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ReadFrog - Open-Source AI Translation Browser Extension Tool

Author: AI小集 · Original source: AI工具集

What Is ReadFrog

ReadFrog is an open-source AI immersive translationbrowser extension tool. The tool can translate and interpret any content on the browser, supporting Chrome, Edge, and Firefox. Through features such as context-aware translation, text-selection analysis, and TTS reading, it helps users learn while reading on real web pages. ReadFrog supports 20+ AI models, stores data locally, and has open-source, customizable code.

ReadFrog

ReadFrog's Main Features

  • Immersive Bilingual Translation: Displays the translation directly beside the original paragraph, preserving the original layout, and supports free switching between bilingual comparison and translation-only modes.
  • Context-Aware Translation: The AI first reads and summarizes the entire article, then performs precise translation based on the article's topic and domain background, avoiding terminology mistranslation.
  • Smart Text-Selection Interaction: Select any word or sentence to view its translation, get detailed explanations matching your language level, or use TTS voice reading.
  • Custom AI Instructions: Supports creating exclusive translation prompts through dynamic tags such as {{selection}}、{{paragraphs}} to meet specific domain needs.
  • Batch Request Merging: Intelligently merges multiple translation requests into a single API call, saving up to 70% on API costs.
  • 20+ AI Provider Integrations: Uniformly integrates 20+ models such as OpenAI, DeepSeek, Claude, Gemini, and Grok through the Vercel AI SDK, while also supporting free translation from Google, Microsoft, and DeepLX.
  • YouTube Subtitle Translation (Beta): Translates subtitles directly in the video player, enabling language learning from video content.
  • Edge TTS Voice Reading: Provides free support for 150+ voices and 80+ languages, with speed adjustable between 0.25x and 4x.
  • Smart Content Extraction: Automatically identifies the main text of a web page, filters out ads and distracting information, and creates a clean reading environment.

How to Use ReadFrog

  • Install the Extension: Visit the ReadFrog official website https://www.readfrog.app/，下载浏览器插件，点击添加到浏览器。
  • Initial Setup: After installation, select your native language and complete the basic configuration. It is recommended to pin the icon to the browser extension bar.
  • Configure AI Providers: Go to Settings → API Providers, enable the required AI services (such as OpenAI or DeepSeek) and enter the API Key, then click Test Connection to verify availability.
  • Enable Translation: Open a foreign-language web page, click the extension icon to enable "Immersive Translation," and view the translation beside the original text.
  • Learn by Selecting Text: While reading, select words or sentences you do not understand to view instant translations, detailed explanations, or use TTS reading.
  • Adjust Parameters: Adjust the explanation granularity according to your personal language level, and switch between bilingual/translation-only modes to optimize the reading experience.

ReadFrog's Core Advantages

  • Open Source, Free, and Customizable: The code is fully open source, with no ads and no registration required. Users can self-deploy or further develop it, and local data storage ensures privacy.
  • Deep Language Learning Positioning: Unlike pure translation tools, it helps users truly "understand" rather than merely "finish reading" through grammar breakdown, complex sentence analysis, and contextual definitions.
  • Context-Aware Translation Made Free: Contextual translation that usually requires payment is fully available for free. The AI first understands the article and then translates, greatly improving the translation quality of professional content.
  • Extreme API Cost Optimization: Batch request merging technology saves up to 70% of API costs, lowering the economic barrier for users to use AI translation.
  • Flexible Access to Multiple Models: Supports free switching among 20+ mainstream AI models. Users can choose the optimal translation engine as needed, avoiding the limitations of a single model.

Comparison with Similar Competitors of ReadFrog

Comparison Dimension ReadFrog Immersive Translate
Use Case In-depth reading explanation Simple translation
Translation Quality AI translation + context awareness AI translation
Translation Engine 20+ AI models + free options 20+ engines
Deep Learning ✅ Grammar breakdown, long and difficult sentence analysis ❌ None
Price ✅ Completely free 🟡 Some features paid
Open Source ✅ Open source and customizable ❌ Closed source
Privacy Protection ✅ Local data storage 🟡 Risk of data leakage
TTS Voice ✅ Edge TTS free 150+ voices 🟡 Limited support
Subtitle Translation ✅ YouTube subtitle translation ✅ Supported
Batch Requests ✅ Save 70% of API costs ❌ None

Application Scenarios of ReadFrog

  • Language Learners: Immersively improve language proficiency through real web content, learning while reading. The AI analyzes grammar and vocabulary like a foreign teacher.
  • Academic Researchers: When reading foreign-language papers and technical documents, use context-aware translation to accurately understand professional terminology and avoid mistranslations like "Shell → seashell".
  • Cross-Border Professionals: Handle foreign-language emails, industry reports, and overseas information, quickly obtaining accurate translations and understanding the deeper meaning.
  • Developers/Technical Users: Read English technical blogs, GitHub documentation, and API manuals, maintaining layout coordination through mixed translation of code blocks and text.
  • Casual Readers: Get instant assistance when reading foreign-language novels, blogs, and forums, and practice listening and pronunciation through TTS reading.