Mono Translate Pro

Translate YouTube captions into natural, context-aware subtitles in 27 languages using your own Gemini API key.

Mono Translate Pro transforms YouTube captions into natural, context-aware subtitles designed to feel closer to careful human editing. Instead of translating isolated caption fragments, Mono Translate Pro reads available YouTube captions, rebuilds complete ideas, preserves conversational context, and produces clear subtitles that are easier to follow. KEY FEATURES • Natural, context-aware subtitle translation • Supports 27 target languages • Reconstructs fragmented YouTube captions into clearer sentences • Helps preserve speaker turns, tone, meaning, and conversational flow • Progressive translation lets you start watching without waiting for the entire video • Subtitle timing follows the original YouTube caption timeline • Separate appearance controls for original and translated subtitles • Customize font, size, weight, color, background, position, and display mode • Voice Boundary Assist helps subtitle changes follow natural speech pauses • Switch between supported Gemini models • Session-based translated-video history • Clean, responsive side-panel interface HOW IT WORKS 1. Install Mono Translate Pro. 2. Register or sign in through the official Mono Translate Pro website. 3. Link your account to the extension. 4. Add your own Gemini API key. 5. Open a YouTube video with available captions. 6. Choose your target language and begin translating. BRING YOUR OWN GEMINI API KEY Mono Translate Pro uses a Gemini API key supplied by the user. Gemini usage limits and any related API charges are managed directly by Google under the user’s Google account. Mono Translate Pro does not sell or provide Gemini API quota. ACCOUNT AND TRIAL A Mono Translate Pro account is required. Each eligible account receives one 3-day Full Pro trial without requiring a payment method. Reinstalling the extension does not reset the trial. Trial and Pro access follow the user’s account across supported browsers and devices. PRIVACY Mono Translate Pro is designed around a focused subtitle-translation workflow. • Caption content is processed only as necessary to provide translation. • Translation requests are sent to Google Gemini using the user’s own API key. • The extension does not execute remotely hosted code. • Account communication uses secure HTTPS connections. • Settings and temporary translation data are stored in the browser as required for the extension to operate. Please review the complete Privacy Policy on the official Mono Translate Pro website before using the extension. SUPPORTED LANGUAGES Mono Translate Pro supports 27 target-language profiles, including English, Vietnamese, Spanish, French, German, Italian, Portuguese, Japanese, Korean, Simplified Chinese, Traditional Chinese, Thai, Indonesian, Malay, Filipino, Hindi, Bengali, Arabic, Turkish, Russian, Ukrainian, Polish, Dutch, Swedish, Danish, Norwegian, and Finnish. REQUIREMENTS • Google Chrome version 116 or later • A Mono Translate Pro account • A user-provided Gemini API key • A YouTube video with available captions • Internet access for account verification and Gemini translation Mono Translate Pro is an independent product and is not affiliated with, endorsed by, or sponsored by Google, Gemini, YouTube, or Chrome. Support: monotranslatepro@gmail.com Website: https://monotranslatepro.com