checkerframework.org
Registered
Page analyze update date:
2026/05/31 07:59:50
Last whois update date:
2026/07/29 17:04:05
Domain Status
Registered
Paid till
31.07.2026
Available from
30.08.2026
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![Fullscreen website screenshot]()
checkerframework.org Website screenshot
Domain Backup
Screenshot of the main page of checkerframework.org, taken on 29.07.2026
3.59 MB
Archive Size
594
Files in Archive
29.07.2026
Creation Date
HTML, CSS, JS, Images
File Types
SEO Score
50%
73
Score achieved
146
Maximum score
Main Information
Title: The Checker Framework
Description: empty
Keywords: empty
Page Encoding:
utf-8
Page Filesize: 7 KB
Server Information
IP: 128.208.3.117
Location: United States,US,Seattle,98115,47.6859,-122.2994,America/Los_Angeles
Http Server: apache/2.4.62 (rocky linux) op
Encoding: utf-8
Meta Tags List
- charset: utf-8
Internal Links
External Links
Whois Information
domain_name: checkerframework.org
update_date: 2026-05-19T15:10:29.942Z
update_time: 1779203429
creation_date: 2013-07-31T17:03:36.68Z
creation_time: 1375290216
expiration_date: 2026-07-31T17:03:36.68Z
Whois Raw Data
Domain Name: CHECKERFRAMEWORK.ORG
Registrar: 1API GmbH
Domain Status: client transfer prohibited
Registry Expiry Date: 2026-07-31T17:03:36.68Z
Creation Date: 2013-07-31T17:03:36.68Z
Updated Date: 2026-05-19T15:10:29.942Z
Name Server: DNS2.IWANTMYNAME.COM
Name Server: DNS1.IWANTMYNAME.COM
Name Server: DNS3.IWANTMYNAME.COM
REGISTRAR Contact: 1API GmbH
>>> Last update of RDAP database: 2026-07-29T17:04:05Z
SEO Audit
Technical SEO
✓
Response Code
200
Status 200 OK - page loads correctly.
✓
Character Encoding
Page: utf-8, Header: utf-8
Character encoding consistent between HTML and headers.
✓
Page Size
8108 bytes
Page size acceptable for fast loading.
✓
Resources
2 total
Optimal number of resources.
✓
Hreflang Tags
0 hreflang tags
Add hreflang tags if you have multilingual content.
!
Robots.txt
Missing
Add robots.txt file to control search engine crawling.
!
Sitemap
Not found
Add sitemap.xml and reference it in robots.txt.
✓
HTTPS
Yes
Secure HTTPS connection enabled.
!
Compression
Not detected
Enable gzip or zstd compression to reduce file sizes.
!
Caching
Not set
Add cache-control headers to improve loading speed for returning visitors.
✓
Page Speed
4.89 ms
Excellent loading speed.
On-Page SEO
!
Title
The Checker Framework
Title too short. Expand to 30-60 characters for better SEO.
!
Meta Description
empty Lenght:5
Meta description too short. Expand to 100-160 characters.
✓
H1 Heading
1 found - "The Checker Framework"
Good - single H1 heading found.
!
Word Count
492
Content somewhat short. Expand to 500+ words for optimal SEO.
!
Canonical Tag
Add canonical tag to prevent duplicate content issues.
✓
Duplicate Meta
[]
No duplicate meta tags found.
✓
Keywords
empty
Meta keywords set (note: not used by major search engines).
Content and UX
✓
Language
en
Language attribute properly set.
✓
Images
1 total, 0 missing ALT
All images have proper ALT text.
!
Viewport
Add viewport meta tag for mobile responsiveness.
!
Open Graph
Missing: og:title, og:description, og:image, og:url
Add missing OpenGraph tags for social media sharing: og:title, og:description, og:image, og:url
!
Structured Data
0 JSON-LD scripts
Add structured data (JSON-LD) for rich snippets and better SEO.