HTTP Headers Analysis for https://api.flexmls.com

Detected Technologies from Headers

See all in URL Inspect 3

Adobe Fonts (Typekit)

Cloudflare CDNJS

Varnish

HTTP Security Headers

Status

Strict-Transport-Security

Present

max-age=300

Content-Security-Policy

Missing

Not configured Analyze

Content-Security-Policy-Report-Only

Strong

default-src; style-src; font-src; +1 more Analyze

X-Frame-Options

Good

SAMEORIGIN

X-Content-Type-Options

Good

nosniff

Referrer-Policy

Missing

Not configured

Permissions-Policy

Missing

Not configured

Recommendations

• Increase HSTS max-age to at least 1 year and add includeSubDomains
• Add Content-Security-Policy header to prevent XSS attacks
• 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

Transfer-Encoding

Performance

chunked

Vary

Performance

X-Forwarded-Proto,Accept-Encoding

accept-ranges: bytes
connection: close
transfer-encoding: chunked
vary: X-Forwarded-Proto,Accept-Encoding

Caching Headers

Age

Caching

0

age: 0

Content Headers

Content-Type

Content

text/html; charset=UTF-8

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

Server Headers

No server headers found

CORS Headers

Access-Control-Allow-Origin

Cors

https://sparkapi.io

access-control-allow-origin: https://sparkapi.io

Cookies Headers

No cookies headers found

Other Headers

Date

Other

Wed, 06 May 2026 09:14:15 GMT

Link

Other

URL https://www.sparkapi.io/wp-json/

rel=https://api.w.org/

URL https://www.sparkapi.io/wp-json/wp/v2/pages/6

rel=alternate title=JSON type=application/json

URL https://www.sparkapi.io/

rel=shortlink

Via

Other

1.1 varnish (Varnish/6.0)

X-Cache

Other

MISS

X-Request-Id

Other

69FB0667-3FDEA-A182C53

X-Varnish

Other

319246354

date: Wed, 06 May 2026 09:14:15 GMT
link: <https://www.sparkapi.io/wp-json/>; rel="https://api.w.org/", <https://www.sparkapi.io/wp-json/wp/v2/pages/6>; rel="alternate"; title="JSON"; type="application/json", <https://www.sparkapi.io/>; rel=shortlink
via: 1.1 varnish (Varnish/6.0)
x-cache: MISS
x-request-id: 69FB0667-3FDEA-A182C53
x-varnish: 319246354

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching