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Profiles ​

Profiles allow for the customization of how the AI interacts with different languages and learning styles.

Managing Profiles ​

The Profile Manager is accessible through the Detailed Settings link in the extension's popup menu.

  • Create Multiple Profiles: Different profiles can be set up for different languages or learning goals (e.g., "Japanese (Default)", "Spanish Beginner").
  • Custom System Prompts: Tailor the AI's focus and personality. The AI can be instructed to concentrate on specific grammar points, provide varying levels of detail, or use a specific tone.
  • Language Selection: Define the source and target languages specifically for each profile.

Customizing AI Behavior ​

The System Prompt field in the Profile Editor is the most powerful tool for customization. By adjusting the prompt, it is possible to:

  • Instruct the AI to include Romaji/IPA for pronunciation.
  • Request explanations tailored to specific levels (such as JLPT levels for Japanese).
  • Control the length and complexity of the AI's explanations.

Tips for Effective System Prompts ​

Since Gemini Nano is a smaller in-device model, it requires a carefully crafted system prompt to deliver the best results. Here are some strategies for optimization:

  • Iterate with Larger Models: Start by developing and refining your prompt using a more powerful model like Gemini Pro. Once the logic and instructions are solid, adapt them for the local model.
  • Provide Exact Examples: Gemini Nano performs significantly better when shown exactly how the output should look. Include 1-2 examples of a subtitle segment followed by your desired analysis in the prompt itself.
  • Be Specific: Explicitly state the format, tone, and level of detail required. The more structure you provide, the more consistent the local AI will be.