The world's most important PDF merger.
Probably.
Drop PDFs here
or tap to browse · max 50 files · 200 MB each
fwip-merged.pdf · Never left your device
Need to merge hundreds of PDFs? The offline bundle handles batches of 500+ files with no size limit. $99 once.
Get Bundle →Most online PDF mergers upload your documents to a remote server. Your contracts, invoices, and personal documents pass through systems you don't control.
fwip works differently. The merging engine runs entirely in your browser. Your PDF is read from your device, processed on your CPU, and the result is saved back to your device. No server is involved. We literally cannot see your file.
Everything runs on your device using WebAssembly. Your file never touches a network.
Drop a file. Get a result. No sign-up, no email, no password.
Free in the browser. $99 once for the offline bundle. That's it. Forever.
The desktop version works with no internet connection at all.
| fwip | Smallpdf | Adobe Acrobat | iLovePDF | |
|---|---|---|---|---|
| Upload required | No | Yes | Yes | Yes |
| Account required | No | Yes | Yes | Free tier |
| Price | $15 / tool | $108/yr | $240/yr | $84/yr |
| Files leave device | Never | Always | Always | Always |
| Works offline | Yes | No | Desktop app | No |
| Batch processing | Offline bundle | Paid only | Yes | Paid only |