额外信息 针对 https://911tabs.com
Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 88.99.117.130 |
| Server Software | nginx |
| Compression | gzip |
|
🔒 🟡 Mixed Content (3 HTTP resources) | The page is served over HTTPS but loads 3 resource(s) over HTTP. This may be blocked in modern browsers. |
|
ℹ 🔵 Missing HSTS | HTTP Strict Transport Security is not configured. Recommended for HTTPS sites. |
|
ℹ 🔵 Missing Content Security Policy | CSP is not configured. It helps prevent XSS attacks and content injection. |
|
ℹ 🔵 Missing X-Frame-Options | The site can be embedded in iframes by third parties (clickjacking risk). |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 88.99.117.130
Server Software nginx
Compression gzip
🔒 🟡 Mixed Content (3 HTTP resources) The page is served over HTTPS but loads 3 resource(s) over HTTP. This may be blocked in modern browsers.
ℹ 🔵 Missing HSTS HTTP Strict Transport Security is not configured. Recommended for HTTPS sites.
ℹ 🔵 Missing Content Security Policy CSP is not configured. It helps prevent XSS attacks and content injection.
ℹ 🔵 Missing X-Frame-Options The site can be embedded in iframes by third parties (clickjacking risk).
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | https://911tabs.com:443 | 301 | HTTP/2 301 |
| 2 | https://www.911tabs.com/ | 200 | HTTP/2 200 |
#1 URL https://911tabs.com:443
HTTP Status Code 301
Status HTTP/2 301
#2 URL https://www.911tabs.com/
HTTP Status Code 200
Status HTTP/2 200
Performance
| DNS Lookup | 203.7 ms |
| TCP Connect | 217.2 ms |
| TLS Handshake | 31.2 ms |
| Time To First Byte (TTFB) | 267 ms |
| Content Download | 0.2 ms |
| Total Response Time | 267.2 ms |
DNS Lookup 203.7 ms
TCP Connect 217.2 ms
TLS Handshake 31.2 ms
Time To First Byte (TTFB) 267 ms
Content Download 0.2 ms
Total Response Time 267.2 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✘ Not configured |
| CSP | ⚠ Not configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ⚠ Not configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✘ Not configured
CSP ⚠ Not configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ⚠ Not configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | 911Tabs - tabs search engine // Over 4 million tabs in index:guitar,bass,drum,piano,guitar pro,power and sheet music! |
| Meta Description | 911Tabs - Tablature search engine. Over 4,600,000 tabs indexed: guitar tabs, bass tabs, chords, drum tabs, paino chords, piano tabs, guitar pro tabs, and power tabs |
| Canonical | http://www.911tabs.com/ |
Title 911Tabs - tabs search engine // Over 4 million tabs in index:guitar,bass,drum,piano,guitar pro,power and sheet music!
Meta Description 911Tabs - Tablature search engine. Over 4,600,000 tabs indexed: guitar tabs, bass tabs, chords, drum tabs, paino chords, piano tabs, guitar pro tabs, and power tabs
Canonical http://www.911tabs.com/
Detected Technologies
| Technology | jQuery Google Analytics Nginx PHP |
Technology jQuery Google Analytics Nginx PHP
HTTP Headers
| Server
| nginx |
| Date
| Mon, 24 Aug 2026 21:01:48 GMT |
| Content-type
| text/html; charset=UTF-8 |
| Vary
| User-Agent |
| Content-encoding
| gzip |
Meta Tags
| Content-Type | text/html |
| Description | 911Tabs - Tablature search engine. Over 4,600,000 tabs indexed: guitar tabs, bass tabs, chords, drum tabs, paino chords, piano tabs, guitar pro tabs, and power tabs |
| Keywords | 911tabs, tabs, tablature, search, guitar tabs, bass tabs, guitar pro tabs, chords, drum tabs, piano chords, piano tabs |
| X-UA-Compatible | IE=edge |
| Viewport | width=device-width, initial-scale=1, user-scalable=1 |
Server nginx
Date Mon, 24 Aug 2026 21:01:48 GMT
Content-type text/html; charset=UTF-8
Vary User-Agent
Content-encoding gzip
Content-Type text/html
Description 911Tabs - Tablature search engine. Over 4,600,000 tabs indexed: guitar tabs, bass tabs, chords, drum tabs, paino chords, piano tabs, guitar pro tabs, and power tabs
Keywords 911tabs, tabs, tablature, search, guitar tabs, bass tabs, guitar pro tabs, chords, drum tabs, piano chords, piano tabs
X-UA-Compatible IE=edge
Viewport width=device-width, initial-scale=1, user-scalable=1
