Web Pure Tools
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Security and privacy

Web Pure Tools is designed so your files never need to leave your device. Security here is not a promise to delete later — it is a consequence of the architecture.

The model: local-first processing

For the supported local tools, all the work — compressing, merging, splitting, protecting, annotating, converting, OCR — happens inside your browser using JavaScript and WebAssembly. The file is read in your own device’s memory and the result is generated right there.

Because the file is never sent to a server, there is no central place where it could be intercepted, leaked or stored by mistake.

What leaves your device? None of the content

We do not send your files, the extracted text, or the passwords you type to protect or unlock a PDF. That data only exists in the browser tab while you use the tool, and it is gone when you close or reload the page.

PDF passwords and encryption

The protect and unlock PDF tools use AES-128 encryption, a solid standard compatible with common PDF readers. The password is applied locally and never travels over the network. For safety, we only unlock a PDF if you know its current password.

No accounts, no invasive tracking

We do not require sign up or login to use the tools. We do not sell data and we do not run third-party ads that track you across the web.

Analytics: we measure usage, never content

If we use analytics, it only measures page and tool interactions — which tools are opened and how many people visit. The contents of your files are never collected, because they never leave your browser.

Open source and auditable

  • The tools are built on open-source libraries with permissive licenses (MIT, Apache 2.0, BSD).
  • Processing runs on the client, so anyone can verify, using the browser’s developer tools, that no file is uploaded.

Honest limits of the model

Processing locally protects the content, but it does not replace common sense. No tool can stop a document from being photographed, printed or copied by someone who already has access to it. A watermark identifies the owner and discourages misuse, but it is not absolute protection.

Performance also depends on your device: very large files may be slower on older hardware. That is the fair trade-off of keeping everything on your machine.