LumaTool
Local Processing

Subtitle Translator Online

Parse SRT/VTT blocks, prepare translation JSON, edit translated text, and export subtitle files.

Runs locallyNo uploadYour input is processed in your browser.

Subtitle Translator

Parse SRT/VTT blocks, prepare translation JSON, edit translated text, and export subtitle files.

Featured Extension

YouTube Translator & Dubbing Extension

Use the free subtitle tools today and follow the extension page for on-page YouTube subtitle translation and dubbing as it becomes available.

Learn More

Examples

Translation JSON Prep

Input example 
SRT block: 1
00:00:01,000 --> 00:00:03,000
Welcome to the lesson.
Output example 
Editable translation block: {
  "index": 1,
  "start": "00:00:01,000",
  "end": "00:00:03,000",
  "source": "Welcome to the lesson.",
  "target": ""
}

Subtitle Translator processes this example in the browser and lets you inspect the result before copying it.

Bilingual Subtitle Draft

Input example 
Translated line: Welcome to the lesson.
欢迎来到本节课程。
Output example 
Bilingual output: 1
00:00:01,000 --> 00:00:03,000
Welcome to the lesson.
欢迎来到本节课程。

Subtitle Translator processes this example in the browser and lets you inspect the result before copying it.

Privacy note

This tool processes your input locally in your browser. Your text, code, file, or generated value is not uploaded to LumaTool servers.

How to use

  1. Step 1. Open the Subtitle Translator page and paste or enter your input.
  2. Step 2. Choose the action, options, or format you need.
  3. Step 3. Review validation messages before using the result.
  4. Step 4. Copy the output or download it when a download action is available.

Real-world examples

Parse SRT or VTT subtitles into editable blocks before sending text...

Parse SRT or VTT subtitles into editable blocks before sending text to a translation workflow.

Prepare translation JSON that preserves indexes, timestamps, source...

Prepare translation JSON that preserves indexes, timestamps, source text, and target text fields.

Edit translated lines manually while keeping subtitle timing intact...

Edit translated lines manually while keeping subtitle timing intact for export.

Common use cases

  • Parse SRT or VTT subtitles into editable blocks before sending text to a translation workflow.
  • Prepare translation JSON that preserves indexes, timestamps, source text, and target text fields.
  • Edit translated lines manually while keeping subtitle timing intact for export.
  • Export translated, bilingual, SRT, and VTT files for YouTube captions, course videos, and localization QA.
  • Bridge manual subtitle files with the YouTube extension workflow for polishing, TTS preview, and dubbing.
  • Parse SRT/VTT blocks, prepare translation JSON, edit translated text, and export subtitle files.

FAQ

Does this page automatically translate subtitles?

It prepares and edits translation data. Automatic translation depends on the workflow or provider you connect outside this local editor.

Does it preserve subtitle timing?

Yes. The workflow keeps indexes and timestamps while you edit translated text.

Can I export bilingual subtitles?

Yes. The helper can prepare translated and bilingual subtitle outputs for review or publishing.

What is Subtitle Translator best used for?

Subtitle Translator is useful for focused video & subtitle tools tasks where you need a quick browser-based result without switching tools.

How is my input handled?

This tool processes your input locally in your browser. Your text, code, file, or generated value is not uploaded to LumaTool servers.

Can I use the output in production work?

Yes, but review the result before applying it to production systems. LumaTool helps with utility work, validation, and formatting, but final decisions stay with you.

Which related tools pair well with this page?

The related tools section links to nearby workflows in the same locale so you can continue formatting, validating, converting, or checking related data.

Does this page work on mobile browsers?

Yes. The tool layout, examples, FAQ, and result areas are designed to work on both desktop and mobile browsers.

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