clickhouse.com
Fast Open-Source OLAP DBMS | ClickHouse
Last scanned Jul 29, 2026, 7:00 PM · 16 views
Overall score
Excellent
Summary
ClickHouse is a fast open-source column-oriented database management system that allows generating analytical data reports in real-time using SQL queries. This website uses Next.js behind Cloudflare CDN. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance excellent (90/100). Top issue: robots.txt not found.
ClickHouse is a fast open-source column-oriented database management system that allows generating analytical data reports in real-time using SQL queries
Top issues to fix
4 issues found
1 cookie without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
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.
20 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
2 issue(s) found
Performance
85 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
-3 overall since Jul 22, 2026
- Overall
- 95
- SEO
- 90
- Security
- 100
- Performance
- 90
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
ClickHouse is a fast open-source column-oriented database management system that allows generating analytical data reports in real-time using SQL queries
Meta tags
- Title
- Fast Open-Source OLAP DBMS | ClickHouse
- Description
- ClickHouse is a fast open-source column-oriented database management system that allows generating analytical data reports in real-time using SQL queries
- Canonical
- https://clickhouse.com
- Language
- en-US
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
- https://clickhouse.com/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
- clickhouse.com
- Valid from
- Jul 2, 2026
- Valid to
- Sep 30, 2026
- Days until expiry
- 62
- SAN domains
- clickhouse.com, crash.clickhouse.com
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: gzip · 2 cookie(s) observed
Content & assets
Headings
H1 1 · H2 9 · H3 17
Links
142 internal · 20 external · 20 broken
Images
96 total · 0 missing alt
Scripts / Styles
67 scripts · 5 stylesheets
JS / CSS size
178 KB · 0 B
Page size
326 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://clickhouse.com
- Final URL
- https://clickhouse.com
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 79 ms
- HTML size
- 326 KB
- Redirect chain
- https://clickhouse.com
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does clickhouse.com use?
- clickhouse.com is built with Next.js.
- Is clickhouse.com secure (HTTPS)?
- Yes. clickhouse.com uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Sep 30, 2026.
- Who hosts clickhouse.com?
- Hosting provider information for clickhouse.com is not available yet.
- What is clickhouse.com's SEO score?
- clickhouse.com scored 90/100 for SEO in the latest analysis (excellent).
- What is clickhouse.com's overall website score?
- clickhouse.com has an overall SiteGraph score of 95/100, combining SEO, performance, security, and accessibility.
- Has clickhouse.com's score changed over time?
- clickhouse.com's overall score has declined by 3 points (from 98 to 95) since Jul 22, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card