What technology does caniuse.com use?

caniuse.com is built with Google Analytics, Google Ads, Nginx.

Is caniuse.com secure (HTTPS)?

Yes. caniuse.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 17, 2026.

Who hosts caniuse.com?

caniuse.com is hosted on INMOTION - InMotion Hosting, Inc., US.

What is caniuse.com's SEO score?

caniuse.com scored 65/100 for SEO in the latest analysis (fair).

What is caniuse.com's overall website score?

caniuse.com has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.

What products does caniuse.com offer?

caniuse.com offers Can I use....

Is caniuse.com hiring?

caniuse.com has a careers page; check it directly for current openings.

caniuse.com

Can I use... Support tables for HTML5, CSS3, etc

Last scanned Jul 21, 2026, 11:37 AM

Overall score

Great

Top issues to fix

8 issues found · 2 high priority

Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEO
Add 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
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

+2 more issues — details in the sections below.

Summary

"Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers. This website uses Nginx hosted on INMOTION - InMotion Hosting, Inc., US. SEO is fair (65/100) and accessibility is excellent (90/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Missing canonical link.

SEO

5 issue(s) found

100

Performance

243 ms

Security

HTTPS & header checks

Accessibility

1 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Contact

Email, phone, and address published on this site's own pages.

Source: https://caniuse.com/contact

Meta tags

Title: Can I use... Support tables for HTML5, CSS3, etc
Description: "Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers.
Canonical
Language: en-US
Charset: utf-8
Viewport: width=device-width
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

Google Analytics Google Ads Nginx

Hosting & CDN

Hosting provider: INMOTION - InMotion Hosting, Inc., US
CDN provider: —
IP address: 199.250.214.41
ASN: AS22611 (INMOTION - InMotion Hosting, Inc., US)

DNS records

Type	Value
A	199.250.214.41
AAAA	—
MX	caniuse.com
TXT	v=spf1 +a +mx +ip4:199.250.214.41 -all
NS	ns1.inmotionhosting.com ns2.inmotionhosting.com
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Let's Encrypt
Subject: *.caniuse.com
Valid from: Jul 19, 2026
Valid to: Oct 17, 2026
Days until expiry: 87
SAN domains: *.caniuse.com, caniuse.com

Security headers

Strict-Transport-SecurityEnabled
Content-Security-PolicyMissing
X-Frame-OptionsMissing
X-Content-Type-OptionsMissing
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 1 · H3 4

Links

17 internal · 25 external · 0 broken

Images

3 total · 0 missing alt

Scripts / Styles

8 scripts · 5 stylesheets

JS / CSS size

655 KB · 41.1 KB

Page size

19.3 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Missing canonical link
No H1 heading found
No structured data (JSON-LD) found
Missing OpenGraph tags
sitemap.xml not found

Products & pricing

Product and pricing information published in this site's own structured data.

Can I use...

$1/mo USD

Careers

View careers page

This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.

Scan details

Requested URL: https://caniuse.com
Final URL: https://caniuse.com
HTTP status: 200
HTTP version: HTTP/2
Response time: 243 ms
HTML size: 19.3 KB
Redirect chain: https://caniuse.com

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Frequently asked questions

What technology does caniuse.com use?: caniuse.com is built with Google Analytics, Google Ads, Nginx.
Is caniuse.com secure (HTTPS)?: Yes. caniuse.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 17, 2026.
Who hosts caniuse.com?: caniuse.com is hosted on INMOTION - InMotion Hosting, Inc., US.
What is caniuse.com's SEO score?: caniuse.com scored 65/100 for SEO in the latest analysis (fair).
What is caniuse.com's overall website score?: caniuse.com has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.
What products does caniuse.com offer?: caniuse.com offers Can I use....
Is caniuse.com hiring?: caniuse.com has a careers page; check it directly for current openings.