What technology does feishu.cn use?

We did not detect any specific technologies for feishu.cn in the latest scan.

Is feishu.cn secure (HTTPS)?

Yes. feishu.cn uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Oct 20, 2026.

Hosting provider information for feishu.cn is not available yet.

What is feishu.cn's SEO score?

feishu.cn scored 65/100 for SEO in the latest analysis (fair).

What is feishu.cn's overall website score?

feishu.cn has an overall SiteGraph score of 61/100, combining SEO, performance, security, and accessibility.

feishu.cn

Lark | Productivity Superapp for Chat, Meetings, Docs & Projects

Last scanned Jul 21, 2026, 11:37 AM · 1 view

Overall score

Fair

Top issues to fix

11 issues found · 4 high priority

Missing Strict-Transport-Security header
Security
Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
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.
Slow estimated load (5.5s)
Performance
Use a CDN, enable caching/compression, and cut render-blocking assets — every extra second costs conversions.
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.

+5 more issues — details in the sections below.

Summary

Lark is a productivity superapp for teams. SEO is fair (65/100) and accessibility is excellent (90/100). Security scores fair (65/100) and performance poor (30/100). Top issue: Title longer than 60 characters.

SEO

5 issue(s) found

Performance

5.47 s

Security

HTTPS & header checks

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.

Meta tags

Title: Lark | Productivity Superapp for Chat, Meetings, Docs & Projects
Description: Lark is a productivity superapp for teams. Get chat, docs, meetings, workflow automations & AI for free all in one place.
Canonical: https://www.larksuite.com/en_sg/__canonical_herf_placeholder__
Language: en
Charset: utf-8
Viewport: initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, width=device-width
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: 49.44.50.16
ASN: —

DNS records

Type	Value
A	49.44.50.16 49.44.50.19
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: DigiCert Inc
Subject: *.larksuite.com
Valid from: Sep 19, 2025
Valid to: Oct 20, 2026
Days until expiry: 91
SAN domains: *.larksuite.com, larksuite.com

Security headers

Strict-Transport-SecurityMissing
Content-Security-PolicyMissing
X-Frame-OptionsMissing
X-Content-Type-OptionsMissing
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

0 internal · 0 external · 0 broken

Images

0 total · 0 missing alt

Scripts / Styles

20 scripts · 1 stylesheets

JS / CSS size

18.6 MB · 4.5 MB

Page size

394 KB

Robots.txt & Sitemap

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

SEO issues

Title longer than 60 characters
No H1 heading found
No structured data (JSON-LD) found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://feishu.cn
Final URL: https://www.larksuite.com/en_sg/?from_site=feishu
HTTP status: 200
HTTP version: HTTP/2
Response time: 5.46 s
HTML size: 394 KB
Redirect chain: https://feishu.cn → https://www.feishu.cn/ → https://www.larksuite.com/en_us/?from_site=feishu → https://www.larksuite.com/en_sg/?from_site=feishu

Frequently asked questions

What technology does feishu.cn use?: We did not detect any specific technologies for feishu.cn in the latest scan.
Is feishu.cn secure (HTTPS)?: Yes. feishu.cn uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Oct 20, 2026.
Who hosts feishu.cn?: Hosting provider information for feishu.cn is not available yet.
What is feishu.cn's SEO score?: feishu.cn scored 65/100 for SEO in the latest analysis (fair).
What is feishu.cn's overall website score?: feishu.cn has an overall SiteGraph score of 61/100, combining SEO, performance, security, and accessibility.