> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bibigpt.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Free Online Subtitle Converter

> Free online subtitle format converter by BibiGPT. Convert between SRT, VTT, and TXT formats instantly in your browser. No upload, no signup, 100% private.

## Overview

BibiGPT offers a free online subtitle format converter that lets you convert between SRT (SubRip), VTT (WebVTT), and TXT (plain text) formats with one click. All conversion happens locally in your browser — files never leave your device.

## Pain Point

You downloaded subtitles from YouTube in VTT format but need SRT for Premiere Pro. Online converters either require file uploads or account sign-ups — finding a reliable, truly free tool is frustrating.

## Key Features

* Auto-detects input subtitle format (SRT, VTT, or plain text) — no manual selection needed
* Precise timestamp conversion between SRT and VTT with zero precision loss
* Drag-and-drop file upload or paste subtitle text directly
* One-click copy to clipboard or download as file
* Full Unicode support including Chinese, Japanese, Korean, and Arabic subtitles

## Highlights

Millisecond-fast conversions processed entirely in your browser. No waiting for uploads or server processing. Works on any device with a browser.

## Use Cases

* Video editors: Convert subtitles to formats required by Premiere, DaVinci Resolve, and other editing software
* YouTubers: Convert downloaded YouTube subtitles for other video platforms
* Translators: Quickly switch between subtitle formats to fit various translation workflows

## Tips

* Simply paste subtitle text and the tool auto-detects the format — no manual selection needed
* The tool preserves all timing information precisely when converting between timed formats

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**Try it now**: [Free Online Subtitle Converter](https://bibigpt.co/features/free-online-subtitle-converter)

**Upgrade to Pro**: Unlock unlimited features → [View Pricing](https://bibigpt.co/pricing)

## Related Features

<CardGroup>
  <Card title="Smart Subtitle Segmentation" href="/en/function-usage/platform-function/smart-subtitle-segmentation" />

  <Card title="Custom Transcription Engine" href="/en/function-usage/integration-extension/custom-transcription-engine" />

  <Card title="Free Speech to Text Online" href="/en/function-usage/platform-function/free-speech-to-text-online" />
</CardGroup>