subtitle.im

Local OCR for duplicate YouTube captions

YouTube captions on or off, with local duplicate detection.

FreemiumWebProductivity

Visit website

Overview

subtitle.im manages existing YouTube captions in Chrome. Choose follow YouTube, automatically on or automatically off across videos. Local OCR detects burned-in subtitles to help handle duplicate soft captions according to your settings. Restore captions anytime. Try 10 successfully handled videos without signup; optional Pro supports continued handling, channel rules, video exceptions and memory of confirmed closures. It does not generate, translate, download or remove burned-in subtitles.

Key features

Automatic caption control
Set captions to follow YouTube, auto-open, or auto-close across videos.
Local burned-in subtitle detection
Uses OCR in the browser to detect burned-in subtitles without uploading video frames.
Duplicate caption handling
Automatically close duplicate captions, ask first, or keep them when languages differ.
Channel and video rules
Optional Pro adds saved channel rules and video exceptions alongside global preferences.
Manual override
Manual CC/C changes take priority for the current viewing without altering saved rules.

Use cases

Keep captions on or off
Automatically enable or disable YouTube captions based on your preference.
Handle burned-in subtitles
Detect burned-in subtitles and manage duplicate captions when languages differ.
Fine-grained control
Optional Pro applies saved channel rules and video exceptions for consistent caption behavior.

Pricing & limits

Verified 10/29/2026

Free trial (10 successfully handled videos)$0

Optional ProSee website

Check official pricing source

Frequently asked questions about subtitle.im

What is subtitle.im?: subtitle.im is a Chrome extension that manages existing YouTube captions, detects burned-in subtitles locally, and handles duplicate captions with separate settings.
Who is it for?: It is for YouTube viewers who want automatic caption control, especially those watching videos with burned-in subtitles in another language.
Is it free?: Yes, there is a free plan with no sign-up needed, offering 10 successfully handled videos in total. Pro plans are available for unlimited use.
Which platforms are supported?: It works in desktop Chrome as an extension.
Are video frames uploaded?: No, frame sampling and OCR run locally in your browser; video frames and subtitle text are not uploaded.