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Inline translation of highlighted text using state-of-the-art AI models (OpenAI, Anthropic Claude, Google Gemini). Universal Game Translator (Browser extension edition) Why did I make this? Because the default translate option in Chrome makes MANY MISTAKES with Japanese to English. Using the best AI models lets you choose quality over speed - when researching old game blogs and such, it's totally worth it. I use a text-fragment approach that lets the LLM understand the full context (all fragments are sent at once and in order), but still allows us to do a streaming translation with in-place text replacement that doesn't mess up links and images. WARNING: This extension is free and open source, but the LLMs actually cost money and generally make you put in a credit card to get an API key and charge per use. So just be aware that it can add up. Try Gemini, for example; the first million tokens per month are free. Features: - Translate selected text using the latest LLM models (OpenAI, Anthropic, Google) - In-place image translation - intelligently convert an image to use a different language with a flip control to compare original and translated - Video-frame translation - translate a paused frame on YouTube and other video pages - Text-to-Speech - Have text read aloud via ElevenLabs or Google Cloud TTS - Create Lesson - Generate detailed language breakdowns with readings, meanings, and grammar notes - Follow-up Chat - Ask questions about the translated content - Support for a secondary "Creative task", by default is explains cultural notes - Securely stores your API keys and settings locally in your browser - Nothing is sent out except the text to the LLM providers you're using - Customizable prompt templates for advanced users - Context menu integration for easy access - During translation, a little animation is shown with an option to see the text coming in - There is a way to see the last prompt/response pair in the settings, good for debugging New in V2.2.0: * Added the new image translation stuff, it requires an Open AI API key for use. It takes around 30-50 seconds, kind of experimental. * Updated to latest AI versions * Misc. fixes SAFETY: I am Seth A. Robinson, a game developer with over thirty released games and creator of many freeware apps including Universal Game Translator and Universal Game Translator: Live. This app does zero tracking or phoning home, it only communicates with the LLMs you setup. (required for translation) The full source code (MIT license) is on github, linked below.
Jun 29, 2026
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