Secure PDF Merger

Merge PDFs securely.

Sensitive documents — legal contracts, medical records, financial files — shouldn't be sent to third-party servers to be merged. PrivaPDF handles everything locally.

Merge PDFs securelyConvert PDF →

No account needed · zero uploads, verifiable in DevTools

—100% local — no server upload
—No data stored or logged
—Works with confidential documents
—No account required
—GDPR-friendly by design
privapdf.net/convert● SecurePDFcontract.pdf2.4 MBWASMYour browserlocalDOCXcontract.docx1.9 MBConverted in 1.8 s0 bytes sent to any server↓SaveNO SERVER

Don't trust us.
Verify it yourself.

Open DevTools → Network while converting. You'll see zero outbound requests. Every byte stays inside your browser tab.

—Works offline — no internet connection required
—Nothing is uploaded — ever
—Designed for sensitive documents
ZERO OUTBOUND CALLS
ElementsConsoleNetworkSources
FilterAll · XHR · JS · Wasm
NameStatusTypeSize
converter.worker.js200script48 kB
pdf.worker.wasm200wasm312 kB
✓ No requests to external servers
Powered byWebAssembly·Web Workers·pdf-lib·mammoth.js·Service WorkerAll open source · auditable in DevTools

Common questions

Is it safe to merge confidential PDFs online?

With most tools, no — your files are uploaded to their servers. With PrivaPDF, yes — all merging happens in your browser. Your confidential documents never leave your device.

Is my file uploaded to a server?

No. All processing happens entirely in your browser using WebAssembly. Your file never leaves your device.

Does it work for legal and medical documents?

Yes. Because files are never uploaded, there's no risk of confidential legal or medical information being stored or accessed by third parties.

Is it really free?

Yes. You get 5 free tool uses per day. No account or credit card required.

Related tools

Compress PDF < 100KB →Reduce PDF Size →Secure Offline PDF Compressor →Merge PDF →Compress PDF →PDF to Word →