Read Frog 陪讀蛙

mengxi-ream/read-frog

Uses an LLM for bilingual web page translation and explains words, phrases and grammar at your level, turning foreign-language browsing into language learning.

Why pick itNew in 2025 but updated frequently. Puts translation and language learning in one sidebar; bring your own OpenAI, DeepSeek or other API key.

Install

InstallChrome Web Store: search “Read Frog”

GitHub: mengxi-ream/read-frog
Website: readfrog.app
Stars: ★ 10.2k
License: GPL-3.0
Language: TypeScript
Last push: Oct 26, 2026
Category: Browser extensions

Good for

Translate web pages side by side or show the translation only
Translate selected sentences with context-aware explanations of words and grammar
Translate subtitles on YouTube, X and Netflix
Save words you meet and review them as FSRS spaced-repetition flashcards

Getting started

Search for "Read Frog" in the Chrome Web Store and install it (Edge and Firefox versions also exist)
Pick an AI provider in settings and enter your own API key, such as OpenAI or DeepSeek
Open a foreign-language page, translate it, and add words to your flashcards

Before you install

The project is under active development, so features may change.

Summarized by AI from the project docs; check the official docs before relying on it.

Similar tools

NanobrowserBrowser extensions · ★ 14.2k
Multiple AI agents operate web pages in your Chrome — comparing prices, filling forms, gathering data — using your own LLM API key.
KISS TranslatorBrowser extensions · ★ 13k
Inserts translations under each paragraph of a web page for side-by-side bilingual reading, and also translates input boxes, subtitles and selected text. Works with DeepL, Google, OpenAI-compatible APIs or local Ollama.
ChatGPTBoxBrowser extensions · ★ 10.8k
Call AI from a floating window on any page: translate selections, summarize, show answers next to search results. Supports many APIs and web-app accounts.
Page AssistBrowser extensions · ★ 8.3k
Chat with local models from Ollama, LM Studio and others in a browser sidebar, and ask questions about the current page or PDF.