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pjrc.com

PJRC: Electronic Projects

Last scanned Jul 26, 2026, 5:47 AM · 1 view

69

Overall score

Fair

Summary

This website uses WordPress hosted on HVC-AS - HIVELOCITY, Inc., US. SEO is fair (60/100) and accessibility is excellent (100/100). Security scores poor (35/100) and performance excellent (90/100). Top issue: Missing meta description.

United States
Hosted on HVC-AS - HIVELOCITY, Inc., US

Top issues to fix

9 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.

  • Missing meta description

    SEO

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

  • 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.

  • Multiple H1 headings found

    SEO

    Keep a single H1 per page and demote the others to H2/H3.

+3 more issues — details in the sections below.

60

SEO

6 issue(s) found

90

Performance

2.56 s

35

Security

HTTPS & header checks

100

Accessibility

0 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.

Organization

Company details published in this site's own structured data.

Facebook

Contact

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

Meta tags

Title
PJRC: Electronic Projects
Description
Canonical
Language
en-US
Charset
UTF-8
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.

WordPressApache

Hosting & CDN

CDN provider
—
IP address
162.254.150.250
ASN
AS29802 (HVC-AS - HIVELOCITY, Inc., US)

DNS records

TypeValue
A
  • 162.254.150.250
AAAA—
MX
  • mail.pjrc.com
TXT
  • v=spf1 a:pjrc.com a:forum.pjrc.com a:mail.pjrc.com a:wallace.pjrc.com -all
NS
  • ns1.pjrc.com
  • ns2.pjrc.com
CAA
  • 0 issue "comodoca.com"
  • 0 issue "letsencrypt.org"
CNAME
  • pjrc.com
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
www.pjrc.com
Valid from
Jun 19, 2026
Valid to
Sep 17, 2026
Days until expiry
50
SAN domains
www.pjrc.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 3 · H2 14 · H3 0

Links

26 internal · 13 external · 0 broken

Images

20 total · 2 missing alt

Scripts / Styles

0 scripts · 1 stylesheets

JS / CSS size

0 B · 3.0 KB

Page size

19.4 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
27
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

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

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://pjrc.com
Final URL
https://www.pjrc.com/
HTTP status
200
HTTP version
HTTP/1.1
Response time
2.56 s
HTML size
19.4 KB
Redirect chain
https://pjrc.com → https://www.pjrc.com/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does pjrc.com use?
pjrc.com is built with WordPress, Apache.
Is pjrc.com secure (HTTPS)?
Yes. pjrc.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 17, 2026.
Who hosts pjrc.com?
pjrc.com is hosted on HVC-AS - HIVELOCITY, Inc., US.
What is pjrc.com's SEO score?
pjrc.com scored 60/100 for SEO in the latest analysis (fair).
What is pjrc.com's overall website score?
pjrc.com has an overall SiteGraph score of 69/100, combining SEO, performance, security, and accessibility.