regexlib.com
Regular Expression Library
Last scanned Aug 5, 2026, 5:00 PM · 10 views
Overall score
Fair
Summary
Regular Expression Library provides a searchable database of regular expressions. This website uses Google Analytics behind Cloudflare CDN. SEO is fair (70/100) and accessibility is good (85/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing canonical link.
Regular Expression Library provides a searchable database of regular expressions. Users can add, edit, rate, and test regular expressions.
Top issues to fix
12 issues found · 3 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing viewport meta tag
AccessibilityAdd <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
+6 more issues — details in the sections below.
SEO
5 issue(s) found
Performance
592 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Score history
0 overall since Jul 26, 2026
- Overall
- 79
- SEO
- 70
- Security
- 65
- Performance
- 100
- Accessibility
- 85
Organization
Company details published in this site's own structured data.
Regular Expression Library provides a searchable database of regular expressions. Users can add, edit, rate, and test regular expressions.
Meta tags
- Title
- Regular Expression Library
- Description
- Regular Expression Library provides a searchable database of regular expressions. Users can add, edit, rate, and test regular expressions.
- Canonical
- Language
- Charset
- Viewport
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- Cloudflare
- 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
- Google Trust Services
- Subject
- regexlib.com
- Valid from
- Jun 24, 2026
- Valid to
- Sep 22, 2026
- Days until expiry
- 47
- SAN domains
- regexlib.com, *.regexlib.com
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 3 · H3 9
Links
24 internal · 13 external · 20 broken
Images
2 total · 0 missing alt
Scripts / Styles
13 scripts · 3 stylesheets
JS / CSS size
523 B · 0 B
Page size
19.9 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing canonical link
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- Missing <html lang> attribute
- Missing viewport meta tag
Scan details
- Requested URL
- https://regexlib.com
- Final URL
- https://regexlib.com/(X(1)A(vlRsr4F6IbxyS2w2wYSwgriKcCojtrJScbFm90z61Md0tzHZYS0uqQCvI1gQ88TzdEOZINlVS58LBj9UlVM982wYdnWzOzIKd9U421i_4W7Txx5KDKZZitjLJDGD5iT2LHqTdVZd8r5aL3txEysjGHv3oQS6lMtqmkPITNu4NxmDMQMgIy2DdRlehz71XLwT0))/?AspxAutoDetectCookieSupport=1
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 592 ms
- HTML size
- 19.9 KB
- Redirect chain
- https://regexlib.com → https://regexlib.com/?AspxAutoDetectCookieSupport=1 → https://regexlib.com/(X(1)A(vlRsr4F6IbxyS2w2wYSwgriKcCojtrJScbFm90z61Md0tzHZYS0uqQCvI1gQ88TzdEOZINlVS58LBj9UlVM982wYdnWzOzIKd9U421i_4W7Txx5KDKZZitjLJDGD5iT2LHqTdVZd8r5aL3txEysjGHv3oQS6lMtqmkPITNu4NxmDMQMgIy2DdRlehz71XLwT0))/?AspxAutoDetectCookieSupport=1
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Frequently asked questions
- What technology does regexlib.com use?
- regexlib.com is built with Google Analytics, Cloudflare Analytics.
- Is regexlib.com secure (HTTPS)?
- Yes. regexlib.com uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Sep 22, 2026.
- Who hosts regexlib.com?
- Hosting provider information for regexlib.com is not available yet.
- What is regexlib.com's SEO score?
- regexlib.com scored 70/100 for SEO in the latest analysis (fair).
- What is regexlib.com's overall website score?
- regexlib.com has an overall SiteGraph score of 79/100, combining SEO, performance, security, and accessibility.
- Has regexlib.com's score changed over time?
- regexlib.com's overall score has stayed steady at 79/100 since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card