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support.mozilla.org

Client Challenge

Last scanned Jul 23, 2026, 12:53 PM

76

Overall score

Fair

Summary

This website is hosted on Fastly. SEO is fair (55/100) and accessibility is excellent (90/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing meta description.

United States
Hosted on Fastly

Top issues to fix

11 issues found · 4 high priority

  • Missing Strict-Transport-Security header

    Security

    Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Missing meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • 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.

+5 more issues — details in the sections below.

55

SEO

6 issue(s) found

100

Performance

27 ms

65

Security

HTTPS & header checks

90

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://support.mozilla.org/contact

Meta tags

Title
Client Challenge
Description
Canonical
Language
en
Charset
Viewport
width=device-width, initial-scale=1
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

Hosting & CDN

Hosting provider
Fastly
CDN provider
Fastly
IP address
151.101.65.91
ASN
AS54113 (FASTLY - Fastly, Inc., US)

DNS records

TypeValue
A
  • 151.101.65.91
  • 151.101.193.91
  • 151.101.129.91
  • 151.101.1.91
AAAA
  • 2a04:4e42:200::347
  • 2a04:4e42::347
  • 2a04:4e42:600::347
  • 2a04:4e42:400::347
MX—
TXT—
NS—
CAA—
CNAME
  • mozilla.map.fastly.net
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
support.mozilla.org
Valid from
Jun 3, 2026
Valid to
Sep 1, 2026
Days until expiry
39
SAN domains
support.mozilla.org

Security headers

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

Compression: none · 1 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

0 internal · 0 external · 0 broken

Images

4 total · 0 missing alt

Scripts / Styles

3 scripts · 1 stylesheets

JS / CSS size

1.3 KB · 179 B

Page size

3.0 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
646
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

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

Accessibility issues

  • No H1 heading found

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://support.mozilla.org
Final URL
https://support.mozilla.org
HTTP status
200
HTTP version
HTTP/2
Response time
27 ms
HTML size
3.0 KB
Redirect chain
https://support.mozilla.org

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does support.mozilla.org use?
We did not detect any specific technologies for support.mozilla.org in the latest scan.
Is support.mozilla.org secure (HTTPS)?
Yes. support.mozilla.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 1, 2026.
Who hosts support.mozilla.org?
support.mozilla.org is hosted on Fastly, behind Fastly CDN.
What is support.mozilla.org's SEO score?
support.mozilla.org scored 55/100 for SEO in the latest analysis (fair).
What is support.mozilla.org's overall website score?
support.mozilla.org has an overall SiteGraph score of 76/100, combining SEO, performance, security, and accessibility.
Is support.mozilla.org hiring?
support.mozilla.org has a careers page; check it directly for current openings.