Step 1: Load Subtitle File
Step 2: Convert Format
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Optional: Preview with Video
How to Use
- Load a subtitle file (.srt, .vtt, .ass) or paste your subtitle text directly.
- Select the input format and choose your desired output format.
- Click Convert to transform the subtitle file.
- Download the converted subtitle file or copy it to clipboard.
- Optionally, load a video to preview the subtitles overlaid.
Supported Formats
SRT
SubRip Text — the most universal subtitle format. Supported by VLC, YouTube, most video players.
VTT
WebVTT — the native HTML5 subtitle format. Required for browser-based video subtitle display.
ASS / SSA
Advanced SubStation Alpha — supports rich styling. Common in anime fansubs and advanced productions.
Use Cases
- Convert SRT to VTT for HTML5 video on websites.
- Convert ASS anime subtitles to SRT for broader compatibility.
- Preview subtitle timing on your video before encoding.
- Edit subtitle text directly in the editor before converting.
- Check subtitle cues and timing in the parsed cue list.
FAQ
What subtitle formats are supported?
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This tool supports SRT (SubRip), VTT (WebVTT), and ASS/SSA (Advanced SubStation Alpha) for both input and output.
Why convert SRT to VTT?
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VTT is the native format for HTML5 video. Browsers need VTT for the <track> element, so you need to convert SRT to VTT for web use.
Are my subtitle files uploaded to a server?
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No. All conversion and preview happens entirely in your browser. Your files never leave your device.
Can I preview subtitles on my own video?
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Yes! After converting to VTT, load your video file. The subtitles will be automatically applied to the HTML5 video player.