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Security report for smallpdf.com

Smallpdf AG · Technology · Switzerland

Low risk. 4 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

78/100

Risk levelLow

0–100, higher is better. How it is calculated

Smallpdf AG operates a globally recognized SaaS platform specializing in PDF file management and editing tools. Founded in 2013 and headquartered in Switzerland, Smallpdf offers a comprehensive suite of PDF solutions including conversion, compression, editing, signing, and AI-enhanced features. The company holds a strong market position as a trusted provider with a freemium business model complemented by Pro subscriptions. Their digital presence is robust, featuring well-structured content, consistent branding, and active social media engagement. Technically, Smallpdf leverages modern web technologies, including React and AWS infrastructure, ensuring fast performance and excellent mobile optimization. Security practices are solid, with HTTPS enforcement, domain transfer protection, and a dedicated vulnerability disclosure channel. The domain registration details align well with the business claims, supporting legitimacy and trustworthiness. Overall, Smallpdf demonstrates a mature digital and security posture suitable for its industry and customer base.

Scanned

NIS2 and GDPR posture

GDPR outside view
65/ 100 · Medium
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

4 findings rated critical or high. Fix these first.

  1. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  3. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

Need hands-on remediation? Email guard@offseq.com

Keep watching smallpdf.com

This scan found 17 issues across 6 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

Daily monitoring

Recommended

€25per month

  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

Email alerts on material changes and an exportable JSON history of every change.

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Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
82
Security headers
45
Email security
87
DNS health
90
Network security
100
GDPR outside view
65
Average
78

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention smallpdf.com, from OffSeq Breach.

Total records
607,303
Employees
4
Customers
607,247
Third parties
52
Weak passwords
19%

Latest record dated 2025-08-08 · 31 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for smallpdf.com.

Select it in the checkout above.

Masked preview

  • –smallpdf.com2025-08-08
  • –smallpdf.com2025-07-20
  • –smallpdf.com2025-07-19
  • –smallpdf.com2025-04-14

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Open in Breach(opens in a new tab)Monitor on Breach(opens in a new tab)

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Smallpdf targets a broad audience ranging from individual users to enterprises requiring PDF solutions. Its freemium model encourages adoption with free tools while monetizing advanced features through Pro subscriptions. The company benefits from a strong brand and award recognition, enhancing market credibility. Partnerships, such as with Sign.com for e-signature services, expand its ecosystem. The platform supports multiple languages and regions, indicating a global strategy. Revenue streams likely include subscription fees and enterprise licensing. The company maintains clear legal and contact information, reinforcing transparency and customer trust.

Security posture

Smallpdf exhibits a high level of security maturity with enforced HTTPS, domain transfer lock, and a public vulnerability disclosure policy. While DNSSEC is not enabled, other security headers are likely implemented. No critical vulnerabilities or exposed sensitive data were detected in the analyzed content. The presence of a dedicated security contact email and a vulnerability disclosure page indicates readiness for incident response. However, publishing a security.txt file and disclosing formal security frameworks could further enhance trust. Overall, the security posture is strong and appropriate for a SaaS provider handling sensitive documents.

Recommendations

  1. Enable DNSSEC to improve domain name system security and prevent DNS spoofing.
  2. Publish a security.txt file at the root domain to facilitate responsible vulnerability reporting.
  3. Disclose adherence to recognized security frameworks (e.g., ISO 27001, SOC 2) to boost customer confidence.
  4. Regularly audit and update third-party libraries to mitigate risks from vulnerable dependencies.
  5. Enhance transparency on data retention policies and privacy compliance details.

Contact details published on the site

Addresses
Legal name
Smallpdf AG
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Smallpdf AG
Description
Smallpdf - the platform that makes it super easy to convert and edit all your PDF files. Solving all your PDF problems in one place - and yes, free.
Key services
PDF conversion, PDF editing, PDF compression, PDF signing, AI-powered PDF tools
Content quality
excellent
Branding
consistent

Technology

Stack
React (implied by SPA scripts), AWS DNS hosting, Google Fonts, JSON-LD structured data, JavaScript heavy frontend
Frameworks
React
Platforms
Web, Windows Desktop App, Mac Desktop App, Mobile Apps (iOS, Android)
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • clientTransferProhibited domain status
  • security contact email provided
  • vulnerability disclosure page

Analytics and tracking

Services
TrackJS
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
TrackJS
Marketing tools
TrackJS
Transparency
basic

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website is a professional SaaS platform for PDF tools
  2. Strong brand presence with consistent messaging
  3. Comprehensive service offerings including AI-powered PDF features
  4. Good security posture with HTTPS and domain transfer protection
  5. No signs of blocking or WAF interference
  6. Clear contact and legal information provided
  7. Active social media presence and award recognition
Technical notes

Notes

The website employs a modern technology stack with React-based frontend and AWS-hosted backend infrastructure. Performance is optimized with preconnect and preload hints, and fonts are loaded efficiently from Google Fonts. The site is mobile-optimized and accessible, with semantic HTML and structured data (JSON-LD) for SEO benefits. The absence of a detected CMS suggests a custom or headless CMS solution. JavaScript tracking via TrackJS is used for error monitoring. The domain's DNS is managed by AWS Route 53, indicating reliable hosting. Overall, the technical implementation supports a fast, scalable, and user-friendly experience with minimal technical debt.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

Earlier scans of this domain

  1. 77/100Low25 findingsView report
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