Jasonzhu1207/ZenConverter

What it solves

ZenConverter provides a private, local-first way to convert files directly on your Android device. It eliminates the need for ad-heavy, paid, or cloud-based conversion services that require you to upload your personal files to a remote server.

How it works

The app uses a foreground service to manage file processing tasks locally. When you select a file, the app routes the task to a specific engine—such as FFmpeg for media, native Android libraries for PDFs, or Tencent NCNN for AI-powered tasks—ensuring all work happens on your phone. It uses Android's Storage Access Framework to handle files securely without unnecessary permissions.

Who it’s for

It is for Android users who value privacy and want a reliable, ad-free tool to handle common file conversions, media processing, and metadata management without relying on the internet.

Highlights

• Privacy-focused: No remote uploads, no accounts, and no ads.
• Broad format support: Handles video, audio, images, PDFs, Office documents, fonts, and subtitles.
• Advanced processing: Includes AI-powered features like super-resolution upscaling and video frame interpolation.
• Local control: Offers tools for metadata removal, PDF encryption, and batch processing.
• Transparent: Clearly distinguishes between stable and experimental features with a public support matrix.