Skip to main content

Security report for cleancss.com

Dan's Tools · Technology · N/a

Medium risk. 7 critical or high findings in Email security, Security headers and 2 other checks.

Security score

61/100

Risk levelMedium

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

CleanCSS.com is a niche online platform offering a comprehensive suite of free web development tools focused on code formatting, minification, and data conversion. The site targets web developers and programmers seeking easy-to-use utilities to beautify and optimize CSS, HTML, JavaScript, JSON, XML, and other formats. Supported primarily through advertising, the platform maintains a consistent brand identity under Dan's Tools, with a presence dating back to 2014. Technically, the site leverages Bootstrap, jQuery, Font Awesome, and Google services such as Analytics and Adsense, delivering a moderately performant and mobile-optimized experience. However, the absence of WHOIS registration data raises concerns about domain legitimacy and ownership transparency. Security posture is moderate, with HTTPS implied but lacking explicit security headers and advanced protections on user input forms. Privacy compliance is basic, with a privacy policy present but no cookie consent mechanism or GDPR indicators. Overall, the site is functional and trustworthy for its intended audience but would benefit from enhanced security and compliance measures.

Scanned

NIS2 and GDPR posture

GDPR outside view
53/ 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

7 findings rated critical or high. Fix these first.

  1. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  2. 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 Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • 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';…

  3. 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

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

Keep watching cleancss.com

This scan found 27 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.

Billed monthly to your card. Cancel anytime. See sample alerts.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
62
Security headers
20
Email security
60
DNS health
70
Network security
100
GDPR outside view
53
Average
61

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

Technical appendix

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

Business context

Business profile

The business operates as a small technology entity providing free developer tools monetized via advertising networks like Google Adsense and Ezoic. Its competitive advantage lies in the breadth of utilities offered in a single platform, appealing to developers needing quick code formatting and conversion. The business model is freemium with optional user accounts for premium features and forums. The target market includes individual developers, hobbyists, and small teams. The partnership ecosystem includes related domains under Dan's Tools and various web utility sites. Growth indicators are limited but steady, with social media engagement primarily on Twitter. Strategic observations suggest focusing on improving domain registration transparency and enhancing privacy and security compliance to build greater trust.

Security posture

The website demonstrates a moderate security maturity level. HTTPS is used, but no explicit security headers like Content Security Policy or HSTS are detected. User-facing forms for login and registration exist but lack visible CSRF tokens or advanced input validation indicators. No vulnerability disclosure or incident response policies are published, and no security certifications are evident. Privacy compliance is minimal, with no cookie consent banners or GDPR-specific disclosures. The absence of WHOIS data for the domain is a notable risk factor, potentially impacting trust and domain ownership verification. Overall, the security posture is adequate for a low-risk utility site but requires improvements to meet modern compliance and security standards.

Recommendations

  1. Implement and enforce security headers such as CSP, HSTS, X-Frame-Options, and X-XSS-Protection.
  2. Add CSRF tokens and input validation to all user input forms to prevent common web vulnerabilities.
  3. Introduce a cookie consent banner and update privacy policy to reflect GDPR and other privacy regulations.
  4. Verify and publish accurate WHOIS domain registration information to improve trustworthiness.
  5. Develop and publish a vulnerability disclosure policy and incident response contact information.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Dan's Tools
Description
Clean CSS offers online tools to format, beautify, minify, compress, and convert CSS, HTML, JavaScript, JSON, XML, and other file formats. It also provides various developer utilities such as converters, validators, and generators.
Key services
CSS Formatter, JavaScript Formatter, HTML Beautifier, Minify tools for CSS, JS, JSON, Data converters (CSV, JSON, XML, TSV), Hash generators (MD5, SHA), Encoding/decoding tools (Base64, URL), Various developer utilities
Content quality
good
Branding
consistent

Technology

Stack
jQuery 2.2.4, Bootstrap 3.4.1, Font Awesome 4.0.3, Google Analytics, Google Adsense
Frameworks
Bootstrap
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
60/100
Good practices seen
  • Use of HTTPS (implied by URL https://)
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
Google Adsense, Ezoic
Marketing tools
Google Adsense
Transparency
basic

Site quality

Design
good
User experience
good
Content relevance
good
Navigation
good
Professionalism
good
Trustworthiness
moderate

Key observations

  1. Website offers a broad suite of free online developer tools focused on code formatting, minification, and conversion.
  2. No WHOIS data available, indicating possible domain registration issues or privacy protection.
  3. No explicit contact emails or phone numbers found on the site.
  4. Privacy policy and terms of service pages exist but are basic.
  5. Site uses Google Adsense and Ezoic for monetization.
  6. No advanced security headers detected in HTML content.
  7. Login and join forms present but no visible advanced security measures.
  8. Social media presence limited to Twitter @danstools00.
  9. No cookie consent banner or explicit cookie policy detected.
  10. No security.txt or vulnerability disclosure policy found.
Technical notes

Notes

The website uses a stable and widely adopted technology stack including Bootstrap 3.4.1, jQuery 2.2.4, and Font Awesome 4.0.3, ensuring compatibility and ease of maintenance. Hosting leverages Cloudfront CDN for static assets, improving load times. Performance is moderate with room for optimization, especially in mobile responsiveness and accessibility features. SEO is supported by appropriate meta tags and structured navigation. However, the site lacks modern security headers and advanced privacy compliance mechanisms. Technical debt is moderate due to older library versions and missing security best practices. Opportunities exist to modernize the stack, enhance security, and improve compliance to reduce operational risks.
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

Reviews of this site

Share your experience with cleancss.com. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review cleancss.com.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.