Yumpu.com (Domain) Investigation Report
Generated on Mar 16, 2026
Why we think so?
Yumpu.com is a digital publishing platform that ranks #4,439 globally with about 8.7 million monthly visits, mainly from the United States. It offers PDF-to-flipbook conversion and related services in the science and education sector. The domain was registered in November 2010, uses valid Amazon-issued SSL certificates, and has established DNS and hosting infrastructure across AWS. However, multiple user reviews report billing issues, unexpected charges after free trials, poor customer support, and concerns about deceptive billing practices. Automated trust tools rate the site as generally legitimate, but the volume and consistency of negative user feedback suggest caution when engaging or providing payment details.
Risk Insights
Established Domain with Professional Infrastructure
- Registered since 2010 through a reputable registrar.
- Uses Amazon hosting and CDN for stability and security.
- Valid SSL certificate issued by Amazon RSA.
High Traffic but Mixed User Experience
- About 8.7 million monthly visits mostly from the US.
- Users report billing scams and poor refund practices.
- Automated tools find no malware or phishing flags.
Category Scores
Red Flags & Warnings
- Multiple verified customer complaints about unauthorized billing and difficulty obtaining refunds.
Detailed Checks & Insights
0-100 Scale
Domain Age and Registrar Reputation
Score: 85
Domain Age and Registrar Reputation
"Established domain age supports legitimacy, registered via united domains AG; domain is not expiring soon."
Reason: The domain is registered since 2010 with a reputable registrar and no indications of recent suspicious transfers.
Website Traffic and Geography
Score: 80
Website Traffic and Geography
"Traffic sources are mostly direct and search with negligible social or mail referrals; category 'Science & Education'."
Reason: High monthly traffic (~8.7M) mainly from the US indicates a significant user base and stable traffic sources.
Technical Infrastructure and Security
Score: 85
Technical Infrastructure and Security
"Supports website reliability and security; no SSL or DNS anomalies detected."
Reason: Use of Amazon hosting, CloudFront CDN, Amazon Route 53 DNS, and valid SSL cert indicates a secure, professional setup.
Brand and Trademark Analysis
Score: 60
Brand and Trademark Analysis
"Trademarks are live or properly handled; no active office actions or refusals impacting the brand adversely."
Reason: USPTO searches show trademarks associated with 'Yumpu' but no active conflicts or disputes impacting legitimacy.
User Reviews and Reputation Feedback
Score: 30
User Reviews and Reputation Feedback
"Reported unauthorized charges after free trials, refund denials, spam concerns, and aggressive upselling."
Reason: User reviews consistently highlight billing complaints and poor customer support, reducing overall reputation score.
Blacklist and Safety Checks
Score: 75
Blacklist and Safety Checks
"Security scanning services give clean results with no detected risks."
Reason: No entries on crypto scam blacklists or Google Safe Browsing warnings found, indicating no flagged malware or phishing.
Your Next Steps
-
1
Avoid entering payment information without thorough review of subscription terms.
-
2
Use ad blockers or privacy tools to limit intrusive ads when browsing the site.
-
3
Research alternative PDF publishing platforms with clearer billing policies.
Key Evidence & Citations
-
Yumpu.com User Reviews and Complaints
⤷ Details numerous complaints about billing, refunds, and service quality.
-
SimilarTech Traffic and Technology Profile for Yumpu.com
⤷ Reports traffic stats, site category, and technological infrastructure.
-
WHOIS & SSL Details for Yumpu.com
⤷ Includes domain age, registrar, and SSL validation data.
-
Crypto Scam Sniffer Report
⤷ No crypto scam blacklist entries found.
-
USPTO Trademark Status for Yumpu
⤷ Shows trademark filings and status related to the brand.
📌 More actions for Yumpu.com:
🕵🏻 Keep vetting
Run an investigation on any domain. Verify legitimacy before you pay or subscribe!
👤 Find any Person »Find and investigate any person / online identity on 7 social media platforms.
📞 Investigate Phone No. »Attribute a phone number to real-world identities, linked online accounts, carrier data, emails, etc.
Community feedback
Not rated yet
0 reviews published
Leave a review
Reviews
No public reviews yet. Be the first to share your experience.
Get answers grounded in the sourced data. Citations like will link to the evidence locker.