Convert files. Without uploading them.
Your files are never sent to any server.
Everything runs entirely inside your browser — free, no sign-up required, zero data sent.
Your files never leave your device. Safe to use even with confidential or sensitive documents.
No file content or activity is ever stored. Nothing is recorded. Nothing is retained.
No behavior tracking. No ad targeting. Just a tool that works.
Image
Video
Your files never leave your browser.
No file you process on Zerosend is ever sent to an external server. All processing — PDF, image, video, audio — happens entirely within your browser using WebAssembly and browser APIs.
This means confidential documents, personal files, and sensitive data stay on your device at all times. You can verify this yourself by opening your browser's DevTools (Network tab) and confirming that no file data is transmitted.