coolors.co
Coolors - The super fast color palettes generator!
Last scanned Jul 25, 2026, 4:25 AM · 2 views
Overall score
Great
Summary
Generate or browse beautiful color combinations for your designs. This website uses Google Analytics hosted on Cloudflare behind Cloudflare CDN. SEO is good (80/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (90/100). Top issue: Missing canonical link.
Generate or browse beautiful color combinations for your designs.
- United States
- Hosted on Cloudflare
Products & pricing
Product and pricing information published in this site's own structured data.
Allow the ads
$3/mo USD
Top issues to fix
7 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.
+1 more issue — details in the sections below.
SEO
3 issue(s) found
Performance
499 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
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
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 104.20.46.243
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
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
- 58
- 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 · 0 broken
Images
33 total · 5 missing alt
Scripts / Styles
11 scripts · 4 stylesheets
JS / CSS size
444 KB · 0 B
Page size
552 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 4
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Missing canonical link
- Multiple H1 headings found
- No structured data (JSON-LD) found
Accessibility issues
No accessibility issues detected.
Careers
This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.
Scan details
- Requested URL
- https://coolors.co
- Final URL
- https://coolors.co
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 488 ms
- HTML size
- 552 KB
- Redirect chain
- https://coolors.co
See something wrong on this report? Request a correction
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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?
- coolors.co is hosted on Cloudflare, behind Cloudflare CDN.
- What is coolors.co's SEO score?
- coolors.co scored 80/100 for SEO in the latest analysis (great).
- What is coolors.co's overall website score?
- coolors.co has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.
- What products does coolors.co offer?
- coolors.co offers Allow the ads.
- Is coolors.co hiring?
- coolors.co has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card