Read Frog

Read Frog: Browser extension that translates web pages and YouTube videos while teaching languages with spaced repetition flashcards.

Read Frog is a browser extension designed for language learners who want to study while browsing the web or watching videos. It provides full page translation, bilingual mode, and selection translation, along with dictionary definitions and word saving. Saved words automatically turn into flashcards with spaced repetition scheduling. Users can also enable bilingual subtitles on YouTube and listen to text with natural voices across more than 70 languages. The platform supports bring your own key for over 30 AI providers including OpenAI, Gemini, and DeepSeek, and it integrates with custom AI actions. It is suitable for people who want to learn languages through daily reading and viewing habits.

Read Frog at a glance

Best for: Student
Runs on: Chrome extension, Web
Pricing: Free plan US$0/month; Pro plan US$2.50/month; Ultra plan US$5.83/month
Released: April 2025
Category: AI writing tool
Website: readfrog.app

Key features

Translate full web pages and paragraphs
Show bilingual subtitles on YouTube videos
Turn saved vocabulary into flashcards
Run custom AI actions on selected text
Access natural voices in 70 plus languages
Bring your own key for 30 plus AI providers

Use it for

Learning a new language while reading foreign websites
Watching YouTube videos with side by side bilingual subtitles
Saving unfamiliar words to study via spaced repetition
Running custom AI explanations for specific sentences

Alternatives to Read Frog

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KISS Translator — It integrates local models and diverse API providers in a lightweight tool.
DeepL — Delivers accurate, enterprise-grade translations while preserving original layout and context.
NextAI Translator — Supports translation, polishing, and summarization across 55 languages.
STranslate — Provides concurrent translation comparisons and offline OCR capabilities.
LanguageTool — Detects grammar, spelling, and style errors across multiple apps and browsers.
Translumo — Combines multiple OCR engines with a machine learning model for high precision.
Bob OpenAI Translator — Translates, polishes, and corrects grammar using OpenAI and other AI models.
GPTZero — Provides industry-leading detection accuracy for major AI models like ChatGPT and Gemini.
PDFMathTranslate — Translates PDF files while preserving original layouts and math formulas.

All Read Frog alternatives