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Comparison

QuestPDF vs MDPI

QuestPDF and MDPI both land on Depends.

QuestPDF

Depends

Confidence: Medium

Buy if your team writes C# and needs code-driven invoices, reports, and data exports . users call it rock solid.

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MDPI

Depends

Confidence: Medium

Reasonable if you need fast, funded open-access publication and your institution accepts MDPI journals.

Read the full report

QuestPDF versus MDPI
Compare	QuestPDF	MDPI
Verdict	Depends	Depends
Best for	.NET teams generating invoices and reports	Researchers needing fast open-access publication
Who it's not for	Teams without C#/.NET developers	Tenure-track researchers building prestige CVs
Privacy	No known public vulnerabilities found in the sources reviewed.^⁷	One known incident: in August 2016 manuscript submission system logs were intercepted and copied; MDPI appears in breach databases.¹¹
Support quality	No support evidence in sources	Mixed author reports; employees warn against company
Public sentiment	Developers on Hacker News report rock-solid stability and easy layout edits, and a 4.9/5 G2 rating is cited in competitor coverage.^³	Academic forum sentiment is split: users praise the fast turnaround but heavily criticize review rigor, fees, and reputation.
Biggest gotcha	Guess: revenue-based licensing likely . free for smaller firms, paid for larger ones. Confirm before procurement.^¹	Many researchers report peers and hiring committees discount MDPI lines on a CV.¹⁵

Pick QuestPDF when

.NET teams generating invoices and reports
Developers wanting code-defined layouts
Apps needing dynamic, data-driven documents
C# shops avoiding HTML-to-PDF renderers

When QuestPDF is not a fit

Teams without C#/.NET developers
Non-technical staff wanting drag-and-drop templates
Buyers needing HTML/CSS-based PDF design workflows
Procurement teams requiring vendor security disclosures upfront

Pick MDPI when

Researchers needing fast open-access publication
Authors with grant or institutional APC funding
Interdisciplinary work without an obvious journal home
Authors whose institutions already accept MDPI titles

When MDPI is not a fit

Tenure-track researchers building prestige CVs
Anyone whose institution discounts or flags MDPI journals
Authors who cannot pay an APC out of pocket
Fields where MDPI outlets carry stigma with peers and hiring committees

Sources

QuestPDF | C# PDF Generation Libraryquestpdf.com
official
QuestPDF on GitHubgithub.com
official
QuestPDF discussion on Hacker Newsnews.ycombinator.com
review
QuestPDF vs IronPDF: Technical Comparison Guideironsoftware.com
review
PDFsharp vs QuestPDF (C# PDF Library Comparison)ironpdf.com
review
Docotic.Pdf Layout add-onbitmiracle.com
review
QuestPDF Security pagequestpdf.com
security
iTextSharp usage in academic pipelinemdpi.com
news
MDPI APC Information and FAQmdpi.com
official
MDPI Editorial Processmdpi.com
official
MDPI Submission System Logs Intercepted (2016)mdpi.com
security
Have I Been Pwned: MDPI Data Breachhaveibeenpwned.com
security
Trustpilot reviews of mdpi.comtrustpilot.com
review
MDPI AG Reviews . Glassdoorglassdoor.com
review
Actual consequences of publishing in MDPI . Redditreddit.com
review
Reviewing papers for MDPI . Academia StackExchangeacademia.stackexchange.com
review