662.js
https://www.costco.co.uk/wro/libjs_responsive.js?v=186381542
https://www.costco.co.uk/_ui/shared/js/generatedVariables.js
https://www.costco.co.uk/wro/projectjs_responsive.js?v=186381542
https://www.costco.co.uk/wro/cmsjs_responsive.js?v=186381542
https://www.costco.co.uk/wro/addons_responsive.js?v=186381542
https://www.costco.co.uk/medias/sys_master/scripts…/hc7/16801527365662.js
Optimize CSS Delivery of the following:
https://www.costco.co.uk/wro/costco_responsive.css?v=186381542
https://www.costco.co.uk/wro/addons_responsive.css?v=186381542
https://www.costco.co.uk/medias/sys_master/h75/h78…107998.css?v=186381542
https://www.costco.co.uk/css-mvc/token.css
https://www.costco.co.uk/wro/addons_responsive.css?v=186381542
https://www.costco.co.uk/medias/sys_master/h75/h78…107998.css?v=186381542
https://www.costco.co.uk/css-mvc/token.css
priority - 45 Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://apps.bazaarvoice.com/deployments/costco-uk…production/en_GB/bv.js (5 minutes)
https://apps.bazaarvoice.com/deployments/costco-uk…line_ratings-config.js (5 minutes)
https://cdnssl.clicktale.net/www33/ptc/edd85e48-2f…5-839b-916637d15157.js (10 minutes)
https://t.clicktale.net/uxa/7baecf622dd6a.js (15 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-P7K8CG (15 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/274252…3106?v=2.9.14&r=stable (20 minutes)
https://www.costco.co.uk/_ui/shared/js/trackermediator.js (23.7 minutes)
https://www.costco.co.uk/_ui/shared/js/generatedVariables.js (60 minutes)
https://www.costco.co.uk/medias/sys_master/h75/h78…107998.css?v=186381542 (60 minutes)
https://www.costco.co.uk/medias/sys_master/scripts…/hc7/16801527365662.js (60 minutes)
https://www.google-analytics.com/plugins/ua/ec.js (60 minutes)
https://www.costco.co.uk/medias/sys_master/images/…h23/16272134930462.jpg (71.5 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
https://www.costco.co.uk/medias/sys_master/images/…ha2/14163678167070.jpg (2 hours)
https://d2oh4tlt9mrke9.cloudfront.net/Record/js/sessioncam.recorder.js (4 hours)
https://www.costco.co.uk/medias/sys_master/banners…h38/16801126154270.png (6.2 hours)
https://www.costco.co.uk/medias/sys_master/images/…h4d/16801125793822.jpg (6.2 hours)
https://www.costco.co.uk/medias/sys_master/h5d/h75/16801696940062.png (6.3 hours)
https://www.costco.co.uk/medias/sys_master/hf6/hda/16801706082334.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/h67/h6f/16801126055966.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/h6b/h9b/16801126088734.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/h2e/h14/16801707884574.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/hbb/hf0/16801706049566.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/h65/hc8/16801572880414.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/images/…he0/16801123041310.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/h60/h96/16801708113950.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/hdd/h35/16801707753502.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/h0c/h62/16801708179486.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/images/…hb2/16801122844702.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/images/…ha2/16801122680862.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/h17/h83/16801706115102.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/h13/h40/16801678295070.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/banners…h9a/16801134084126.jpg (6.7 hours)
https://www.costco.co.uk/medias/sys_master/images/…h77/16801122910238.jpg (6.9 hours)
https://www.costco.co.uk/medias/sys_master/hed/h64/16801707982878.jpg (6.9 hours)
https://www.costco.co.uk/medias/sys_master/hd3/hf2/16801708015646.jpg (7.4 hours)
https://www.costco.co.uk/medias/sys_master/h1b/h61/16801708146718.jpg (7.4 hours)
https://www.costco.co.uk/medias/sys_master/h4a/h8d/16801707786270.jpg (7.4 hours)
https://www.costco.co.uk/medias/sys_master/he6/h19/16801708081182.jpg (7.4 hours)
https://www.costco.co.uk/medias/sys_master/hbd/h06/16801707655198.jpg (7.4 hours)
https://www.costco.co.uk/medias/sys_master/h0a/hcb/16801708212254.jpg (7.4 hours)
https://www.costco.co.uk/medias/sys_master/hff/h77/16801707950110.jpg (7.4 hours)
https://www.costco.co.uk/medias/sys_master/hec/h67/16801573896222.jpg (7.4 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…onts/costco-icons.woff (9.3 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…rFlags/flag-Mexico.svg (12 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…erFlags/flag-Korea.svg (12.2 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…rFlags/flag-Canada.svg (12.2 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…ooterFlags/flag-UK.svg (14.5 hours)
https://www.costco.co.uk/_ui/responsive/common/images/spinner.gif (14.5 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…oterFlags/flag-USA.svg (14.5 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…Flags/flag-Iceland.svg (14.9 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…erFlags/flag-Japan.svg (14.9 hours)
https://www.costco.co.uk/medias/sys_master/images/…hee/16286332813342.jpg (16.9 hours)
https://www.costco.co.uk/medias/sys_master/images/…h2d/15244444205086.svg (17.9 hours)
https://www.costco.co.uk/medias/sys_master/images/…h06/15244444106782.svg (18.8 hours)
https://www.costco.co.uk/medias/sys_master/images/…hf0/15715789930526.jpg (19.2 hours)
https://www.costco.co.uk/medias/sys_master/images/…h5a/14145547960350.jpg (19.6 hours)
https://www.costco.co.uk/medias/sys_master/images/…h32/15405776306206.jpg (20.8 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…rFlags/flag-Taiwan.svg (22.5 hours)
https://www.costco.co.uk/medias/sys_master/banners…h3d/16801707458590.jpg (24 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…es/btn_arrow_right.png (24 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…ges/btn_arrow_left.png (24 hours)
https://www.costco.co.uk/medias/sys_master/banners…h01/16801707163678.jpg (24 hours)
https://apps.bazaarvoice.com/deployments/costco-uk…line_ratings-config.js (5 minutes)
https://cdnssl.clicktale.net/www33/ptc/edd85e48-2f…5-839b-916637d15157.js (10 minutes)
https://t.clicktale.net/uxa/7baecf622dd6a.js (15 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-P7K8CG (15 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/274252…3106?v=2.9.14&r=stable (20 minutes)
https://www.costco.co.uk/_ui/shared/js/trackermediator.js (23.7 minutes)
https://www.costco.co.uk/_ui/shared/js/generatedVariables.js (60 minutes)
https://www.costco.co.uk/medias/sys_master/h75/h78…107998.css?v=186381542 (60 minutes)
https://www.costco.co.uk/medias/sys_master/scripts…/hc7/16801527365662.js (60 minutes)
https://www.google-analytics.com/plugins/ua/ec.js (60 minutes)
https://www.costco.co.uk/medias/sys_master/images/…h23/16272134930462.jpg (71.5 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
https://www.costco.co.uk/medias/sys_master/images/…ha2/14163678167070.jpg (2 hours)
https://d2oh4tlt9mrke9.cloudfront.net/Record/js/sessioncam.recorder.js (4 hours)
https://www.costco.co.uk/medias/sys_master/banners…h38/16801126154270.png (6.2 hours)
https://www.costco.co.uk/medias/sys_master/images/…h4d/16801125793822.jpg (6.2 hours)
https://www.costco.co.uk/medias/sys_master/h5d/h75/16801696940062.png (6.3 hours)
https://www.costco.co.uk/medias/sys_master/hf6/hda/16801706082334.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/h67/h6f/16801126055966.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/h6b/h9b/16801126088734.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/h2e/h14/16801707884574.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/hbb/hf0/16801706049566.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/h65/hc8/16801572880414.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/images/…he0/16801123041310.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/h60/h96/16801708113950.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/hdd/h35/16801707753502.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/h0c/h62/16801708179486.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/images/…hb2/16801122844702.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/images/…ha2/16801122680862.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/h17/h83/16801706115102.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/h13/h40/16801678295070.jpg (6.6 hours)
https://www.costco.co.uk/medias/sys_master/banners…h9a/16801134084126.jpg (6.7 hours)
https://www.costco.co.uk/medias/sys_master/images/…h77/16801122910238.jpg (6.9 hours)
https://www.costco.co.uk/medias/sys_master/hed/h64/16801707982878.jpg (6.9 hours)
https://www.costco.co.uk/medias/sys_master/hd3/hf2/16801708015646.jpg (7.4 hours)
https://www.costco.co.uk/medias/sys_master/h1b/h61/16801708146718.jpg (7.4 hours)
https://www.costco.co.uk/medias/sys_master/h4a/h8d/16801707786270.jpg (7.4 hours)
https://www.costco.co.uk/medias/sys_master/he6/h19/16801708081182.jpg (7.4 hours)
https://www.costco.co.uk/medias/sys_master/hbd/h06/16801707655198.jpg (7.4 hours)
https://www.costco.co.uk/medias/sys_master/h0a/hcb/16801708212254.jpg (7.4 hours)
https://www.costco.co.uk/medias/sys_master/hff/h77/16801707950110.jpg (7.4 hours)
https://www.costco.co.uk/medias/sys_master/hec/h67/16801573896222.jpg (7.4 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…onts/costco-icons.woff (9.3 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…rFlags/flag-Mexico.svg (12 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…erFlags/flag-Korea.svg (12.2 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…rFlags/flag-Canada.svg (12.2 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…ooterFlags/flag-UK.svg (14.5 hours)
https://www.costco.co.uk/_ui/responsive/common/images/spinner.gif (14.5 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…oterFlags/flag-USA.svg (14.5 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…Flags/flag-Iceland.svg (14.9 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…erFlags/flag-Japan.svg (14.9 hours)
https://www.costco.co.uk/medias/sys_master/images/…hee/16286332813342.jpg (16.9 hours)
https://www.costco.co.uk/medias/sys_master/images/…h2d/15244444205086.svg (17.9 hours)
https://www.costco.co.uk/medias/sys_master/images/…h06/15244444106782.svg (18.8 hours)
https://www.costco.co.uk/medias/sys_master/images/…hf0/15715789930526.jpg (19.2 hours)
https://www.costco.co.uk/medias/sys_master/images/…h5a/14145547960350.jpg (19.6 hours)
https://www.costco.co.uk/medias/sys_master/images/…h32/15405776306206.jpg (20.8 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…rFlags/flag-Taiwan.svg (22.5 hours)
https://www.costco.co.uk/medias/sys_master/banners…h3d/16801707458590.jpg (24 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…es/btn_arrow_right.png (24 hours)
https://www.costco.co.uk/_ui/responsive/theme-cost…ges/btn_arrow_left.png (24 hours)
https://www.costco.co.uk/medias/sys_master/banners…h01/16801707163678.jpg (24 hours)
priority - 34 Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://costco.co.uk/
https://costco.co.uk/
https://www.costco.co.uk/
https://costco.co.uk/
https://www.costco.co.uk/
priority - 22 Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 210.9KiB (26% reduction).
Compressing and resizing https://www.costco.co.uk/medias/sys_master/banners…h38/16801126154270.png could save 43.8KiB (88% reduction).
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Compressing https://www.costco.co.uk/_ui/responsive/theme-cost…es/btn_arrow_right.png could save 907B (52% reduction).
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priority - 16 Prioritize visible content
Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.
Only about 6% of the final above-the-fold content could be rendered with the full HTML response.
Click to see the screenshot with only the HTML response:
priority - 0 Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 4KiB (17% reduction).
Minifying https://cdnssl.clicktale.net/www/WR-latest.js could save 3.8KiB (18% reduction) after compression.
Minifying https://www.costco.co.uk/medias/sys_master/scripts…/hc7/16801527365662.js could save 192B (12% reduction) after compression.
Minifying https://www.costco.co.uk/medias/sys_master/scripts…/hc7/16801527365662.js could save 192B (12% reduction) after compression.
priority - 0 Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 1.1KiB (27% reduction).
Minifying https://www.costco.co.uk/medias/sys_master/h75/h78…107998.css?v=186381542 could save 1.1KiB (27% reduction) after compression.
costco.co.uk Mobile Resources
| Total Resources | 118 |
| Number of Hosts | 19 |
| Static Resources | 72 |
| JavaScript Resources | 30 |
| CSS Resources | 4 |
costco.co.uk Mobile Resource Breakdown
costco.co.uk mobile page usability
Last tested: 2019-12-07
Mobile Usability
Good
97/100
costco.co.uk Mobile Usability Test Quick Summary
priority - 2 Size tap targets appropriately
Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.
The tap target
<a href="#skip-to-content" class="skiplink">Skip to content</a> and 1 others are close to other tap targets.The tap target
<a href="/cookie-policy">Cookie Policy.</a> is close to 1 other tap targets.The tap target
<div class="owl-pagination"></div> is close to 1 other tap targets.The tap target
<div class="owl-page active"></div> and 6 others are close to other tap targets.The tap target
<div class="owl-p-buttons stop-btn"></div> is close to 1 other tap targets.The tap target
<div class="owl-p-buttons stop-btn"></div> is close to 1 other tap targets.The tap target
<a id="797cf30f-cf45-…6-9f89a0b3065e" href="/Sports-Spas-L…-Bike/p/310972" class="bv_main_container bv_hover">0(0)</a> and 9 others are close to other tap targets.The tap target
<div class="bv_text">0</div> and 10 others are close to other tap targets.The tap target
<a href="https://www.co…ntent=20180219">Car Hire Reserve Now</a> and 3 others are close to other tap targets.The tap target
<label for="email">Get Email Offers</label> is close to 1 other tap targets.The tap target
<input id="email" type="text" name="email" class="form-control"> is close to 1 other tap targets.The tap target
<input type="submit" class="btn btn-primary"> is close to 1 other tap targets.The tap target
<a href="/terms">Terms & Conditions</a> and 3 others are close to other tap targets.costco.co.uk similar domains
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costco.co.uk Ping
Ping is a networking utility tool to test if a particular host is reachable. It is a diagnostic that checks reachability of a host on an Internet Protocol (IP) network. In a computer network, a ping test is a way of sending messages from one host to another. Aside from checking if the host is connected to a network, ping also gives indicators of the reliability and general speed of the connection.
costco.co.uk TRACEROUTE
Traceroute is a network diagnostic tool used to track the pathway taken by a packet on an IP network from source to destination. Traceroute also records the time taken for each hop the packet makes during its route to the destination. Traceroute uses ICMP (Internet Control Message Protocol) echo packets with variable time to live values. The response time of each hop is calculated. To guarantee accuracy, each hop is queried multiple times (usually three times) to better measure the response of that particular hop.