Discover why FreeConversion is the best free and private alternative to Smallpdf for merging your PDFs.
Select multiple files to join them into one.
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🔒 100% Secure • Local Processing
Last updated : May 14, 2026
Very clean merge interface
Polished pre-merge preview
Servers in Switzerland — strict jurisdiction
2 merges per day max on the free plan
Every file transits through Zürich
To merge 3 PDFs today and 2 tomorrow, you have to wait
Pro plan at $12/month to lift the limit
No 2-per-day cap: merge 50 PDFs today if you need to
Everything happens locally — no bandwidth used
No $12/month to merge a document
Smallpdf (https://smallpdf.com) is a popular tool, but it has significant limitations. The main difference with FreeConversion is privacy: unlike Smallpdf 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.
Absolutely! FreeConversion is perfect for professional documents. Since all processing happens locally in your browser, your confidential documents remain 100% private.
FreeConversion handles large files directly in your browser. The limit depends mainly on your device's memory, but files up to 100MB are processed without issues.
The free and private alternative to Smallpdf. No limits, no registration.
Compress my PDFs for free →