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For Apple Silicon · macOS 14.4+

Local AI. Your Mac.
VTT to SRT & SRT to VTT Converter for Mac
Polyglot

The right subtitles.
In the right format.

Open an SRT or WebVTT file and export the format your editor or player needs. Convert locally, with no video or AI model required.

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Apple Silicon · macOS 14.4 or later · 7-day free trial

Polyglot SRT translation workspace with a prepared sample.

Polyglot 1.10 · Prepared sample project

01

Open the subtitles you have

Open a saved track from Files, or import an SRT or VTT through Translate. SRT accepts UTF-8 and UTF-16; WebVTT accepts UTF-8. Import validates the document before replacing your current workspace. Invalid timing or missing text produces an error instead of a partial import.

02

Keep the timing, review the presentation

The conversion preserves millisecond cue timing and overlap. SRT numbering is preserved within SRT; arbitrary WebVTT identifiers are retained for VTT export and receive numeric IDs in SRT. WebVTT styling, regions, positioning and inline timestamps are flattened with a notice before import.

03

Export SRT or WebVTT

Open Export, choose SRT subtitles or WebVTT subtitles, and save a new file. You can also edit wording, translate into multiple languages or explicitly shift every cue. Conversion runs without an AI model and remains free after the trial.

Before you begin.

Can I convert VTT to SRT without uploading?

Yes. File conversion happens on your Mac without a server or AI model. Check the plain subtitle output in your receiving player.

Can I translate VTT files?

Yes. Choose one or more languages and translate locally after downloading the translation model. Unlimited files and languages are included during the seven-day trial. Afterward, new translations require Pro.

Does conversion keep every style and position?

No. Output is plain timed text. WebVTT presentation is flattened after a clear import notice. ASS, embedded subtitle extraction and caption burn-in are not included.

Keep creating.

Polyglot for Mac

Make more of your files.

Subtitles, translations, transcripts and video. Right on your Mac.

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Apple Silicon · macOS 14.4 or later · 7-day free trial