costco.com.au
Member Warehouse for Bulk Buys & Quality Brands | Costco Australia
Last scanned Jul 26, 2026, 1:49 PM
Overall score
Fair
Summary
Costco is Australia's premium membership club and retailer for top brands & bulk buys. This website uses Angular. SEO is good (75/100) and accessibility is good (75/100). Security scores good (85/100) and performance fair (70/100). Top issue: Title longer than 60 characters.
Costco Wholesale Australia
Costco is Australia's premium membership club and retailer for top brands & bulk buys. Shop for exclusive brands, or bulk buy groceries at unbeatable prices.
Top issues to fix
9 issues found · 1 high priority
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
2 cookies without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Title longer than 60 characters
SEOShorten the title to under 60 characters so search results don't truncate it.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
+3 more issues — details in the sections below.
SEO
4 issue(s) found
Performance
1.35 s
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Organization
Company details published in this site's own structured data.
Meta tags
- Title
- Member Warehouse for Bulk Buys & Quality Brands | Costco Australia
- Description
- Costco is Australia's premium membership club and retailer for top brands & bulk buys. Shop for exclusive brands, or bulk buy groceries at unbeatable prices.
- Canonical
- https://www.costco.com.au/
- Language
- en-AU
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- index,follow
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- DigiCert Inc
- Subject
- prod-sip.costco.co.uk
- Valid from
- Jul 13, 2026
- Valid to
- Jan 20, 2027
- Days until expiry
- 176
- SAN domains
- prod-sip.costco.co.uk, costcowholesalees.costco.es, costcowholesalefr.costco.fr, media-prod-sip.costco.co.kr, media-prod-sip.costco.co.uk, media-prod-sip.costco.com.mx, media-prod-sip.costco.com.tw, media.costco.co.jp, media.costco.co.kr, media.costco.co.nz, media.costco.co.uk, media.costco.com.au, media.costco.com.mx, media.costco.com.tw, media.costco.es, media.costco.fr, media.costco.is, media.costco.se, prod-sip.costco.co.jp, prod-sip.costco.co.kr, prod-sip.costco.com.au, prod-sip.costco.com.mx, prod-sip.costco.com.tw, prod-sip.costco.es, prod-sip.costco.fr, prod-sip.costco.is, signin-intl.costco.com, signinapi-intl.costco.com, www.costco.co.jp, www.costco.co.kr, www.costco.co.nz, www.costco.co.uk, www.costco.com.au, www.costco.com.mx, www.costco.com.tw, www.costco.es, www.costco.fr, www.costco.is, www.costco.se, www.costcowholesalees.costco.es, www.costcowholesalefr.costco.fr, www.occ.costco.co.jp
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 2 cookie(s) observed
Content & assets
Headings
H1 0 · H2 11 · H3 2
Links
626 internal · 49 external · 6 broken
Images
290 total · 119 missing alt
Scripts / Styles
18 scripts · 3 stylesheets
JS / CSS size
125 KB · 253 KB
Page size
1.5 MB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Title longer than 60 characters
- No H1 heading found
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- More than 20% of images are missing alt text
- No H1 heading found
Scan details
- Requested URL
- https://costco.com.au
- Final URL
- https://www.costco.com.au:443/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 1.32 s
- HTML size
- 1.5 MB
- Redirect chain
- https://costco.com.au → https://www.costco.com.au:443/
See something wrong on this report? Request a correction
Related websites
Same technology stack
1inch.com
1inch | Swap Crypto Tokens at the Best Rates in DeFi
viceonline.app
Flex City Web Store — Official Shop & Special Offers
shaw.ca
Mobile, Internet, TV, Home Monitoring, Home phone - Rogers
fido.ca
Mobile Phones, Plans and More - Fido
shawcable.net
Mobile, Internet, TV, Home Monitoring, Home phone - Rogers
weremember.com
Create an Online Memorial and Share Memories | We Remember
Frequently asked questions
- What technology does costco.com.au use?
- costco.com.au is built with Angular.
- Is costco.com.au secure (HTTPS)?
- Yes. costco.com.au uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Jan 20, 2027.
- Who hosts costco.com.au?
- Hosting provider information for costco.com.au is not available yet.
- What is costco.com.au's SEO score?
- costco.com.au scored 75/100 for SEO in the latest analysis (fair).
- What is costco.com.au's overall website score?
- costco.com.au has an overall SiteGraph score of 76/100, combining SEO, performance, security, and accessibility.
- What company operates costco.com.au?
- costco.com.au is operated by Costco Wholesale Australia. Costco is Australia's premium membership club and retailer for top brands & bulk buys. Shop for exclusive brands, or bulk buy groceries at unbeatable prices.
OpenGraph & Twitter Card
OpenGraph
Twitter Card