Web Text Highlighter

About

Web Text Highlighter is a powerful reading and vocabulary tool designed for English learners, researchers, and language enthusiasts.

✏️ Highlight & Annotate
Select any text on any webpage to instantly bring up a floating toolbar. Choose from 5 highlight colors and 3 underline styles. Add personal notes to any highlight — a 📝 icon marks annotated text.

🔍 Idiom Auto-Detection
Automatically detects and highlights English idioms as you browse, powered by a built-in idiom database. Upload your own CSV to customize the list.

🤖 AI Explanations & Chat
Get instant AI-powered explanations for any highlighted text — meaning, usage, examples, and origin. Use the built-in Chat tab to ask your AI assistant anything, using your own API key.

📤 Export to Anki & Notion
Save highlights directly to Anki flashcards via AnkiConnect, or sync to a Notion database — one click, no copy-pasting.

🌐 Translation
Translate selected text in place with support for 10+ translation providers.

🧠 Spaced Repetition (Learning Mode)
Review saved idioms with a floating flashcard system based on spaced repetition. Press Alt+L to trigger a card, and track your progress over time.

📄 PDF Support
Open local or remote PDFs in the built-in viewer with full highlighting and idiom detection support.

🔒 Privacy First
Your data stays local. API keys are stored only in your browser's sync storage. No data is collected or sent to our servers.