costco.com.tw
Costco 好市多線上購物
Last scanned Jul 26, 2026, 5:47 AM
Overall score
Great
Summary
Costco好市多線上購物提供手機、電視、數位家電、冰箱、家具、珠寶鑽石、咖啡、休閒零食、冷凍食品、飲料茶水、美食旅遊票券，線上獨家商品皆在Costco好市多線上�… This website uses Angular. SEO is good (75/100) and accessibility is excellent (90/100). Security scores good (85/100) and performance good (80/100). Top issue: Meta description longer than 160 characters.
Costco好市多線上購物提供手機、電視、數位家電、冰箱、家具、珠寶鑽石、咖啡、休閒零食、冷凍食品、飲料茶水、美食旅遊票券，線上獨家商品皆在Costco好市多線上購物。
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.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
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
977 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
Costco好市多線上購物提供手機、電視、數位家電、冰箱、家具、珠寶鑽石、咖啡、休閒零食、冷凍食品、飲料茶水、美食旅遊票券，線上獨家商品皆在Costco好市多線上購物。
Meta tags
- Title
- Costco 好市多線上購物
- Description
- Costco好市多線上購物提供手機、電視、數位家電、冰箱、家具、珠寶鑽石、咖啡、休閒零食、冷凍食品、飲料茶水、美食旅遊票券，線上獨家商品皆在Costco好市多線上購物。
- Canonical
- https://www.costco.com.tw/
- Language
- zh-TW
- 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
- 175
- 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 12 · H3 8
Links
622 internal · 73 external · 20 broken
Images
432 total · 12 missing alt
Scripts / Styles
18 scripts · 3 stylesheets
JS / CSS size
251 KB · 211 KB
Page size
2.1 MB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Meta description longer than 160 characters
- No H1 heading found
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- No H1 heading found
Scan details
- Requested URL
- https://costco.com.tw
- Final URL
- https://www.costco.com.tw:443/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 933 ms
- HTML size
- 2.1 MB
- Redirect chain
- https://costco.com.tw → https://www.costco.com.tw:443/
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Frequently asked questions
- What technology does costco.com.tw use?
- costco.com.tw is built with Angular.
- Is costco.com.tw secure (HTTPS)?
- Yes. costco.com.tw uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Jan 20, 2027.
- Who hosts costco.com.tw?
- Hosting provider information for costco.com.tw is not available yet.
- What is costco.com.tw's SEO score?
- costco.com.tw scored 75/100 for SEO in the latest analysis (fair).
- What is costco.com.tw's overall website score?
- costco.com.tw has an overall SiteGraph score of 82/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card