M-Resale Scraper: Export Listings, Sellers by nifty.codes

Extract product listings, seller profiles, reviews, and follower data directly from Mercari with this browser-based data collection tool. This extension automates the gathering of publicly visible marketplace information from search results, category pages, and individual product listings. Everything runs locally in your browser, and built-in monitoring features let you watch for listing changes and price updates.

Key Features
✓ Monitor listing pages for price drops, status changes, or new reviews
✓ All scraping and exports processed locally on your machine
✓ Export to CSV, Excel (XLSX), JSON, HTML Table, and Raw JSON
✓ Automatic pagination for multi-page search results and review lists
✓ Batch processing for scraping multiple product or seller URLs at once
✓ Customizable field selection and conditional formatting

What Data You Can Extract

Product Listings: Title, price, status, category, brand, size, condition, seller ID, seller URL, photo URL, country source, luxury authentication status, and listing URL.

Product Details: Full description, original price, shipping payer, shipping class, shipping fee, package dimensions (length, width, height), seller name, seller rating average, seller rating count, seller sales count, seller items count, pro seller status, all photos, likes count, created and updated dates.

Seller Profiles: Seller name, username, introduction, join date, items count, sales count, rating average, rating count, following count, follower count, cancel reviews count, cancel rate, fast shipper and fast responder badges, reliable shipper status, pro seller and international seller flags, SMS/email/Facebook verification, and KYC status.

Seller Reviews: Review type, message, date, subject, reviewer name, reviewer photo, and feedback tags.

Followers and Following: Names, usernames, profile photos, and profile URLs for both follower and following lists.

Monitoring and Alerts
Page Watcher lets you track changes on any Mercari listing or seller page and get notified when something updates. Set conditions on fields like price, status, or review count, and receive alerts via webhook or ntfy.sh when those conditions are met.

Batch Processing
Batch URL Opener allows you to queue multiple Mercari URLs and scrape them all in one session. Add URLs manually or auto-collect them from a search results page, then batch-process every link and export the combined results.

Export Formats
- CSV
- Excel (XLSX)
- JSON
- HTML Table
- Raw JSON

Perfect For
This tool is ideal for tracking secondhand market prices, analyzing seller performance, and compiling product catalog data from Mercari. It serves resellers, bargain hunters, and market analysts who need structured exports of publicly visible listing data.

Supported Regions
This extension is designed for use on the Mercari US marketplace (mercari.com) and works across all accessible regions.

Privacy and Security
All scraping and data exports are processed locally on your machine. General usage metrics are collected to help improve the extension, but no scraped data is transmitted to external servers.

Usage Notice
This extension provides tools for extracting publicly available data. Users are responsible for ensuring their use complies with applicable terms of service and local regulations. The developer provides the tool and is not liable for how it is used.

Technical Support
For assistance or questions, contact hello@nifty.codes.

Trademark
Mercari is a registered trademark of Mercari, Inc. This extension is an independent tool and is not affiliated with, endorsed by, authorized, maintained, or sponsored by Mercari, Inc.