HTTP Headers Analysis for https://linkinstant.jp

Detected Technologies from Headers

See all in URL Inspect 3

Cloudflare NEL Monitoring

Cloudflare CDN

Google Fonts

HTTP Security Headers

Status

Strict-Transport-Security

Missing

Not configured

Content-Security-Policy

Missing

Not configured Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Missing

Not configured

X-Content-Type-Options

Good

nosniff

Referrer-Policy

Good

strict-origin-when-cross-origin

Permissions-Policy

Missing

Not configured

Recommendations

• Add Strict-Transport-Security header with max-age of at least 1 year
• Add Content-Security-Policy header to prevent XSS attacks
• Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
• Consider adding Permissions-Policy to control browser features

Performance Headers

Connection

Performance

close

Transfer-Encoding

Performance

chunked

connection: close
transfer-encoding: chunked

Caching Headers

Cache-Control

Caching

public, max-age=0, must-revalidate

cache-control: public, max-age=0, must-revalidate

Content Headers

Content-Type

Content

text/html; charset=utf-8

content-type: text/html; charset=utf-8

Server Headers

Server

cloudflare

server: cloudflare

CORS Headers

Access-Control-Allow-Origin

Cors

*

access-control-allow-origin: *

Cookies Headers

No cookies headers found

Other Headers

Alt-Svc

Other

h3=":443"; ma=86400

Cf-Cache-Status

Other

DYNAMIC

Cf-Ray

Other

9fc5394d6c8c0614-IAD

Date

Other

Fri, 15 May 2026 21:26:56 GMT

Link

Other

URL

https://fonts.googleapis.com

rel=preconnect

URL

https://fonts.googleapis.com/css2?family=Noto+Serif+TC:wght@400;500&family=Noto+Sans+TC:wght@400;500&family=Noto+Serif+JP:wght@400;500&family=Noto+Sans+JP:wght@400;500&family=Inter:wght@400;500&display=swap

rel=preload as=style

Nel

Other

Report-To Group cf-nel max-age: 1w

success: 0.0%

Report-To

Other

Group cf-nel max-age: 1w

Endpoint 1 https://a.nel.cloudflare.com/report/v4?s=L7OPWzQaWWDuQOzQprHlAIvpmryRHG4NUHobkitRR1%2BDFL5zvFxAEQmdmBQgiGHCRZSZRgn92FNng9Pt9tnCavzBh9uuCE6St4FpaWYktlY6g9nzhiy%2Fd3sbebq0Sy1k4w%3D%3D

Server-Timing

Other

cfCacheStatus;desc="DYNAMIC", cfEdge;dur=19,cfOrigin;dur=67

alt-svc: h3=":443"; ma=86400
cf-cache-status: DYNAMIC
cf-ray: 9fc5394d6c8c0614-IAD
date: Fri, 15 May 2026 21:26:56 GMT
link: <https://fonts.googleapis.com>; rel="preconnect", <https://fonts.googleapis.com/css2?family=Noto+Serif+TC:wght@400;500&amp;family=Noto+Sans+TC:wght@400;500&amp;family=Noto+Serif+JP:wght@400;500&amp;family=Noto+Sans+JP:wght@400;500&amp;family=Inter:wght@400;500&amp;display=swap>; rel="preload"; as=style
nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
report-to: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=L7OPWzQaWWDuQOzQprHlAIvpmryRHG4NUHobkitRR1%2BDFL5zvFxAEQmdmBQgiGHCRZSZRgn92FNng9Pt9tnCavzBh9uuCE6St4FpaWYktlY6g9nzhiy%2Fd3sbebq0Sy1k4w%3D%3D"}]}
server-timing: cfCacheStatus;desc="DYNAMIC", cfEdge;dur=19,cfOrigin;dur=67

Recommendations

Enable compression (gzip/brotli) to improve performance