Checking results for: regex101.com
Additional info for https://regex101.com
Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 78.47.220.195 |
| Server Software | nginx |
| Compression | gzip |
|
🔒 🟡 Mixed Content (1 HTTP resources) | The page is served over HTTPS but loads 1 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. |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 78.47.220.195
Server Software nginx
Compression gzip
🔒 🟡 Mixed Content (1 HTTP resources) The page is served over HTTPS but loads 1 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.
Performance
| DNS Lookup | 17.6 ms |
| TCP Connect | 29.7 ms |
| TLS Handshake | 19.9 ms |
| Time To First Byte (TTFB) | 82.7 ms |
| Content Download | 0.3 ms |
| Total Response Time | 83 ms |
DNS Lookup 17.6 ms
TCP Connect 29.7 ms
TLS Handshake 19.9 ms
Time To First Byte (TTFB) 82.7 ms
Content Download 0.3 ms
Total Response Time 83 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✘ Not configured |
| CSP | ✔ Configured |
| X-Frame-Options | ✔ SAMEORIGIN |
| X-Content-Type-Options | ✔ nosniff |
| Referrer Policy | strict-origin-when-cross-origin |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✘ Not configured
CSP ✔ Configured
X-Frame-Options ✔ SAMEORIGIN
X-Content-Type-Options ✔ nosniff
Referrer Policy strict-origin-when-cross-origin
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | regex101: build, test, and debug regex |
| Meta Description | Online regex tester and debugger with real-time match highlighting, detailed explanations, substitutions, unit tests, benchmarking, and code generation. Supports PCRE2, JavaScript, Python, Go, Java, .NET, Rust, POSIX ERE, and POSIX BRE. |
| Open Graph Title | regex101: build, test, and debug regex |
| Open Graph Description | Online regex tester and debugger with real-time match highlighting, detailed explanations, substitutions, unit tests, benchmarking, and code generation. Supports PCRE2, JavaScript, Python, Go, Java, .NET, Rust, POSIX ERE, and POSIX BRE. |
| Open Graph Image | https://regex101.com/preview/ |
| Twitter Card | summary_large_image |
| Twitter Title | regex101: build, test, and debug regex |
| Twitter Description | Online regex tester and debugger with real-time match highlighting, detailed explanations, substitutions, unit tests, benchmarking, and code generation. Supports PCRE2, JavaScript, Python, Go, Java, .NET, Rust, POSIX ERE, and POSIX BRE. |
| Twitter Image | https://regex101.com/preview/ |
Title regex101: build, test, and debug regex Meta Description Online regex tester and debugger with real-time match highlighting, detailed explanations, substitutions, unit tests, benchmarking, and code generation. Supports PCRE2, JavaScript, Python, Go, Java, .NET, Rust, POSIX ERE, and POSIX BRE. Open Graph Title regex101: build, test, and debug regex Open Graph Description Online regex tester and debugger with real-time match highlighting, detailed explanations, substitutions, unit tests, benchmarking, and code generation. Supports PCRE2, JavaScript, Python, Go, Java, .NET, Rust, POSIX ERE, and POSIX BRE. Open Graph Image https://regex101.com/preview/ Twitter Card summary_large_image Twitter Title regex101: build, test, and debug regex Twitter Description Online regex tester and debugger with real-time match highlighting, detailed explanations, substitutions, unit tests, benchmarking, and code generation. Supports PCRE2, JavaScript, Python, Go, Java, .NET, Rust, POSIX ERE, and POSIX BRE. Twitter Image https://regex101.com/preview/ Detected Technologies
| Technology | Google Analytics Nginx Node.js |
Technology Google Analytics Nginx Node.js
HTTP Headers
| Server
| nginx |
| Date
| Wed, 26 Aug 2026 02:14:37 GMT |
| Content-type
| text/html; charset=utf-8 |
| Vary
| Accept-Encoding |
| Access-control-allow-origin
| * |
| X-ssr-cache
| hit |
| X-frame-options
| SAMEORIGIN |
| X-xss-protection
| 1; mode=block |
| X-content-type-options
| nosniff |
| Referrer-policy
| strict-origin-when-cross-origin |
| Content-security-policy
| default-src 'self' 'unsafe-eval' http: https: data: blob: 'unsafe-inline'; script-src 'self' 'unsafe-eval' 'unsafe-inline' https://cdn.paddle.com https://public.profitwell.com https://analytics.regex101.com; worker-src 'self' blob:; img-src 'self' data: blob: https://*.buysellads.com https://*.buysellads.net https://*.carbonads.net https://*.doubleclick.net; object-src 'none'; base-uri 'self'; form-action 'self' |
| Service-worker-allowed
| / |
| Cross-origin-opener-policy
| same-origin |
| Cross-origin-embedder-policy
| require-corp |
| Content-encoding
| gzip |
Meta Tags
| Google | notranslate |
| Title | regex101 |
| Description | Online regex tester and debugger with real-time match highlighting, detailed explanations, substitutions, unit tests, benchmarking, and code generation. Supports PCRE2, JavaScript, Python, Go, Java, .NET, Rust, POSIX ERE, and POSIX BRE. |
| Author | Firas Dib |
| Mobile-web-app-capable | yes |
| Apple-mobile-web-app-status-bar-style | black-translucent |
| Apple-mobile-web-app-title | regex101: build, test, and debug regex |
| Application-name | regex101: build, test, and debug regex |
| Format-detection | telephone=no |
| Theme-color | #0f2c48 |
| Apple-mobile-web-app-capable | yes |
| Viewport | width=device-width, minimum-scale=1.0, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, viewport-fit=cover |
| Keywords | regex,regex tester,regular expression,debugger,pcre,php,golang,java,javascript,python,.net,c#,rust |
Server nginx
Date Wed, 26 Aug 2026 02:14:37 GMT
Content-type text/html; charset=utf-8
Vary Accept-Encoding
Access-control-allow-origin *
X-ssr-cache hit
X-frame-options SAMEORIGIN
X-xss-protection 1; mode=block
X-content-type-options nosniff
Referrer-policy strict-origin-when-cross-origin
Content-security-policy default-src 'self' 'unsafe-eval' http: https: data: blob: 'unsafe-inline'; script-src 'self' 'unsafe-eval' 'unsafe-inline' https://cdn.paddle.com https://public.profitwell.com https://analytics.regex101.com; worker-src 'self' blob:; img-src 'self' data: blob: https://*.buysellads.com https://*.buysellads.net https://*.carbonads.net https://*.doubleclick.net; object-src 'none'; base-uri 'self'; form-action 'self'
Service-worker-allowed /
Cross-origin-opener-policy same-origin
Cross-origin-embedder-policy require-corp
Content-encoding gzip
Google notranslate
Title regex101
Description Online regex tester and debugger with real-time match highlighting, detailed explanations, substitutions, unit tests, benchmarking, and code generation. Supports PCRE2, JavaScript, Python, Go, Java, .NET, Rust, POSIX ERE, and POSIX BRE.
Author Firas Dib
Mobile-web-app-capable yes
Apple-mobile-web-app-status-bar-style black-translucent
Apple-mobile-web-app-title regex101: build, test, and debug regex
Application-name regex101: build, test, and debug regex
Format-detection telephone=no
Theme-color #0f2c48
Apple-mobile-web-app-capable yes
Viewport width=device-width, minimum-scale=1.0, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, viewport-fit=cover
Keywords regex,regex tester,regular expression,debugger,pcre,php,golang,java,javascript,python,.net,c#,rust
Twitter:card summary_large_image
Twitter:site @regex101
Twitter:title regex101: build, test, and debug regex
Twitter:description Online regex tester and debugger with real-time match highlighting, detailed explanations, substitutions, unit tests, benchmarking, and code generation. Supports PCRE2, JavaScript, Python, Go, Java, .NET, Rust, POSIX ERE, and POSIX BRE.
Twitter:creator @regex101
Twitter:image https://regex101.com/preview/
Twitter:domain regex101.com
Og:image https://regex101.com/preview/
Og:image:width 1200
Og:image:height 630
Og:title regex101: build, test, and debug regex
Og:description Online regex tester and debugger with real-time match highlighting, detailed explanations, substitutions, unit tests, benchmarking, and code generation. Supports PCRE2, JavaScript, Python, Go, Java, .NET, Rust, POSIX ERE, and POSIX BRE.
Og:url https://regex101.com/
Og:site_name regex101
Og:type website
