HTTP Headers Analysis for https://cz.pycon.org

Detected Technologies from Headers

See all in URL Inspect 1

Fly.io

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

Accept-Ranges

Performance

bytes

Connection

Performance

close

accept-ranges: bytes
connection: close

Caching Headers

Cache-Control

Caching

max-age=60, no-cache

Etag

Caching

"6a1d8b34-1c67"

Expires

Caching

Wed, 05 Aug 2026 16:09:14 GMT

Last-Modified

Caching

Mon, 01 Jun 2026 13:37:56 GMT

cache-control: max-age=60, no-cache
etag: "6a1d8b34-1c67"
expires: Wed, 05 Aug 2026 16:09:14 GMT
last-modified: Mon, 01 Jun 2026 13:37:56 GMT

Content Headers

Content-Length

Content

7271

Content-Type

Content

text/html

content-length: 7271
content-type: text/html

Server Headers

Server

Fly/2fa70e089 (2026-08-03)

server: Fly/2fa70e089 (2026-08-03)

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Date

Other

Wed, 05 Aug 2026 16:08:14 GMT

Fly-Request-Id

Other

01KZ9AXET5T04B2ZS9GWM9K75P-iad

Via

Other

1.1 fly.io, 1.1 fly.io

date: Wed, 05 Aug 2026 16:08:14 GMT
fly-request-id: 01KZ9AXET5T04B2ZS9GWM9K75P-iad
via: 1.1 fly.io, 1.1 fly.io

Recommendations

Enable compression (gzip/brotli) to improve performance