regular-expressions.info
Regular-Expressions.info - Regex Tutorial, Examples and Reference - Regexp Patterns
Last scanned Aug 3, 2026, 2:00 PM · 9 views
Overall score
Great
Summary
At Regular-Expressions.info you will find a wide range of in-depth information about a powerful search pattern language called regular expressions. This website uses Apache. SEO is fair (70/100) and accessibility is good (85/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.
At Regular-Expressions.info you will find a wide range of in-depth information about a powerful search pattern language called regular expressions.
Top issues to fix
7 issues found
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Title longer than 60 characters
SEOShorten the title to under 60 characters so search results don't truncate it.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEOAdd og:title/og:description/og:image so shared links render a proper preview card.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
+1 more issue — details in the sections below.
SEO
5 issue(s) found
Performance
483 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Score history
-6 overall since Jul 26, 2026
- Overall
- 86
- SEO
- 70
- Security
- 90
- Performance
- 100
- Accessibility
- 85
Organization
Company details published in this site's own structured data.
At Regular-Expressions.info you will find a wide range of in-depth information about a powerful search pattern language called regular expressions.
Meta tags
- Title
- Regular-Expressions.info - Regex Tutorial, Examples and Reference - Regexp Patterns
- Description
- At Regular-Expressions.info you will find a wide range of in-depth information about a powerful search pattern language called regular expressions.
- Canonical
- https://www.regular-expressions.info/
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- regular-expressions.info
- Valid from
- Jul 1, 2026
- Valid to
- Sep 29, 2026
- Days until expiry
- 57
- SAN domains
- regular-expressions.info, www.regular-expressions.info
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsMissing
- X-Content-Type-OptionsEnabled
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 4 · H3 2
Links
19 internal · 2 external · 0 broken
Images
3 total · 1 missing alt
Scripts / Styles
2 scripts · 1 stylesheets
JS / CSS size
11 B · 0 B
Page size
13.0 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Title longer than 60 characters
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- More than 20% of images are missing alt text
Scan details
- Requested URL
- https://regular-expressions.info
- Final URL
- https://www.regular-expressions.info/
- HTTP status
- 200
- HTTP version
- HTTP/1.1
- Response time
- 483 ms
- HTML size
- 13.0 KB
- Redirect chain
- https://regular-expressions.info → https://www.regular-expressions.info/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does regular-expressions.info use?
- regular-expressions.info is built with Apache.
- Is regular-expressions.info secure (HTTPS)?
- Yes. regular-expressions.info uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 29, 2026.
- Who hosts regular-expressions.info?
- Hosting provider information for regular-expressions.info is not available yet.
- What is regular-expressions.info's SEO score?
- regular-expressions.info scored 70/100 for SEO in the latest analysis (fair).
- What is regular-expressions.info's overall website score?
- regular-expressions.info has an overall SiteGraph score of 86/100, combining SEO, performance, security, and accessibility.
- Has regular-expressions.info's score changed over time?
- regular-expressions.info's overall score has declined by 6 points (from 92 to 86) since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card