Captioner

Captioner is a browser-based AI subtitle generator and editor designed to streamline the process of adding captions to video content. Its primary purpose is to produce accurate, time-synced subtitles automatically, then provide an intuitive interface for refining and exporting them. By handling both transcription and subtitle formatting in one place, Captioner helps creators and teams significantly reduce manual captioning time while maintaining control over quality and style.

Captioner supports direct video uploads and processes audio using AI speech recognition to generate an initial subtitle track. Users can then edit text, adjust timing, and correct speaker labels directly in the browser, without additional software. The tool typically supports multiple languages, basic styling options (such as font, size, and positioning), and common export formats like SRT, VTT, or burned-in subtitles. Its web-based workflow allows for quick iteration, easy collaboration, and consistent output across different platforms and video types.