A free, no-upload and 100% private alternative to smallpdf to shrink your PDFs.
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Last updated : February 13, 2026
Elegant and modern interface
Complete suite of PDF tools
Integration with Google Drive and Dropbox
Limit of 2 tasks per day in the free version
Pro subscription at $12/month
Mandatory server upload — privacy concerns
Sometimes aggressive compression on images
Totally free, no task limits
Absolute privacy — local WebAssembly compression
No subscription or account required
Precise control of compression level
Smallpdf (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 →