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Subtitle Editor & Converter

Edit SRT, WebVTT, ASS, SBV, LRC, and text subtitles locally with media preview, batch timing tools, quality checks, and UTF-8 export.

Subtitle text and optional media stay in this browser. Media is played from a local Object URL and is never uploaded or transcoded.

Subtitle file

Optional local media

Cue editor · 0

Quality checks

000

No built-in subtitle quality rules were triggered.

Export

ASS styles and WebVTT positioning cannot be represented in every output format. Review the exported file when converting formats.

About Subtitle Editor & Converter

Edit timing, preview locally, and deliver clean subtitle files. Edit SRT, WebVTT, ASS, SBV, LRC, and text subtitles locally with media preview, batch timing tools, quality checks, and UTF-8 export. The core workflow is designed to run in your current browser.

Key capabilities

  • Parse and export six practical subtitle and transcript formats
  • Preview captions against a local video or audio file
  • Shift, scale, split, merge, duplicate, and renumber cues
  • Find overlap, invalid timing, unsafe markup, and reading-speed problems

Useful for

  • Prepare captions for video publishing platforms
  • Repair timing drift, overlap, and long subtitle lines
  • Convert subtitle deliveries while reviewing format loss

Frequently asked questions

Is Subtitle Editor & Converter free to use online?

Yes. Subtitle Editor & Converter opens in a modern browser and does not require desktop software installation.

What is Subtitle Editor & Converter useful for?

Common use cases include Prepare captions for video publishing platforms; Repair timing drift, overlap, and long subtitle lines.

Is my input or file uploaded?

The core processing workflow is designed to run locally in the browser. Key capabilities include Parse and export six practical subtitle and transcript formats, Preview captions against a local video or audio file, Shift, scale, split, merge, duplicate, and renumber cues; account, comments, and anonymous analytics may still create normal site requests.

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