Free audio tool

AI Subtitle Generator

Turn a transcript into clean SRT or VTT captions. Free to use online with no signup required.

OpenRouter or local fallback · no signup required

AI Subtitle workspace

Inputs, output, and actions in one focused space.

Live

Uses OpenRouter when a key is available, with a useful local fallback for quick demos.

Output
Your result will appear here.

Powered by OpenRouter or local fallback. Private inputs stay on this device unless you run an AI request.

About this tool

What is the AI Subtitle Generator?

AI Subtitle Generator is a free, browser-based audio utility for video editors, educators, podcasters, and social media teams. Use it to turn a timestamped transcript into readable SRT or WebVTT caption text. Start with an accurate transcript with timestamps or clear timing cues; LiteTools gives you editable caption blocks ready to validate against the media. There is no account wall, so you can open the page and begin immediately.

The workspace is designed for a focused task instead of a complicated editing suite. Play the captions with the final video and correct names, timing, line breaks, and speaker changes. The page explains the result before you download or copy it, helping you decide whether it fits your final workflow. Browser processing is used where the tool supports it; AI-assisted tools clearly identify when a request may be sent to the selected model provider.

Three simple steps

How it works

  1. 1

    Add an accurate transcript with timestamps or clear timing cues.

  2. 2

    Review the available controls, choose the result you need, and run the ai subtitle generator.

  3. 3

    Check the output carefully, then copy or download editable caption blocks ready to validate against the media.

Practical ideas

Popular uses

Format a transcript as SRT

Use the ai subtitle generator for this task, then review the output before adding it to your final workflow.

Create a WebVTT caption draft

Use the ai subtitle generator for this task, then review the output before adding it to your final workflow.

Clean caption blocks for a short video

Use the ai subtitle generator for this task, then review the output before adding it to your final workflow.

Common questions

AI Subtitle Generator FAQ

Is the AI Subtitle Generator free?

Yes. LiteTools lets you use this audio utility without creating an account or paying a usage fee.

What should I use with the AI Subtitle Generator?

For the most useful result, start with an accurate transcript with timestamps or clear timing cues. Play the captions with the final video and correct names, timing, line breaks, and speaker changes.

Does my input stay private?

Your draft stays in the browser unless you run an AI request. When you do, the request is sent to the configured model provider for processing, so avoid including unnecessary sensitive information.

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