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SGSiteGraph

open-vsx.org

Open VSX Registry

Last scanned Aug 5, 2026, 10:00 AM · 12 views

87

Overall score

Great

Summary

Open VSX is an Eclipse open-source project and alternative to the Visual Studio Marketplace. This website is hosted on Fastly. SEO is good (75/100) and accessibility is excellent (90/100). Security scores good (85/100) and performance excellent (100/100). Top issue: Missing canonical link.

Open VSX is an Eclipse open-source project and alternative to the Visual Studio Marketplace. It is deployed by the Eclipse Foundation at open-vsx.org.

United States
Hosted on Fastly

Top issues to fix

4 issues found · 2 high priority

  • TLS certificate expires in 12 days

    Security

    Renew now (or enable auto-renewal) — an expired certificate blocks visitors with a full-page browser warning.

  • 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 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.

75

SEO

3 issue(s) found

100

Performance

4 ms

85

Security

HTTPS & header checks

90

Accessibility

1 issue(s) found

Score history

-4 overall since Jul 26, 2026

Overall
87
SEO
75
Security
85
Performance
100
Accessibility
90

Organization

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

Open VSX is an Eclipse open-source project and alternative to the Visual Studio Marketplace. It is deployed by the Eclipse Foundation at open-vsx.org.

LinkedInX (Twitter)

Contact

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

Source: https://open-vsx.org/extension/redhat/java

Meta tags

Title
Open VSX Registry
Description
Open VSX is an Eclipse open-source project and alternative to the Visual Studio Marketplace. It is deployed by the Eclipse Foundation at open-vsx.org.
Canonical
Language
en
Charset
UTF-8
Viewport
width=device-width, initial-scale=1
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Open VSX Registry
og:description
Open VSX is an Eclipse open-source project and alternative to the Visual Studio Marketplace. It is deployed by the Eclipse Foundation at open-vsx.org.
og:type
website
og:url
https://open-vsx.org

Twitter Card

twitter:card
summary_large_image
twitter:title
Open VSX Registry
twitter:description
Open VSX is an Eclipse open-source project and alternative to the Visual Studio Marketplace. It is deployed by the Eclipse Foundation at open-vsx.org.

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

Hosting & CDN

Hosting provider
Fastly
CDN provider
Fastly
IP address
151.101.1.242
ASN
AS54113 (FASTLY - Fastly, Inc., US)

DNS records

TypeValue
A
  • 151.101.1.242
  • 151.101.65.242
  • 151.101.193.242
  • 151.101.129.242
AAAA—
MX
  • mail.eclipse.org
TXT
  • v=spf1 a:mail.eclipse.org mx -all
  • _yd0qtjemsx3qf79okf5br42q5rxxyu7
NS
  • ns-761.awsdns-31.net
  • ns-1714.awsdns-22.co.uk
  • ns-361.awsdns-45.com
  • ns-1147.awsdns-15.org
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Certainly
Subject
open-vsx.org
Valid from
Jul 18, 2026
Valid to
Aug 17, 2026
Days until expiry
12
SAN domains
open-vsx.org

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyEnabled
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

11 internal · 7 external · 0 broken

Images

10 total · 0 missing alt

Scripts / Styles

4 scripts · 2 stylesheets

JS / CSS size

447 KB · 23.5 KB

Page size

20.0 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
1
sitemap.xml
Found
URLs in sitemap
16332

SEO issues

  • Missing canonical link
  • No H1 heading found
  • No structured data (JSON-LD) found

Accessibility issues

  • No H1 heading found

Scan details

Requested URL
https://open-vsx.org
Final URL
https://open-vsx.org
HTTP status
200
HTTP version
HTTP/2
Response time
4 ms
HTML size
20.0 KB
Redirect chain
https://open-vsx.org

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Frequently asked questions

What technology does open-vsx.org use?
We did not detect any specific technologies for open-vsx.org in the latest scan.
Is open-vsx.org secure (HTTPS)?
Yes. open-vsx.org uses TLS 1.3 with a certificate issued by Certainly, valid until Aug 17, 2026.
Who hosts open-vsx.org?
open-vsx.org is hosted on Fastly, behind Fastly CDN.
What is open-vsx.org's SEO score?
open-vsx.org scored 75/100 for SEO in the latest analysis (fair).
What is open-vsx.org's overall website score?
open-vsx.org has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.
Has open-vsx.org's score changed over time?
open-vsx.org's overall score has declined by 4 points (from 91 to 87) since Jul 26, 2026.