TranslateNext by CloseX
A tiny, beautiful, free, open-source, real-time website and video subtitle translation extension.
ExperimentalExperimental
Available on Firefox for Android™Available on Firefox for Android™
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About this extension
TranslateNext seamlessly integrates AI translation into your browsing workflow, making it easier than ever to enjoy content in your own language. It features real-time bilingual subtitles for videos, accurate PDF translation with layout preservation, instant text selection translation, and full-page multilingual translation—all within a clean, open-source interface.
TranslateNext is a breath of fresh air compared to traditional translators. It uses the latest large language models and vision models to truly understand context, delivering translations that feel natural and human-like.
🚀 Privacy-First & Open Source: TranslateNext is a project created and maintained by an independent developer. It's fully open-source—no hidden tracking. You can use your own API keys for full control, or simply use the built-in providers. Your data stays between you and the translation service you choose.
🎬 Video Subtitles: Watch YouTube videos in any language with real-time, bilingual subtitles.
📄 PDF Translation (Beta): Currently uses MinerU VLM to extract content from complex PDFs—tables, formulas, multi-column layouts—and displays it as clean, translated Markdown.
🌟 UI: The fluid animations, glassmorphism effects and non-intrusive floating ball make translation a joy to use.
Key Features:
Video Subtitles: Real-time bilingual subtitles for YouTube videos with customizable styles.
PDF Translation (Beta): Extract and translate complex PDFs with preserved layout using MinerU VLM.
Full Page Translation: Paragraph-by-paragraph comparison of original and translated text.
Mouse Hover Translation: Instantly translate words or paragraphs by hovering.
Text Selection Translation: Select any text on a page and get an instant translation popup.
Input Box Translation: Translate text inside any input field with a keyboard shortcut.
Floating Ball: A quick-access button for triggering translations on any page.
Multiple AI Providers: Supports major cloud-based translation services and local AI models. Bring your own API key for full control.
TranslateNext is a breath of fresh air compared to traditional translators. It uses the latest large language models and vision models to truly understand context, delivering translations that feel natural and human-like.
🚀 Privacy-First & Open Source: TranslateNext is a project created and maintained by an independent developer. It's fully open-source—no hidden tracking. You can use your own API keys for full control, or simply use the built-in providers. Your data stays between you and the translation service you choose.
🎬 Video Subtitles: Watch YouTube videos in any language with real-time, bilingual subtitles.
📄 PDF Translation (Beta): Currently uses MinerU VLM to extract content from complex PDFs—tables, formulas, multi-column layouts—and displays it as clean, translated Markdown.
🌟 UI: The fluid animations, glassmorphism effects and non-intrusive floating ball make translation a joy to use.
Key Features:
Video Subtitles: Real-time bilingual subtitles for YouTube videos with customizable styles.
PDF Translation (Beta): Extract and translate complex PDFs with preserved layout using MinerU VLM.
Full Page Translation: Paragraph-by-paragraph comparison of original and translated text.
Mouse Hover Translation: Instantly translate words or paragraphs by hovering.
Text Selection Translation: Select any text on a page and get an instant translation popup.
Input Box Translation: Translate text inside any input field with a keyboard shortcut.
Floating Ball: A quick-access button for triggering translations on any page.
Multiple AI Providers: Supports major cloud-based translation services and local AI models. Bring your own API key for full control.
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Permissions and data
Required permissions:
- Block content on any page
- Access browser tabs
- Access your data for all websites
Optional permissions:
- Access your data for all websites
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Version
- 0.1.1
- Size
- 9.98 MB
- Last updated
- 15 days ago (Feb 27, 2026)
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