Tero Subtitler is an open source, cross-platform, and free subtitle editing software.

Designed to prepare subtitles for any content and all major streaming services easily.

Multi-language, validation, automatic checks and much more!

More features of

Tero Subtitler

  • User-friendly and multi-language interface


  • Fully fledged editing with frame and time-based modes


  • Fast and light


  • Create/adjust/sync and translate subtitles


  • Automation [Fix Subtitles reads weird]


  • Search and replace


  • Auto-backup

Subtitling is a pleasure

A timeline with waveform, subtitles and shot changes.

List view with all the information you need, including common errors marks.

Subtitle Conversion

Tero Subtitler is a powerful subtitle conversion tool, allowing you to convert files between different formats and frame rates.

Subtitling Assistant

Tero Subtitler uses the power of whisper.cpp and its AI to automatically recognize and create subtitles from audio.

Translation Memory

Translate and reuse!

Save time translating your projects with Tero's translation memory support.

Let's take a closer look

A single license for everyone, and it's free!

You can use Tero Subtitler for work, for a hobby, for teaching, for whatever!

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