subtitle.im

subtitle.im is a Chrome extension for people who watch YouTube and want more consistent control over existing captions. Instead of adjusting the caption button every time a new video starts, viewers can choose a global preference: follow YouTube, automatically turn captions on, or automatically turn captions off. The extension manages the captions that a video already provides.

Some videos include subtitles permanently drawn into the picture. Turning on YouTube's separate caption track can then put two sets of text on screen. subtitle.im uses local OCR to detect burned-in subtitles and helps handle duplicate soft captions according to the viewer's settings. The viewer can restore captions at any time. Detection does not remove text from the video picture, and the extension does not generate, translate or download subtitles.

Caption preferences and duplicate handling are separate controls. This lets a viewer decide how captions should normally behave while keeping a separate preference for videos with text already embedded in the image. Manual caption changes apply to the current viewing. They do not silently create persistent rules for other videos or channels.

The free trial includes 10 successfully handled videos and does not require signup. Optional Pro access supports continued duplicate handling, channel rules, video exceptions and memory of confirmed caption closures. These settings are useful when the same channel or individual video needs a different caption preference from the global choice. The product is offered as a browser extension for Chrome rather than a video editing service.

A typical use starts with choosing the preferred caption behavior, opening a YouTube video and letting the extension manage existing captions. If duplicate captions are detected, handling follows the saved preferences, and the viewer remains able to bring captions back. The extension is intended for caption control during viewing. It is not a replacement for a missing subtitle track, a transcription tool, a translation tool or a way to edit burned-in subtitles out of video files.

What problem it solves

YouTube videos can show embedded subtitles and a separate caption track at the same time. subtitle.im helps viewers handle these duplicates and keep a consistent preference for existing captions.