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Subtitle Converter

1. Upload Files
2. Select format
3. Get Files
Security & Privacy

Local Sandbox Processing

Your files are converted in the browser's sandbox environment. No data packet is ever sent to the ToolHost server.

Session Privacy

Once your conversion is complete and the tab is closed, all traces of the original and converted files are purged from your system's RAM.

Media Compatibility

Optimized Streaming

Easily convert any legacy format to WebVTT (.vtt) for native playback on platforms like novadonghua.com.

Global Media Support

Supports 20+ professional formats including Netflix Timed Text (.dfxp) and YouTube-ready .sbv files.

Technical Batch Logic

Smart ZIP Naming

Batch uploads generate a ZIP archive named specifically after the target format (e.g., srtfile.zip).

Original Filename Retention

Single file conversions keep their original names while appending the new extension for easy identification.