Merge PDFs Without Uploading — The Private Smallpdf Alternative
Smallpdf is one of the most popular PDF tools online — but it uploads every document to their servers for processing. BigWow is the local-first alternative: all PDF operations run in your browser using pdf-lib, with zero upload, zero server processing, and zero account required.
0 bytes uploaded vs Smallpdf's 100% server-side processing.
No 2-file-per-hour limit — BigWow has no usage caps.
No account required — unlike Smallpdf Pro at €9/month.
BigWow vs Smallpdf — Feature Comparison
| Feature | BigWow | Smallpdf |
|---|---|---|
| File upload to server | Never | Always |
| Free usage limit | Unlimited | 2 tasks/hour |
| Account required | No | For bulk ops |
| Works offline | Yes | No |
| Open source | Yes | No |
Frequently Asked Questions
Does Smallpdf upload my documents?
Yes. Smallpdf processes all documents on their servers and retains files for up to 1 hour. BigWow processes everything locally — your files never leave your device.
Does BigWow have the same 2-PDF-per-hour limit as the free Smallpdf tier?
No. BigWow has no usage caps. Since processing happens locally, there is no server cost and therefore no artificial limit.
Sources & References
- Smallpdf Privacy Policy stating files are processed on their servers and retained for 1 hour.
- ISO 32000-2:2020 PDF 2.0 standard used by pdf-lib for local processing.
Try it now — 100% free, zero upload
No account, no ads, no file size limits. Opens instantly in your browser.