Skip to main content
SGSiteGraph

zeromq.org

ZeroMQ

Last scanned Jul 27, 2026, 1:43 PM · 2 views

83

Overall score

Great

Summary

An open-source universal messaging library. This website uses Google Analytics hosted on AWS behind Netlify CDN. SEO is fair (70/100) and accessibility is excellent (90/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Missing canonical link.

An open-source universal messaging library

United States
Hosted on AWS

Top issues to fix

9 issues found · 1 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 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.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

+3 more issues — details in the sections below.

70

SEO

5 issue(s) found

100

Performance

289 ms

75

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.

Organization

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

An open-source universal messaging library

GitHubX (Twitter)

Meta tags

Title
ZeroMQ
Description
An open-source universal messaging library
Canonical
Language
Charset
utf-8
Viewport
initial-scale=1,maximum-scale=1,user-scalable=no
Robots meta
Manifest
https://zeromq.org/site.webmanifest

OpenGraph & Twitter Card

OpenGraph

og:title
ZeroMQ
og:description
An open-source universal messaging library
og:type
—
og:url
https://zeromq.org/

Twitter Card

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

Technologies

Detected frameworks, languages, and tools.

jQueryGoogle Analytics

Hosting & CDN

Hosting provider
AWS
CDN provider
Netlify
IP address
52.74.6.109
ASN
AS16509 (AMAZON-02 - Amazon.com, Inc., US)

DNS records

TypeValue
A
  • 52.74.6.109
  • 13.215.239.219
AAAA—
MX—
TXT—
NS
  • dns4.p07.nsone.net
  • dns1.p07.nsone.net
  • dns2.p07.nsone.net
  • dns3.p07.nsone.net
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
*.zeromq.org
Valid from
Jul 5, 2026
Valid to
Oct 3, 2026
Days until expiry
67
SAN domains
*.zeromq.org, zeromq.org

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 2 · H2 0 · H3 0

Links

5 internal · 5 external · 0 broken

Images

12 total · 0 missing alt

Scripts / Styles

4 scripts · 1 stylesheets

JS / CSS size

86.3 KB · 232 KB

Page size

14.8 KB

Robots.txt & Sitemap

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

SEO issues

  • Missing canonical link
  • Multiple H1 headings found
  • No structured data (JSON-LD) found
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

  • Missing <html lang> attribute

Scan details

Requested URL
https://zeromq.org
Final URL
https://zeromq.org
HTTP status
200
HTTP version
HTTP/2
Response time
289 ms
HTML size
14.8 KB
Redirect chain
https://zeromq.org

See something wrong on this report? Request a correction

Related websites

Same technology stack

complyadvantage.com

ComplyAdvantage | AI-driven fraud & AML risk detection

100
wordpressgoogle-analyticsjquery
Cloudflare· Cloudflare

gentlemansgazette.com

Gentleman's Gazette | Website & Shop For Classic Gentlemen

100
wordpressgoogle-analyticscloudflare-analytics
Cloudflare· Cloudflare

lucerna-chem.ch

Lucerna-Chem AG

100
wordpressapachegoogle-analytics
HOSTPOINT-AS - Hostpoint AG, CH

elogic.it

Dinova - Innovazione Digitale Per le Aziende

100
wordpressmeta-pixelgoogle-analytics
Cloudflare· Cloudflare

quago.io

Home - Quago

100
wordpressnginxgoogle-analytics

owncloud.com

ownCloud - share files and folders, easy and secure

100
wordpressnginxgoogle-analytics
kues-data - KUES DATA GmbH, DE

Same hosting provider

chronoseconds.com

Chronoseconds | Buy & Sell Pre-Owned Luxury Watches

100
wordpressnextjsgoogle-analytics
AWS· Netlify

taronga.org.au

Taronga Conservation Society Australia | Taronga Zoo

100
AWS· Cloudflare

secureauth.com

SecureAuth | Continuous Identity Authority

100
google-analytics
AWS· Cloudflare

highereducation.com

Home - Higher Education

100
wordpressnextjs
AWS· Cloudflare

byside.com

Composable Digital Experience Platform | CoreMedia CMS

100
apachegoogle-analytics
AWS· CloudFront

surveyplanet.com

Free Online Survey Maker | Unlimited Surveys | Surveyplanet

100
google-analyticssvelte
AWS· CloudFront

Frequently asked questions

What technology does zeromq.org use?
zeromq.org is built with jQuery, Google Analytics.
Is zeromq.org secure (HTTPS)?
Yes. zeromq.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 3, 2026.
Who hosts zeromq.org?
zeromq.org is hosted on AWS, behind Netlify CDN.
What is zeromq.org's SEO score?
zeromq.org scored 70/100 for SEO in the latest analysis (fair).
What is zeromq.org's overall website score?
zeromq.org has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.