Discover why FreeConversion is the best free and private alternative to Nitro PDF for merging your PDFs.
Select multiple files to join them into one.
Add PDFs to merge
🔒 100% Secure • Local Processing
Last updated : May 14, 2026
Solid enterprise merging since 2005
Office 365 and SharePoint integrations for enterprise
Batch mode for multiple merges
Nitro Pro at $129.99/year
Online tool requires Nitro account
Desktop suite weighs hundreds of MB
Enterprise-centric — overkill for individual needs
No $129.99/year plan just to merge a folder
No account asked
Tool built for you, not for an enterprise IT department
Nitro PDF (https://www.gonitro.com) is a popular tool, but it has significant limitations. The main difference with FreeConversion is privacy: unlike Nitro PDF which sends your files to remote servers, FreeConversion processes everything locally in your browser using WebAssembly technology.
This means your sensitive documents (contracts, resumes, bank statements) never leave your computer. Additionally, FreeConversion is 100% free with no file limits, no registration, and no ads.
Yes, our PDF compressor is completely free. No hidden fees, no registration required, and no file size limits.
Results vary by content. Image-heavy PDFs can be reduced 50-80%. Text-heavy PDFs typically see 10-30% reduction.
Absolutely! FreeConversion is perfect for professional documents. Since all processing happens locally in your browser, your confidential documents remain 100% private.
Our tool uses advanced algorithms to optimize images, remove unnecessary metadata, and reorganize the internal PDF structure for minimal size while preserving visual quality.
The free and private alternative to Nitro PDF. No limits, no registration.
Compress my PDFs for free →