What technology does threema.com use?

threema.com is built with Nginx.

Is threema.com secure (HTTPS)?

Yes. threema.com uses TLS 1.3 with a certificate issued by Sectigo Limited, valid until Jan 13, 2027.

Who hosts threema.com?

Hosting provider information for threema.com is not available yet.

What is threema.com's SEO score?

threema.com scored 75/100 for SEO in the latest analysis (fair).

What is threema.com's overall website score?

threema.com has an overall SiteGraph score of 88/100, combining SEO, performance, security, and accessibility.

threema.com

Threema – Secure Communication For Individuals and Companies

Last scanned Jul 26, 2026, 5:47 AM

Overall score

Great

Summary

The secure instant messenger from Switzerland. This website uses Nginx. SEO is good (75/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance good (80/100). Top issue: Title longer than 60 characters.

The secure instant messenger from Switzerland. GDPR-compliant messaging for individuals and organizations that value privacy, security and data protection.

Top issues to fix

5 issues found

Title longer than 60 characters
SEO
Shorten the title to under 60 characters so search results don't truncate it.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.
robots.txt not found
SEO
Publish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEO
Publish an XML sitemap and reference it from robots.txt to speed up page discovery.
20 broken links on the page
SEO
Fix or remove broken links — they waste crawl budget and erode user trust.

SEO

4 issue(s) found

Performance

1.49 s

100

Security

HTTPS & header checks

100

Accessibility

0 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.

Organization

Company details published in this site's own structured data.

The secure instant messenger from Switzerland. GDPR-compliant messaging for individuals and organizations that value privacy, security and data protection.

X (Twitter)LinkedIn

Meta tags

Title: Threema – Secure Communication For Individuals and Companies
Description: The secure instant messenger from Switzerland. GDPR-compliant messaging for individuals and organizations that value privacy, security and data protection.
Canonical: https://threema.com/en
Language: en
Charset: utf-8
Viewport: width=device-width, initial-scale=1
Robots meta: index, follow
Manifest

Technologies

Detected frameworks, languages, and tools.

Nginx

Hosting & CDN

Hosting provider: —
CDN provider: —
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: Sectigo Limited
Subject: *.threema.com
Valid from: Jun 29, 2026
Valid to: Jan 13, 2027
Days until expiry: 169
SAN domains: *.threema.com, threema.com

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 7 · H3 14

Links

83 internal · 21 external · 20 broken

Images

247 total · 0 missing alt

Scripts / Styles

6 scripts · 2 stylesheets

JS / CSS size

823 B · 1.3 KB

Page size

584 KB

Robots.txt & Sitemap

robots.txt: Not found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Title longer than 60 characters
No structured data (JSON-LD) found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://threema.com
Final URL: https://threema.com/en
HTTP status: 200
HTTP version: HTTP/2
Response time: 1.48 s
HTML size: 584 KB
Redirect chain: https://threema.com → https://threema.com/en

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does threema.com use?: threema.com is built with Nginx.
Is threema.com secure (HTTPS)?: Yes. threema.com uses TLS 1.3 with a certificate issued by Sectigo Limited, valid until Jan 13, 2027.
Who hosts threema.com?: Hosting provider information for threema.com is not available yet.
What is threema.com's SEO score?: threema.com scored 75/100 for SEO in the latest analysis (fair).
What is threema.com's overall website score?: threema.com has an overall SiteGraph score of 88/100, combining SEO, performance, security, and accessibility.