DupDub is an AI voice and dubbing platform that started as a YouTube-focused Chrome extension for transcript generation and has expanded into a broader audio and video localization tool. The core Chrome extension automatically converts YouTube audio to text with high accuracy, translates video subtitles into 40+ languages, generates AI-powered video summaries, and provides text-to-speech voiceovers—all integrated seamlessly within YouTube. This makes it a valuable tool for content creators, educators, and global audiences looking to repurpose video content into written formats or localize it for international viewers. The platform prides itself on being free, processing data locally to ensure privacy and security with no external data storage. Beyond the browser extension, DupDub Lab offers a more advanced 'Talking Photos' feature that animates static images with lip-sync, multi-role dialogue, and AI avatar generation, turning photos into animated storytellers. This lab product supports multiple characters in conversation, voice integration (uploaded, recorded, or extracted from audio/video files), and effortless sharing across platforms, making it useful for content creators, artists, and marketers.