No API fees · Runs on your device · SRT / WebVTT parser
Subtitle format converter
Convert plain SRT and WebVTT subtitle cues without changing their text.
Local models, learning & document helpers
Choose a local model, trainable classifier or statistical helper. Inputs stay on your device; model files download only when you run a model tool.
Text & settings
Up to 64 KB · stays on your device
Analysis result
Enter your text or try a sample.
Method & limitations
This tool uses the named method. Its output includes the method and limitations.
Runs in a Web Worker. Inputs and results are cleared when you leave or choose Clear text; they are not saved in browser storage. Downloaded files remain on your device.
A guide to this tool
How to use Subtitle format converter
- Enter your text or load this tool’s sample.
- Choose the available settings and fill in a second input if this tool has one.
- Run the analysis and review the output and method notes before using it.
A sample you can try
Sample input
1 00:00:01,000 --> 00:00:03,000 This is a sample subtitle. 2 00:00:04,000 --> 00:00:06,000 Conversion happens on your device.
Sample output
WEBVTT 00:00:01.000 --> 00:00:03.000 This is a sample subtitle. 00:00:04.000 --> 00:00:06.000 Conversion happens on your device.