Subtitle Converter

Convert various subtitle file formats online, supporting mutual conversion of 9 common subtitle formats, suitable for video production, translation, viewing, and other scenarios.

Supported Subtitle Formats

• SubRip (.srt): The most widely used subtitle format with good compatibility
• WebVTT (.vtt): HTML5 video standard subtitle format
• YouTube/SubViewer (.sbv): Format used by YouTube and SubViewer
• MicroDVD (.sub): Frame-based subtitle format
• SubStation Alpha (.ssa): Format supporting subtitle styling
• Advanced Sub Station Alpha (.ass): Enhanced version of SSA, supporting richer effects
• SAMI (.smi): Microsoft-developed subtitle format
• LyRiCs (.lrc): Lyrics file format
• JSON (.json): Structured JSON format subtitles

How to Use

1. Upload subtitle file
   • Click the upload area or drag files
   • Supports subtitle files up to 10MB
   • System automatically detects the original subtitle format
2. Select target format
   • Choose output format from 9 available formats
   • View detailed description of each format
3. Convert and download
   • Click the convert button to start processing
   • Shows number of subtitle entries after conversion
   • View conversion results in the preview area
   • Click the download button to save the file

Use Cases

Convert YouTube Subtitles to Universal Format

SBV subtitles downloaded from YouTube need to be used in local players. Convert to SRT format to use in most video players.

Prepare Subtitles for Web Videos

Convert SRT subtitles created for HTML5 video players to WebVTT (.vtt) format to comply with HTML5 standards.

Convert Lyrics Format

Convert subtitle files to LRC format supported by music players.

Programmatic Subtitle Processing

Convert to JSON format to obtain structured data for easy program reading and processing.

Preserve Subtitle Styles

Convert styled ASS subtitles to other editing tools, or convert to SRT format (note: style information will be lost, only text and timeline preserved).

Notes

• Complex subtitle styles may be lost during conversion, especially when converting from ASS/SSA to simple formats
• LRC format is mainly for lyrics and not suitable for video subtitles with complex dialogue
• Check timeline accuracy after conversion as some formats use different time representations
• JSON format output is structured data suitable for program processing rather than direct player use