About

About PrivaPDF

PrivaPDF is a browser-based PDF converter and toolkit. Every conversion, merge, compression, and signature happens entirely on your device. No file ever leaves your browser. The mission is straightforward: give people professional-grade PDF tools without forcing them to surrender their documents to a remote server.

Why we built this

Most online PDF converters require you to upload your document to a remote server. That means your tax returns, medical records, legal contracts, and internal business reports are transmitted to — and temporarily stored on — infrastructure you do not control. Some services retain files for hours or days. Others use uploaded documents to train machine-learning models. Even those that delete files immediately still expose your data in transit.

We built PrivaPDF because that trade-off is unnecessary. Modern browsers support WebAssembly, which makes it possible to run the same heavy processing that used to require a server directly on the client. There is no technical reason to upload a PDF for conversion in 2026. We decided to prove it.

How it works

PrivaPDF uses WebAssembly (Wasm) to run document-processing libraries at near-native speed inside your browser tab. When you select a file, it is read into memory locally using the browser's File API. The Wasm module processes the file, produces the output, and hands it back to you as a download. At no point does any network request carry your file data.

• WebAssembly processing — compiled C/C++ libraries execute in a sandboxed environment within the browser, delivering speed comparable to native desktop applications.
• Progressive Web App (PWA) — PrivaPDF installs on your device and works fully offline. Once cached, you can convert PDFs on a plane, in a hospital, or on an air-gapped workstation with no internet connection at all.
• No backend servers — there is no upload endpoint. The application is a static site served from a CDN. You can verify this yourself by opening DevTools > Network and watching for outbound requests during a conversion. You will see none.

Our privacy commitment

Privacy claims are easy to make and hard to verify. We designed PrivaPDF so that our claims are independently verifiable by anyone with a web browser:

• Zero file uploads — open your browser's Network tab before converting a file. No request containing file data will appear. Ever.
• Zero tracking — we do not use analytics scripts, fingerprinting libraries, or third-party trackers. Page loads are served from a static CDN with no server-side logging of user behavior.
• Verifiable architecture — because the entire application runs client-side, its behavior is transparent. The source code executing in your browser is the same code that produces your converted files. There is no hidden server-side component.

Who it's for

PrivaPDF is built for anyone who handles documents that should not be uploaded to third-party servers:

• Legal professionals — contracts, NDAs, court filings, and privileged communications that must remain confidential under attorney-client privilege.
• Healthcare workers — patient records, lab results, and insurance documents protected by HIPAA and equivalent regulations worldwide.
• Finance professionals — tax filings, bank statements, financial models, and audit reports that contain sensitive personal or corporate data.
• Government and public-sector employees — classified or sensitive documents that cannot leave approved systems.
• Anyone who values privacy — you should not have to trust a random website with your personal documents just to convert a file format.