FluentRead FluentRead is an open-source browser AI translation plugin, focusing on an ‘immersive/native-language reading’ experience. It is an excellent alternative to the well-known translation plugin Immersive Translate.
Supports customizable real-time translation: bilingual parallel display of original and translated text, instant translation on word selection, one-click full-page translation, etc. Suitable for foreign language reading, learning, and cross-language information retrieval.

Features
- Bilingual parallel / Translation only / Original text display: Displays original and translated text side by side on the page, or shows only the translation for deeper understanding.
- Instant word-by-word translation (hover translation): Select text to show a popup with translation, definition, and copy buttons.
- Full text/page translation (floating ball or one-click): Quickly translate the entire page using a toolbar button or floating control without refreshing.
- Multi-engine support & custom engines: Integrates 20+ translation services (such as Google, DeepL, Microsoft Translator, OpenAI, etc.), and supports custom or self-deployed translation APIs.
- Translation caching and back-translation: Caches common translation results locally to reduce duplicate requests; supports back-translation verification to improve translation quality.
- Additional extensions: Some community versions/integrations support YouTube subtitle translation, cross-device sync, etc.
Bilingual parallel translation

Word selection translation
Select any text, and a red dot appears on the webpage. Hover over the dot to see the translation.

AI translation API integration
Built-in multiple AI translation APIs, also supports custom APIs. Here I am using the AI model from SiliconFlow. Go to the official website to apply for an API key, then fill in the ‘access token’ and select a model.
It is recommended to use Qwen3-related models. Choose a small model to meet translation needs. Very fast.
SiliconFlow official website:https://cloud.siliconflow.cn/i/W8tzx9BI (Free 14 yuan credit)
SiliconFlow API application tutorial:https://www.tudingai.com/sites/2003.html





