lesscss.org
Getting started | Less.js
Last scanned Aug 3, 2026, 12:30 PM · 9 views
Overall score
Fair
Summary
Less extends CSS with dynamic behavior such as variables, mixins, operations and functions. This website uses Google Analytics hosted on Fastly behind Fastly CDN. SEO is fair (60/100) and accessibility is fair (70/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.
Less extends CSS with dynamic behavior such as variables, mixins, operations and functions. Less runs on both the server-side (with Node.js and Rhino) or client-side (modern browsers only).
- United States
- Hosted on Fastly
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.
Over half of images are missing alt text
AccessibilityAdd alt attributes to images — screen readers depend on them, and they help image SEO.
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.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
+6 more issues — details in the sections below.
SEO
7 issue(s) found
Performance
225 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Score history
0 overall since Jul 26, 2026
- Overall
- 73
- SEO
- 60
- Security
- 65
- Performance
- 100
- Accessibility
- 70
Organization
Company details published in this site's own structured data.
Less extends CSS with dynamic behavior such as variables, mixins, operations and functions. Less runs on both the server-side (with Node.js and Rhino) or client-side (modern browsers only).
Meta tags
- Title
- Getting started | Less.js
- Description
- Less extends CSS with dynamic behavior such as variables, mixins, operations and functions. Less runs on both the server-side (with Node.js and Rhino) or client-side (modern browsers only).
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1.0
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
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
- lesscss.org
- Valid from
- Jun 19, 2026
- Valid to
- Sep 17, 2026
- Days until expiry
- 44
- SAN domains
- lesscss.org, www.lesscss.org
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 12 · H2 2 · H3 1
Links
16 internal · 10 external · 0 broken
Images
1 total · 1 missing alt
Scripts / Styles
9 scripts · 3 stylesheets
JS / CSS size
262 KB · 161 KB
Page size
29.2 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Meta description longer than 160 characters
- Missing canonical link
- Multiple H1 headings found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- Over half of images are missing alt text
Scan details
- Requested URL
- https://lesscss.org
- Final URL
- https://lesscss.org
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 225 ms
- HTML size
- 29.2 KB
- Redirect chain
- https://lesscss.org
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does lesscss.org use?
- lesscss.org is built with jQuery, Google Analytics.
- Is lesscss.org secure (HTTPS)?
- Yes. lesscss.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 17, 2026.
- Who hosts lesscss.org?
- lesscss.org is hosted on Fastly, behind Fastly CDN.
- What is lesscss.org's SEO score?
- lesscss.org scored 60/100 for SEO in the latest analysis (fair).
- What is lesscss.org's overall website score?
- lesscss.org has an overall SiteGraph score of 73/100, combining SEO, performance, security, and accessibility.
- Has lesscss.org's score changed over time?
- lesscss.org's overall score has stayed steady at 73/100 since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card