PDF tools that never see your files
Merge, split, compress and convert PDFs entirely in your browser. Nothing is uploaded to a server; your files never leave your device.
Popular tools
See all 28 tools →Why LockerPDF
No upload
Every tool runs client-side with WebAssembly and JavaScript. Your file is processed on your machine, not ours.
No account
No sign-up, no email, no watermark on your results. Open a tool and use it.
Works offline
LockerPDF is an installable app. Once loaded, most tools keep working without an internet connection.