Professional Reader

Professional Reader — Smart Dictionary for PDFs & Web Pages

Stop switching between your document and a dictionary. Professional Reader lets you click on any text in PDFs or web pages to instantly see context-aware translations and explanations — right where you're reading.

Built for researchers, students, and professionals who work with specialized or foreign language documents.

HOW IT WORKS

1. Browse any webpage or open a PDF
2. Click, drag, or Shift+click to select text you want to understand
3. A tooltip appears with a translation or explanation — powered by AI that reads the surrounding context
4. Want to dig deeper? Open "Detail Search" to ask follow-up questions in a multi-turn chat

That's it. No copying, no tab-switching, no interruption to your reading flow.

SUPPORTED LANGUAGES

Professional Reader supports 5 languages for both the interface and translations:

- English
- 日本語 (Japanese)
- 中文 (Chinese Simplified)
- 한국어 (Korean)
- Español (Spanish)

The AI automatically detects the language of your selected text and provides translations or explanations accordingly.

CONTEXT-AWARE INTELLIGENCE

This is not a simple dictionary lookup. When you select text, Professional Reader analyzes the surrounding sentence to understand how that word or phrase is being used. The same term can mean very different things depending on context — and Professional Reader gets it right.

DESIGNED AROUND YOUR READING FLOW

Professional Reader is built to stay out of your way. You can toggle the extension or hover highlighting on and off without leaving the page, and the settings panel can be freely repositioned to wherever suits you. The tooltip itself is resizable. Press Ctrl/Cmd+C while the tooltip is open to copy the selected text and dismiss the tooltip in one shortcut. The amount of context the AI considers is also adjustable, so you can tune it to match the material you're reading, and all your reader settings persist across reloads. Whether you click, drag, or Shift+click to select text, everything is designed to keep your reading flow uninterrupted.

WHAT YOU CAN DO

Translation Tab
- Select any text and see it translated into your preferred language
- Automatically detects the source language
- Context-aware: translations reflect the actual meaning in context, not just dictionary definitions

Meaning Tab
- Get detailed explanations of words and phrases
- Understand nuance, usage, and domain-specific meanings
- Ideal for technical terms, jargon, and specialized vocabulary

Detail Search (Chat)
- Ask follow-up questions about the selected text
- Multi-turn conversation: build on previous answers
- Responses stream in real-time
- Example: Select a technical term, then ask "How does this differ from [related term]?"

PDF Support
- Opens PDFs directly in a built-in viewer with full translation support
- Works the same as on web pages — select any text in your PDF
- Built-in zoom controls (+/- 10%, manual percent input, Ctrl+=/Ctrl+-/Ctrl+0 shortcuts) and a one-click download button
- Works on local PDFs too — guided one-time setup to enable "Allow access to file URLs" with screenshots in your language
- Text-based PDFs supported (scanned/image PDFs are detected with a warning)
- Disable the extension at any time to fall back to Chrome's native PDF viewer

Selection Methods
- Click: Select a single word
- Shift+Click: Extend selection to create a phrase
- Drag: Select any range of text

CUSTOMIZABLE SETTINGS

Access settings from the floating control panel on any page:

- Language Selector: Choose your preferred language for the UI and translations
- Hover Highlight: Toggle text highlighting on hover (useful in PDFs)
- Context Threshold: Adjust how much surrounding context the AI considers
- Enable/Disable: Turn the extension on or off per page
- Draggable Controls: Move the floating panel anywhere on the page

WHO IS THIS FOR?

- Researchers reading papers in foreign languages
- Anyone studying specialized or technical documents
- Professionals working with multilingual materials
- Language learners who want to read real-world content
- Anyone who encounters unfamiliar terms while browsing

PRICING

Free Plan — $0
- 25,000 tokens per week
- Full access to Translation, Meaning, and Detail Search
- Sufficient for casual reading and occasional lookups

Standard Plan — $1.99/month
- 250,000 tokens per week (10x the Free plan)
- Same full feature set
- Designed for daily readers and heavy users

Try Without an Account
- 5 free requests per 24 hours with no sign-up required
- Experience the full functionality before creating an account

PRIVACY

Your documents stay on your device. Professional Reader never uploads your PDFs or full page content to any server.

What is sent to our servers:
- The specific text you select (word or phrase)
- The surrounding sentence for context
- Your language preference

What is NOT sent:
- Your PDF files
- Full webpage content
- Browsing history or personal data

All communication is encrypted over HTTPS.

For full details, see our Privacy Policy:
https://professional-reader.app/legal/privacy-policy

ABOUT

Professional Reader is developed by Sekito Shinjo.
Website: https://professional-reader.app
Contact: [email protected]

For support, feature requests, or feedback, please reach out via email.