Most online PDF tools upload your documents to a server. PDFRoll doesn't. Every tool runs locally in your browser with WebAssembly, so your files never leave your device. There is no backend at all, which is also why it's free and stays free. 40+ tools: merge, split, compress, OCR, convert, sign, redact, edit. No account, no watermarks, no file size limits. Available in 9 languages.