Discover why FreeConversion is the best free and private alternative to SodaPDF 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
Canadian company (LULU Software, Montreal)
Online merge with no install
Home pricing at $5.83/month — cheaper than Adobe
Free tier capped at 1 merge per day
Files uploaded to SodaPDF servers
Active email marketing after signup
Premium plan pushes the full Soda suite
No 1-per-day quota: as many merges as needed
No signup means no marketing email
No attempt to sell you the full suite
SodaPDF (https://www.sodapdf.com) is a popular tool, but it has significant limitations. The main difference with FreeConversion is privacy: unlike SodaPDF 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 SodaPDF. No limits, no registration.
Compress my PDFs for free →