What technology does zenodo.org use?

zenodo.org is built with Nginx.

Is zenodo.org secure (HTTPS)?

Yes. zenodo.org uses TLS 1.3 with a certificate issued by Sectigo Limited, valid until Nov 19, 2026.

What is zenodo.org's SEO score?

zenodo.org scored 60/100 for SEO in the latest analysis (fair).

What is zenodo.org's overall website score?

zenodo.org has an overall SiteGraph score of 76/100, combining SEO, performance, security, and accessibility.

zenodo.org

Zenodo

Last scanned Jul 21, 2026, 11:40 AM · 2 views

Overall score

Fair

Top issues to fix

6 issues found · 2 high priority

Missing meta description
SEO
Add a ~150-character meta description to control your search-result snippet and lift click-through rate.
No H1 heading found
SEO
Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEO
Add og:title/og:description/og:image so shared links render a proper preview card.
2 broken links on the page
SEO
Fix or remove broken links — they waste crawl budget and erode user trust.

Summary

This website uses Nginx hosted on CERN - CERN - European Organization for Nuclear Research, CH. SEO is fair (60/100) and accessibility is excellent (90/100). Security scores excellent (100/100) and performance fair (60/100). Top issue: Missing meta description.

SEO

5 issue(s) found

Performance

469 ms

100

Security

HTTPS & header checks

Accessibility

1 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Contact

Email, phone, and address published on this site's own pages.

Email: your-email@example.com

Technologies

Detected frameworks, languages, and tools.

Nginx

Hosting & CDN

Hosting provider: CERN - CERN - European Organization for Nuclear Research, CH
CDN provider: —
IP address: 137.138.52.235
ASN: AS513 (CERN - CERN - European Organization for Nuclear Research, CH)

DNS records

Type	Value
A	137.138.52.235 188.185.43.153 188.184.103.118 188.185.48.75 137.138.153.219 188.184.98.114
AAAA	2001:1458:d00:61::100:427 2001:1458:d00:13::100:f2 2001:1458:d00:3b::100:4d6 2001:1458:d00:3a::100:3da 2001:1458:d00:24::100:245 2001:1458:d00:17::100:1d9
MX	cern-ch.mail.protection.outlook.com
TXT	google-site-verification=5fPGCLllnWrvFxH9QWI0l1TadV7byeEvfPcyK2VkS_s v=spf1 include:spf.cern.ch include:smtp1.uservoice.com -all MS=ms55096257
NS	surina.ns.cloudflare.com albert.ns.cloudflare.com
CAA	—
CNAME	—
IPv6 support	Yes

TLS / SSL certificate

Version: TLS 1.3
Issuer: Sectigo Limited
Subject: *.zenodo.org
Valid from: May 5, 2026
Valid to: Nov 19, 2026
Days until expiry: 121
SAN domains: *.zenodo.org, zenodo.org

Security headers

Strict-Transport-SecurityEnabled
Content-Security-PolicyEnabled
X-Frame-OptionsEnabled
X-Content-Type-OptionsEnabled
Referrer-PolicyEnabled
Permissions-PolicyEnabled

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 0 · H2 10 · H3 0

Links

51 internal · 36 external · 2 broken

Images

29 total · 0 missing alt

Scripts / Styles

29 scripts · 1 stylesheets

JS / CSS size

3.7 MB · 1.5 MB

Page size

68.2 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 10
sitemap.xml: Found
URLs in sitemap: -1

SEO issues

Missing meta description
Missing canonical link
No H1 heading found
No structured data (JSON-LD) found
Missing OpenGraph tags

Scan details

Requested URL: https://zenodo.org
Final URL: https://zenodo.org
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 468 ms
HTML size: 68.2 KB
Redirect chain: https://zenodo.org

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Frequently asked questions

What technology does zenodo.org use?: zenodo.org is built with Nginx.
Is zenodo.org secure (HTTPS)?: Yes. zenodo.org uses TLS 1.3 with a certificate issued by Sectigo Limited, valid until Nov 19, 2026.
Who hosts zenodo.org?: zenodo.org is hosted on CERN - CERN - European Organization for Nuclear Research, CH.
What is zenodo.org's SEO score?: zenodo.org scored 60/100 for SEO in the latest analysis (fair).
What is zenodo.org's overall website score?: zenodo.org has an overall SiteGraph score of 76/100, combining SEO, performance, security, and accessibility.