OpinionFetch

A CLI scraper for collecting product reviews from Ceneo and Amazon.pl using Puppeteer.

The tool lets you:

• choose a source (Ceneo or Amazon),
• provide a product ID,
• set how many reviews to collect,
• export results as one JSON file or many TXT files.

Requirements

• Node.js 18+ (recommended)
• npm
• Internet connection

Installation

npm install

Usage

Run:

node index.js

Then follow CLI prompts:

1. Select service (Ceneo / Amazon)
2. Enter product ID (e.g. B0D3658SHD or 163090037)
3. Choose number of reviews to collect
4. Choose output format

Output

Generated files are saved in:

• reviews/ceneo/ for Ceneo
• reviews/amazon/ for Amazon

1) Single JSON file

File name pattern:

• data_<PRODUCT_ID>.json

Structure:

{
  "productId": "...",
  "productName": "...",
  "engine": "Ceneo or Amazon",
  "scrapedAt": "ISO date",
  "totalReviews": 50,
  "reviews": [
    {
      "score": "0.800",
      "sentiment": "P",
      "content": "Review text"
    }
  ]
}

2) Multiple TXT files

One file per review, named like:

• <PRODUCT_NAME>_<SCORE>_<SENTIMENT>_<INDEX>.txt

Where:

• SCORE is normalized to 0.000 - 1.000
• SENTIMENT is:
  • P (positive)
  • N (negative)

Notes

• The Amazon flow intentionally waits for manual user interaction ([WAITING...]) after opening the review page. This helps handle anti-bot checks or login/captcha screens before scraping continues.
• If no more pages/reviews are available, scraping stops early.
• Website layout changes may require selector updates in index.js.

Tech Stack

• puppeteer
• puppeteer-extra
• puppeteer-extra-plugin-stealth
• inquirer
• chalk

Disclaimer

This tool is for educational purposes only. Web scraping may violate the Terms of Service of the target websites.