Text Sentiment & Polarity Analyzer
Analyze text sentiment, emotional valence, and keyword polarity 100% in browser memory.
100% Client-Side · In-Memory Only
Interactive Tool Workspace
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How to Use Text Sentiment & Polarity Analyzer
- Paste customer reviews, feedback, social media messages, or support tickets into the editor.
- View the real-time sentiment determination: Positive, Negative, or Neutral.
- Examine the normalized compound polarity score ranging from -1.0 (most negative) to +1.0 (most positive).
- Review detected positive and negative keywords with their individual sentiment weights.
Features & Guarantees
- Fast lexicon-based sentiment analysis running entirely inside browser memory.
- Calculates normalized polarity and compound valence scores without external API calls.
- Categorizes positive and negative keywords for clear explanatory insight.
- Completely private: customer reviews and feedback are never uploaded to any cloud service.
Frequently Asked Questions
How does browser-based sentiment analysis work?
It tokenizes the text and evaluates individual words and valence modifiers against a curated sentiment lexicon, computing a normalized polarity score.
Can I use this for confidential customer feedback?
Yes. All processing executes 100% locally in your browser memory, ensuring compliance with strict privacy and data residency policies.