Free tools for captioning teams

Browser-based utilities for working with captions and event audio. No upload, no signup, no cost — they run entirely in your browser.

SRT to VTT converter

Convert SRT subtitle files to WebVTT format in your browser. Drop in your .srt file or paste the contents — get clean .vtt output you can copy or download. Runs entirely client-side, no upload to any server.

Transcription cost calculator

Estimate the monthly cost of captioning and transcribing live events. Compare automated speech recognition, human captioners (CART), and hybrid models, with multi-language translation factored in.

Caption readability checker

Check whether your captions meet readability best practices: words per minute, characters per line, line count per cue. Paste in your caption text or SRT/VTT content and get a per-cue readability assessment.