100% Client-Side Privacy Guarantee
We don't ask you to trust our word. We provide the cryptographic and networking proof that your confidential files never touch our servers.
How to Verify Zero Uploads in Chrome DevTools
Follow these 4 steps in any browser to inspect network traffic independently.
Press F12 or Cmd + Option + I on macOS to open the browser developer console.
Click on the Network tab at the top of the inspector. Check the "Fetch/XHR" filter button to isolate data transmissions.
Select an image, video, audio track, or PDF and initiate conversion. Watch the Network log during the conversion progress bar.
Notice that zero file bytes are sent to mixconvert.com or any third-party server. All CPU activity is registered strictly in your local memory thread.
Architectural Security Comparison
| Security Parameter | MixConvert (WASM) | Cloud File Converters |
|---|---|---|
| Server File Uploads | 0 Bytes (Zero Uploads) | 100% of file sent to remote cloud |
| Cloud Data Retention | Zero (Never saved to disk) | Stored on server for 1 to 24 hours |
| Third-Party Inspection Risk | Impossible (Encapsulated) | Server admins / cloud hosting access |
| Offline Operation (PWA) | Fully Supported | Non-Functional without Internet |
Open Source Codecs & Compliance
MixConvert is built upon auditable, battle-tested open-source libraries compiled directly into WebAssembly. We adhere strictly to open-source software licenses:
FFmpeg WASM
LGPL v2.1+
MozJPEG
BSD-3-Clause
pdf-lib
MIT License
docx
MIT License
Security & Privacy FAQ
How can I verify that my files are never uploaded?
Open your browser's Developer Tools (F12 or Cmd+Option+I), navigate to the Network tab, filter by 'Fetch/XHR', and convert any file. You will observe 0 outgoing POST or PUT upload requests. All decoding and encoding operations happen inside local browser RAM.
Where does MixConvert store my converted files?
MixConvert stores zero files. Both the original and converted data exist solely as temporary TypedArray allocations in your browser's volatile memory. When you click download, a local blob: URL transfers the bytes directly to your device disk. Closing the browser tab instantly deallocates all memory.
Is client-side conversion compliant with GDPR and HIPAA?
Yes. Because confidential personal data and protected health information (PHI) never leave the user's local hardware or cross network boundaries, data transmission regulations are inherently satisfied. MixConvert acts as a local calculator rather than a data processor.
What open-source components power MixConvert?
MixConvert utilizes established, peer-reviewed open-source codecs compiled to WebAssembly: FFmpeg (LGPL v2.1+), MozJPEG (BSD), libheif (LGPL v3), pdf-lib (MIT), and docx (MIT). Full source repositories are available on GitHub.