Pdf24.org (Domain) Investigation Report
Generated on Mar 18, 2026
Why we think so?
pdf24.org is a popular site providing free tools for managing PDF files online and offline, including merging, compressing, and editing PDFs. It ranks around #2,580 globally with about 17 million monthly visits, mainly from Germany. The site uses standard technologies like Cloudflare CDN and Google Analytics, indicating a professional setup. Whois records show it has been registered since 2005 with a German registrar. No scam listings, trademark conflicts, or phishing alerts are found. Several valid contact emails and a GitHub presence add to its credibility. Recent news articles mention it as a useful and reliable PDF tool. Overall, pdf24.org appears to be a legitimate and trustworthy service for PDF management.
Risk Insights
Established Domain
- Registered since 2005 in Germany
- Stable domain status and registrar
High Traffic Volume
- About 17 million visits per month
- Strong engagement with 4 pages per visit
No Scam or Phishing Alerts
- Not listed on scam blacklists
- Clear Google Safe Browsing status
Category Scores
Red Flags & Warnings
- The site shows extensive use of many advertising technologies which might affect user privacy.
Detailed Checks & Insights
0-100 Scale
Domain Age and Ownership
Score: 95
Domain Age and Ownership
"WHOIS data confirms registration date and consistent domain state flags."
Reason: The domain has been registered since 2005 with a reputable German registrar, indicating established and stable ownership.
Traffic and Popularity
Score: 90
Traffic and Popularity
"SimilarWeb and SimilarTech data show steady monthly visits and user engagement metrics."
Reason: High traffic volume (~17 million monthly visits) and strong global rank (#2,580) support active and genuine user interest.
Technical Infrastructure
Score: 88
Technical Infrastructure
"Technical stack includes mainstream ad networks and analytics consistent with legitimate sites."
Reason: Uses standard and reputable technologies including Cloudflare CDN and HTTPS with valid SSL certificates.
Safety and Scam Listings
Score: 92
Safety and Scam Listings
"No negative flags detected in security checks."
Reason: No records on crypto scam blacklists or Google Safe Browsing phishing lists.
Legal and Trademark Checks
Score: 90
Legal and Trademark Checks
"USPTO searches show zero conflicting trademarks."
Reason: No trademark conflicts found for the brand name, reducing legal risk.
Transparency and Contact Information
Score: 85
Transparency and Contact Information
"Contact info includes support and team addresses with verifiable external references."
Reason: The site publishes multiple professional contact emails and maintains a GitHub presence.
Your Next Steps
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1
Verify you are on the official pdf24.org website before uploading sensitive documents.
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2
Use provided official contact emails for support questions to avoid phishing.
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3
Keep your PDF software updated and scan downloads for malware as a general security practice.
Key Evidence & Citations
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pdf24.org profile on SimilarTech
⤷ Displays tech stack, traffic rank, and monthly visits.
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pdf24.org traffic overview on SimilarWeb (Feb 2026)
⤷ Shows monthly visits, traffic sources, and geographic distribution.
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Whois record for pdf24.org
⤷ Domain registered since 2005 with professional hosting details.
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USPTO trademark search for 'pdf24'
⤷ No trademark conflicts found.
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PCWorld article mentioning PDF24 tools
⤷ Describes PDF24 as easy-to-use and reliable free PDF tools.
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