www.redsunoptical.com
Registered
Page analyze update date:
2026/06/11 10:46:33
Last whois update date:
2026/06/09 03:34:07
Domain Status
Registered
Paid till
24.06.2027
Available from
24.07.2027
×
![Fullscreen website screenshot]()
www.redsunoptical.com Website screenshot
SEO Score
59.59%
87
Score achieved
146
Maximum score
Main Information
Title: Nanjing Redsun Optical Co., Ltd.
Description: unknown
Keywords: unknown
Page Encoding:
utf-8
Page Filesize: 215 KB
Server Information
IP: 47.89.211.230
Location: United States,US,,,34.0544,-118.244,America/Los_Angeles
Http Server: nginx
Encoding: utf-8
Meta Tags List
- name: keywords content:
- name: description content:
- equiv: X-UA-Compatible content: IE=edge
- name: renderer content: webkit
- equiv: Content-Type content: text/html; charset=utf-8
- name: viewport content: width=device-width, initial-scale=1, user-scalable=no
Internal Links
External Links
Whois Information
domain_name: redsunoptical.com
update_date: 2024-01-29T02:34:20Z
update_time: 1706495660
creation_date: 2010-06-24T04:59:45Z
creation_time: 1277355585
expiration_date: 2027-06-24T04:59:45Z
Whois Raw Data
Domain Name: REDSUNOPTICAL.COM
Registrar: Alibaba Cloud Computing (Beijing) Co., Ltd.
Domain Status: active
Creation Date: 2010-06-24T04:59:45Z
Registry Expiry Date: 2027-06-24T04:59:45Z
Updated Date: 2024-01-29T02:34:20Z
Name Server: DNS1.HICHINA.COM
Name Server: DNS2.HICHINA.COM
REGISTRAR Contact: Alibaba Cloud Computing (Beijing) Co., Ltd.
>>> Last update of RDAP database: 2026-06-09T03:34:07Z
Robots.txt
User-agent:* Disallow: /phoenix/ Allow: /phoenix/admin/ext/ Allow: / Sitemap: https://www.redsunoptical.com/sitemap.xml
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
220253 bytes
Page size acceptable for fast loading.
!
Resources
93 total
Too many resources. Optimize and combine files for better performance.
✓
Hreflang Tags
0 hreflang tags
Add hreflang tags if you have multilingual content.
✓
Robots.txt
Exists
Robots.txt file found.
✓
Sitemap
Declared in robots.txt
Sitemap declared in robots.txt.
✓
HTTPS
Yes
Secure HTTPS connection enabled.
✓
Compression
gzip
Gzip or Zstd compression enabled for faster loading.
!
Caching
Not set
Add cache-control headers to improve loading speed for returning visitors.
✓
Page Speed
3.80 ms
Excellent loading speed.
On-Page SEO
✓
Title
Nanjing Redsun Optical Co., Ltd.
Good title length (30-60 characters).
!
Meta Description
Lenght:0
Add a meta description (100-160 characters recommended).
!
H1 Heading
0 found - ""
Add exactly one H1 heading with primary keywords.
!
Word Count
183
Content very short. Aim for at least 500 words for better SEO.
!
Canonical Tag
Add canonical tag to prevent duplicate content issues.
✓
Duplicate Meta
[]
No duplicate meta tags found.
✓
Keywords
Meta keywords are optional (not used by major search engines).
Content and UX
✓
Language
en
Language attribute properly set.
!
Images
30 total, 8 missing ALT
Add ALT text to images for accessibility and SEO.
✓
Viewport
width=device-width, initial-scale=1, user-scalable=no
Viewport meta tag properly set for mobile devices.
!
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.