stack.com website report
Most Reliable App & Cross Browser Testing Platform | BrowserStack
Last scanned · 2 views
Overall score
Fair
About stack.com
browserstack.com is a website. It describes itself as “Instant access to 3500+ browsers and real iOS and Android devices for cross browser testing”. The site runs on WordPress, delivered through Fastly. It is also on X, Facebook and LinkedIn.
Score profile
Top issues to fix
4 issues found · 1 high priority
TLS certificate expires in 12 days
SecurityRenew now (or enable auto-renewal) — an expired certificate blocks visitors with a full-page browser warning.
Title longer than 60 characters
SEOShorten the title to under 60 characters so search results don't truncate it.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
How it compares
stack.com scores higher overall than 18% of the 25,253 WordPress sites we have scanned.
vs. All scanned sites
163,243 sitesThe dot is this site; the tick is the typical (median) score for the group. The number on the right is the percentile: the share of the group this site scores above.
vs. WordPress sites
25,253 sitesThe dot is this site; the tick is the typical (median) score for the group. The number on the right is the percentile: the share of the group this site scores above.
Technology stack
stack.com is built with WordPress and Nginx.
Hosting & DNS
stack.com is delivered through Fastly.
- IP address
- 151.101.193.242
- ASN
- —
- IPv6
- Supported
- HTTP
- HTTP/2
Show DNS record values
- A
- 151.101.193.242, 151.101.129.242, 151.101.1.242, 151.101.65.242
- AAAA
- 2a04:4e42::498, 2a04:4e42:400::498, 2a04:4e42:200::498, 2a04:4e42:600::498
- CNAME
- x.sni.global.fastly.net
TXT record contents are not republished; only their count is shown.
Security
stack.com serves a certificate that fails verification (hostname mismatch) and sets 4 of 6 recommended security headers.
Security headers4 of 6 set
- HSTSForces HTTPS
- CSPBlocks injected scripts
- X-Frame-OptionsStops clickjacking
- X-Content-TypeStops MIME sniffing
- Referrer-PolicyLimits URL leakage
- Permissions-PolicyRestricts browser features
TLS certificate
- Names covered
- 2
- Cookies set
- 1
Email security
stack.com scores F for email security, with SPF and DMARC policy “none”.
- SPFWeak
Marks unlisted senders as suspicious (~all) but does not reject them.
- DMARCWeak
Monitoring only: forged mail is still delivered.
- MTA-STSNot set
Not published; mail to this domain can be downgraded to plaintext.
- BIMINot set
Not published (optional).
Mail services authorised in SPF: Google Workspace
Performance & carbon
stack.com scores 90/100 for performance, with an estimated load time of 1.0 s. A visit emits an estimated 0.30 g of CO2 (grade B).
Page weight
- HTML 526 KB
- JavaScript 158 KB
- CSS 134 KB
- Est. load
- 998 ms
- Response
- 988 ms
- Scripts / CSS
- 26 / 1
Carbon per visitB
0.30 g CO2 per uncached view
Estimate from the Sustainable Web Design model. HTML, JavaScript and CSS only; images, video and fonts are not measured. Treat it as a lower bound for comparing pages, not an audit.
SEO & accessibility
stack.com scores 85/100 for SEO and 100/100 for accessibility, with 3 SEO issues to fix.
Heading structure
One H1: good.
Image alt text
79 images · 0 without alt text · 68 lazy-loaded
Links
- Internal 117
- External 9
SEO issues3
- Title longer than 60 characters
- Meta description longer than 160 characters
- sitemap.xml not found
Accessibility issues0
No accessibility issues detected.
Technical details
Page metadata, social tags, crawl files and scan information.
Meta tags
- Title
- Most Reliable App & Cross Browser Testing Platform | BrowserStack
- Description
- Instant access to 3500+ browsers and real iOS and Android devices for cross browser testing. Ship apps and websites that work for everyone, every time. Get Free Trial.
- Canonical
- https://www.browserstack.com
- Language
- en-US
- Robots meta
- index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
Crawl files
- robots.txt
- Found
- Disallow rules
- 32
- sitemap.xml
- Not found
- URLs in sitemap
- 0
Structured data
- Microdata items
- 0
- RDFa items
- 0
Scan
- Final URL
- https://www.browserstack.com/
- HTTP status
- 200
- Redirects
- https://stack.com → https://www.browserstack.com/
- Scanned
- Aug 24, 2026, 1:22 PM
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Frequently asked questions about stack.com
- What is stack.com?
- browserstack.com is a website. It describes itself as “Instant access to 3500+ browsers and real iOS and Android devices for cross browser testing”. The site runs on WordPress, delivered through Fastly. It is also on X, Facebook and LinkedIn.
- What technology does stack.com use?
- stack.com is built with WordPress and Nginx.
- Who hosts stack.com?
- stack.com is delivered through Fastly.
- Is stack.com secure?
- stack.com serves a certificate that fails verification (hostname mismatch) and sets 4 of 6 recommended security headers.
- Is stack.com protected against email spoofing?
- stack.com scores F for email security, with SPF and DMARC policy “none”.
- How does stack.com compare with similar sites?
- stack.com scores higher overall than 18% of the 25,253 WordPress sites we have scanned.
- What is stack.com's overall score?
- stack.com has an overall SiteGraph score of 79/100, combining SEO (85), performance (90), security (45) and accessibility (100).
Open Graph & Twitter