HTTP Headers Analysis for https://webpack.js.org

Detected Technologies from Headers

See all in URL Inspect 5

Cloudflare NEL Monitoring

Cloudflare CDN

Fastly

GitHub Active incidents

Varnish

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

Missing

Not configured

Referrer-Policy

Missing

Not configured

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
• Add X-Content-Type-Options: nosniff
• Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
• Consider adding Permissions-Policy to control browser features

Performance Headers

Connection

Performance

close

Transfer-Encoding

Performance

chunked

Vary

Performance

Accept-Encoding

connection: close
transfer-encoding: chunked
vary: Accept-Encoding

Caching Headers

Age

Caching

194

Cache-Control

Caching

max-age=600

Etag

Caching

W/"69f1506a-c227"

Expires

Caching

Wed, 29 Apr 2026 13:11:17 GMT

Last-Modified

Caching

Wed, 29 Apr 2026 00:27:22 GMT

age: 194
cache-control: max-age=600
etag: W/"69f1506a-c227"
expires: Wed, 29 Apr 2026 13:11:17 GMT
last-modified: Wed, 29 Apr 2026 00:27:22 GMT

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

Cf-Cache-Status

Other

DYNAMIC

Cf-Ray

Other

9f3ff1a3bdde2e74-EWR

Date

Other

Wed, 29 Apr 2026 17:14:35 GMT

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=S7195TB3fUrWtAc34iwMj65Nh3ai9rAzF8R51HkujYEgJNMWtdgshCJkJPdX6CpK9sL758wMQOvRkeHH1PYQx7QluALJiN1%2FOdY92hNlwk39IpoVHBWTvYcQkF00m%2F7w

Via

Other

1.1 varnish

X-Cache

Other

HIT

X-Cache-Hits

Other

0

X-Fastly-Request-Id

Other

1607b4b2a98aa01ec43da43e2ede0510c3fc277b

X-Github-Request-Id

Other

09B8:2B579F:7BD947C:8752979:69F2011C

X-Origin-Cache

Other

HIT

X-Proxy-Cache

Other

MISS

X-Served-By

Other

cache-lga21967-LGA

X-Timer

Other

S1777482875.482120,VS0,VE1

cf-cache-status: DYNAMIC
cf-ray: 9f3ff1a3bdde2e74-EWR
date: Wed, 29 Apr 2026 17:14:35 GMT
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=S7195TB3fUrWtAc34iwMj65Nh3ai9rAzF8R51HkujYEgJNMWtdgshCJkJPdX6CpK9sL758wMQOvRkeHH1PYQx7QluALJiN1%2FOdY92hNlwk39IpoVHBWTvYcQkF00m%2F7w"}]}
via: 1.1 varnish
x-cache: HIT
x-cache-hits: 0
x-fastly-request-id: 1607b4b2a98aa01ec43da43e2ede0510c3fc277b
x-github-request-id: 09B8:2B579F:7BD947C:8752979:69F2011C
x-origin-cache: HIT
x-proxy-cache: MISS
x-served-by: cache-lga21967-LGA
x-timer: S1777482875.482120,VS0,VE1

Recommendations

Enable compression (gzip/brotli) to improve performance