coolors.co
Coolors - The super fast color palettes generator!
Last scanned Aug 1, 2026, 5:00 AM · 13 views
Overall score
Fair
Summary
Generate or browse beautiful color combinations for your designs. This website uses Google Analytics behind Cloudflare CDN. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance good (80/100). Top issue: Missing canonical link.
Generate or browse beautiful color combinations for your designs.
Top issues to fix
10 issues found · 2 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 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.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
+4 more issues — details in the sections below.
SEO
5 issue(s) found
Performance
1.30 s
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
-6 overall since Jul 25, 2026
- Overall
- 77
- SEO
- 70
- Security
- 65
- Performance
- 80
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
Generate or browse beautiful color combinations for your designs.
Contact
Email, phone, and address published on this site's own pages.
- john@email.com
Meta tags
- Title
- Coolors - The super fast color palettes generator!
- Description
- Generate or browse beautiful color combinations for your designs.
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width,height=device-height,user-scalable=no,initial-scale=1.0,maximum-scale=1.0,minimum-scale=1.0
- Robots meta
- Manifest
- https://coolors.co/manifest.webmanifest
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
- coolors.co
- Valid from
- Jun 23, 2026
- Valid to
- Sep 21, 2026
- Days until expiry
- 51
- SAN domains
- coolors.co, *.coolors.co
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 1 cookie(s) observed
Content & assets
Headings
H1 5 · H2 4 · H3 1
Links
93 internal · 16 external · 20 broken
Images
33 total · 5 missing alt
Scripts / Styles
11 scripts · 4 stylesheets
JS / CSS size
363 KB · 0 B
Page size
552 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing canonical link
- Multiple H1 headings found
- No structured data (JSON-LD) found
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://coolors.co
- Final URL
- https://coolors.co
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 1.29 s
- HTML size
- 552 KB
- Redirect chain
- https://coolors.co
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Frequently asked questions
- What technology does coolors.co use?
- coolors.co is built with PHP, Google Analytics.
- Is coolors.co secure (HTTPS)?
- Yes. coolors.co uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Sep 21, 2026.
- Who hosts coolors.co?
- Hosting provider information for coolors.co is not available yet.
- What is coolors.co's SEO score?
- coolors.co scored 70/100 for SEO in the latest analysis (fair).
- What is coolors.co's overall website score?
- coolors.co has an overall SiteGraph score of 77/100, combining SEO, performance, security, and accessibility.
- Has coolors.co's score changed over time?
- coolors.co's overall score has declined by 6 points (from 83 to 77) since Jul 25, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card