Hei.io

AI video and audio dubbing tool that translates content into 140+ languages with realistic voiceovers and auto-generated subtitles.

Verified
Quick facts
What is it AI video and audio dubbing tool that translates content into 140+ languages with realistic voiceovers and auto-generated subtitles.
Pricing Paid
Platform Web Application
Best for localizing YouTube videos for international audiences, creating multilingual marketing videos
Domain registered 2017

Data updated Aug. 15, 2026

What does Hei.io do?

Hei.io is an AI-powered platform designed to simplify video and audio translation and localization. It allows users to effortlessly dub their content into over 140 languages, offering a selection of more than 440 realistic AI voices. Beyond just translation, Hei.io also automatically generates accurate captions and subtitles, ensuring perfect synchronization with the video content. This eliminates the need for manual transcription and timing, saving significant time and effort for content creators and businesses.

The platform stands out with its advanced features, including voice cloning, which preserves the original speaker's vocal essence even when translating content into different languages. Users can upload their audio or video files, select source and target languages, and then let the AI process the content. After the initial generation, users have the flexibility to edit transcriptions and redub sections as needed before exporting their final videos in formats like MP4, MP3, and SRT. A forthcoming lip-syncing feature promises to further enhance the realism and quality of dubbed content.

Hai.io is particularly beneficial for content creators, marketing teams, and businesses aiming to reach a broader, global audience. It streamlines the process of localizing YouTube videos, creating multilingual marketing campaigns, and producing accessible product tutorials. By providing fast, accurate, and natural-sounding translations and voiceovers, Hei.io helps users overcome language barriers and expand their content's reach without the complexities and costs associated with traditional localization methods.

Key features

What makes it stand out
01
Translate audio/video into over 140 languages with 440+ AI voices
02
Automatically generate accurate captions and subtitles with synchronization
03
Clone your original voice to translate content while maintaining your vocal essence
04
Edit and redub videos as needed before exporting in various formats
05
Lip-syncing feature (coming soon) for perfectly aligned audio and visuals

Who is Hei.io for?

Who benefits most from this tool
localizing YouTube videos for international audiences
creating multilingual marketing videos
generating captions and subtitles for video content

Trust & presence

Domain Domain registered 2017

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