Mastros — WhatsApp Group Members, Chats, Contacts Scraper (Excel/CSV)

WhatsApp scraper to export group members, contacts & messages to Excel, CSV or JSON. Read-only, client-side — no bulk sending.

WhatsApp scraper for exporting group members, recent contacts and chat messages to Excel, CSV or JSON. Scrape and export structured data directly from WhatsApp Web, entirely client-side in your browser. ━━━━━━━━━━━━━━━━━━━━━━━━ 🧩 THREE SCRAPING MODES ━━━━━━━━━━━━━━━━━━━━━━━━ • Group Members — export the visible members of an open WhatsApp group, including name, phone number and role. • Chat Messages — export the loaded message history of the current conversation, including sender, timestamp, message text and available contact information. • Recent Contacts — export names, message previews and visible phone numbers from your WhatsApp Web chat list. ━━━━━━━━━━━━━━━━━━━━━━━━ ⚙️ WEB MODE ━━━━━━━━━━━━━━━━━━━━━━━━ • Reads only the information already loaded and rendered inside WhatsApp Web. • Zero setup, no API credentials and nothing to connect. • Uses human-paced reads and resilient selectors designed for WhatsApp Web. ━━━━━━━━━━━━━━━━━━━━━━━━ 📦 EXPORT YOUR WAY ━━━━━━━━━━━━━━━━━━━━━━━━ • Excel / CSV: open directly in Excel, Google Sheets, Airtable or any spreadsheet tool. • JSON / JSONL: structured data ready for scripts, pipelines, CRMs and AI tools. ━━━━━━━━━━━━━━━━━━━━━━━━ 🔒 PRIVACY FIRST ━━━━━━━━━━━━━━━━━━━━━━━━ ✓ Read-only — no messages sent, no contacts added and no automation. ✓ Client-side — extraction and export happen in your browser. ✓ Extracted data stays on your device until you choose to export it. ✓ No analytics are collected from your message content. ✓ Only anonymous product-usage metrics may be collected. ✓ Manifest V3 extension with client-side operation. ✓ You only access chats and groups you already have permission to view. ━━━━━━━━━━━━━━━━━━━━━━━━ 👤 WHO IS THIS FOR ━━━━━━━━━━━━━━━━━━━━━━━━ Sales, CRM, recruitment, community and operations teams that need to export WhatsApp group members, organize recent contacts, back up conversations or move their own WhatsApp Web data into spreadsheets and business tools — without copying everything manually. ━━━━━━━━━━━━━━━━━━━━━━━━ 💳 PLANS ━━━━━━━━━━━━━━━━━━━━━━━━ Free to start with monthly export limits. Paid plans unlock higher limits for heavier exports — see current pricing in the extension. ━━━━━━━━━━━━━━━━━━━━━━━━ 🚀 GETTING STARTED ━━━━━━━━━━━━━━━━━━━━━━━━ 1. Install the extension and open WhatsApp Web at web.whatsapp.com. 2. Open the Mastros sidebar from the edge pill or the browser toolbar icon. 3. Open the chat or group you want to export. 4. Pick a scraping mode, run the export and download the results as Excel, CSV or JSON. ━━━━━━━━━━━━━━━━━━━━━━━━ 🔑 AUTHENTICATION INFORMATION ━━━━━━━━━━━━━━━━━━━━━━━━ No API credentials or external account connection are required. Mastros reads only the information that WhatsApp Web has already displayed in your active browser session. The extension does not use the WhatsApp API and has no background access to your account. ━━━━━━━━━━━━━━━━━━━━━━━━ ⚠️ IMPORTANT LIMITATIONS ━━━━━━━━━━━━━━━━━━━━━━━━ • Exports visible or loaded data only — hidden information is never revealed. • Phone numbers are included only when WhatsApp Web displays them. • Message exports are limited to the history currently loaded in the open conversation. • The extension works only with chats and groups you already have access to. • Web Mode only — no WhatsApp API and no background account access. ━━━━━━━━━━━━━━━━━━━━━━━━ ⚖️ COMPLIANCE ━━━━━━━━━━━━━━━━━━━━━━━━ Not affiliated with, endorsed by, or connected to WhatsApp, Meta or any Meta product. You are responsible for the lawful use of exported data and for complying with applicable privacy laws and WhatsApp’s terms. No bulk messaging, no auto-send, no auto-adding and no automation — Mastros only reads and exports.