Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 23.185.0.3 |
| Server Software | nginx |
| CDN | CDN (HIT, HIT, MISS, MISS) |
| Compression | gzip |
|
🔒 🟡 Mixed Content (2 HTTP resources) | The page is served over HTTPS but loads 2 resource(s) over HTTP. This may be blocked in modern browsers. |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 23.185.0.3
Server Software nginx
CDN CDN (HIT, HIT, MISS, MISS)
Compression gzip
🔒 🟡 Mixed Content (2 HTTP resources) The page is served over HTTPS but loads 2 resource(s) over HTTP. This may be blocked in modern browsers.
Performance
| DNS Lookup | 8.2 ms |
| TCP Connect | 9.5 ms |
| TLS Handshake | 7.3 ms |
| Time To First Byte (TTFB) | 29.4 ms |
| Content Download | 2.1 ms |
| Total Response Time | 31.5 ms |
DNS Lookup 8.2 ms
TCP Connect 9.5 ms
TLS Handshake 7.3 ms
Time To First Byte (TTFB) 29.4 ms
Content Download 2.1 ms
Total Response Time 31.5 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=63072000; includeSubDomains; preload |
| CSP | ✔ Configured |
| X-Frame-Options | ✔ SAMEORIGIN |
| X-Content-Type-Options | ✔ nosniff |
| Referrer Policy | strict-origin-when-cross-origin |
| Permissions Policy | ✔ Configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=63072000; includeSubDomains; preload
CSP ✔ Configured
X-Frame-Options ✔ SAMEORIGIN
X-Content-Type-Options ✔ nosniff
Referrer Policy strict-origin-when-cross-origin
Permissions Policy ✔ Configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Tax Foundation | Principled, Insightful, Engaged |
| Meta Description | Tax Foundation is the world's leading independent tax policy nonprofit. We lead the tax reform debate toward smarter simpler policy. |
| Canonical | https://taxfoundation.org/ |
| Robots Meta | index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1 |
| Open Graph Title | Homepage |
| Open Graph Description | Tax Foundation is the world's leading independent tax policy nonprofit. We lead the tax reform debate toward smarter simpler policy. |
| Open Graph Image | https://taxfoundation.org/wp-content/uploads/2023/08/TF23... |
| Twitter Card | summary_large_image |
Title Tax Foundation | Principled, Insightful, Engaged Meta Description Tax Foundation is the world's leading independent tax policy nonprofit. We lead the tax reform debate toward smarter simpler policy. Canonical https://taxfoundation.org/ Robots Meta index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1 Open Graph Title Homepage Open Graph Description Tax Foundation is the world's leading independent tax policy nonprofit. We lead the tax reform debate toward smarter simpler policy. Open Graph Image https://taxfoundation.org/wp-content/uploads/2023/08/TF23... Twitter Card summary_large_image Detected Technologies
| Technology | WordPress jQuery Google Analytics Google Tag Manager Nginx PHP HubSpot |
Technology WordPress jQuery Google Analytics Google Tag Manager Nginx PHP HubSpot
HTTP Headers
| Access-control-allow-headers
| Content-Type, Authorization |
| Access-control-allow-methods
| GET,POST |
| Cache-control
| public, max-age=604800 |
| Content-encoding
| gzip |
| Content-security-policy
| upgrade-insecure-requests |
| Content-type
| text/html; charset=UTF-8 |
| Cross-origin-embedder-policy
| unsafe-none; report-to='default' |
| Cross-origin-embedder-policy-report-only
| unsafe-none; report-to='default' |
| Cross-origin-opener-policy
| unsafe-none |
| Cross-origin-opener-policy-report-only
| unsafe-none; report-to='default' |
| Cross-origin-resource-policy
| cross-origin |
| Permissions-policy
| accelerometer=(), autoplay=(), camera=(), cross-origin-isolated=(), display-capture=(self), encrypted-media=(), fullscreen=*, geolocation=(self), gyroscope=(), keyboard-map=(), magnetometer=(), microphone=(), midi=(), payment=*, picture-in-picture=*, publickey-credentials-get=(), screen-wake-lock=(), sync-xhr=*, usb=(), xr-spatial-tracking=(), gamepad=(), serial=() |
| Referrer-policy
| strict-origin-when-cross-origin |
| Server
| nginx |
| Strict-transport-security
| max-age=63072000; includeSubDomains; preload |
| X-content-security-policy
| default-src 'self'; img-src *; media-src * data:; |
| X-content-type-options
| nosniff |
| X-frame-options
| SAMEORIGIN |
| X-pantheon-styx-hostname
| styx-us-a-7ffbcf568d-5qrhm |
| X-permitted-cross-domain-policies
| none |
| X-styx-req-id
| 7666a8ae-86b2-11f1-8d4e-2e8a9ebdce31 |
| Age
| 3194 |
| Accept-ranges
| bytes |
| Via
| 1.1 varnish, 1.1 varnish, 1.1 varnish, 1.1 varnish |
| Date
| Thu, 23 Jul 2026 17:14:05 GMT |
| X-served-by
| cache-chi-klot8100088-CHI, cache-par-lfpg1960084-PAR, cache-par-lfpg1960085-PAR, cache-par-lfpg1960085-PAR |
| X-cache
| HIT, HIT, MISS, MISS |
| X-cache-hits
| 10, 0, 0, 0 |
| X-timer
| S1784826845.015048,VS0,VE10 |
| Vary
| Accept-Encoding, Cookie, Cookie |
| Content-length
| 56984 |
Meta Tags
| Viewport | width=device-width, initial-scale=1 |
| Robots | index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1 |
| Description | Tax Foundation is the world's leading independent tax policy nonprofit. We lead the tax reform debate toward smarter simpler policy. |
| Article:publisher | https://www.facebook.com/taxfoundation |
| Article:modified_time | 2026-06-08T14:22:10+00:00 |
| Generator | WPML ver:4.8.4 stt:1,4,3,2; |
| Msapplication-TileImage |  |
Access-control-allow-headers Content-Type, Authorization
Access-control-allow-methods GET,POST
Cache-control public, max-age=604800
Content-encoding gzip
Content-security-policy upgrade-insecure-requests
Content-type text/html; charset=UTF-8
Cross-origin-embedder-policy unsafe-none; report-to='default'
Cross-origin-embedder-policy-report-only unsafe-none; report-to='default'
Cross-origin-opener-policy unsafe-none
Cross-origin-opener-policy-report-only unsafe-none; report-to='default'
Cross-origin-resource-policy cross-origin
Permissions-policy accelerometer=(), autoplay=(), camera=(), cross-origin-isolated=(), display-capture=(self), encrypted-media=(), fullscreen=*, geolocation=(self), gyroscope=(), keyboard-map=(), magnetometer=(), microphone=(), midi=(), payment=*, picture-in-picture=*, publickey-credentials-get=(), screen-wake-lock=(), sync-xhr=*, usb=(), xr-spatial-tracking=(), gamepad=(), serial=()
Referrer-policy strict-origin-when-cross-origin
Server nginx
Strict-transport-security max-age=63072000; includeSubDomains; preload
X-content-security-policy default-src 'self'; img-src *; media-src * data:;
X-content-type-options nosniff
X-frame-options SAMEORIGIN
X-pantheon-styx-hostname styx-us-a-7ffbcf568d-5qrhm
X-permitted-cross-domain-policies none
X-styx-req-id 7666a8ae-86b2-11f1-8d4e-2e8a9ebdce31
Age 3194
Accept-ranges bytes
Via 1.1 varnish, 1.1 varnish, 1.1 varnish, 1.1 varnish
Date Thu, 23 Jul 2026 17:14:05 GMT
X-served-by cache-chi-klot8100088-CHI, cache-par-lfpg1960084-PAR, cache-par-lfpg1960085-PAR, cache-par-lfpg1960085-PAR
X-cache HIT, HIT, MISS, MISS
X-cache-hits 10, 0, 0, 0
X-timer S1784826845.015048,VS0,VE10
Vary Accept-Encoding, Cookie, Cookie
Content-length 56984
