Review Sentiment Analyzer
Analyze customer reviews for sentiment and extract topics — pure JS sentiment analysis with no AI or network calls. Built-in lexicon of 100+ positive/negative words, negation handling ('not good'), per-review score, sentiment label, star rating distribution, average star rating, mismatch detector (5 stars but negative text), top-5 topics, top-20 word frequency, filter, CSV export, history (localStorage), shareable URL. 100% client-side.
Analyze customer reviews for sentiment and extract topics — pure JS sentiment analysis with no AI or network calls. Built-in lexicon of 100+ positive/negative words, negation handling ('not good'), per-review score, sentiment label, star rating distribution, average star rating, mismatch detector (5 stars but negative text), top-5 topics, top-20 word frequency, filter, CSV export, history (localStorage), shareable URL. 100% client-side. Everything runs locally in your browser — your data never leaves your device.
How to use
- Enter your input in the tool above.
- Adjust any options to your preference.
- Use the Copy or Download buttons to save the result.
- Everything happens locally — your data never leaves your browser.