A WhatsApp scraper reads group members, contacts, messages or media from WhatsApp Web and saves them to a file. There is no official API for that on a personal account, so every real option is a browser extension working inside your own session, WhatsApp's built-in chat export, or the WhatsApp Business API for companies with a verified business account. The Mastros WhatsApp extension covers the first model: group members and contacts to CSV, JSON or JSONL (the CSV opens in Excel and Google Sheets), chat export plus a separate bulk media download, in the browser, with no phone linking beyond the one you already did for WhatsApp Web.
Best tools for extracting WhatsApp contact information
| Tool | What it exports | Where it runs | Setup | Pricing model |
|---|---|---|---|---|
| Mastros WhatsApp extension | Group members and contacts to CSV, JSON or JSONL (the CSV opens in Excel and Google Sheets), chat export, bulk media download | Chrome on web.whatsapp.com | Install, open a chat | Free tier, monthly plans (pricing) |
| WhatsApp Export chat | One chat as a text file, media optional | The WhatsApp app | Built in | Free |
| WA Download Group Phone Numbers | Group member numbers | Chrome extension | Install, paid plan | Paid only, monthly or six-month plans on their site as of August 2026 |
| WhatsSnap | Media from chats, multi-chat, date filters | Chrome extension | Install | Free and Pro tiers |
| WhatSave | Media and status saving | Chrome extension, open source | Install | Free |
| WhatsApp Business API and partners | Messages and contacts programmatically | Meta's cloud | Verified business, developer setup | Per conversation, via Meta |
| Apify actors (third-party) | Mostly public data such as group link directories | Apify cloud | Apify account | Per result plus platform credit |
The honest gaps: for media download specifically, WhatsSnap's multi-chat runs and date-range filters are ahead of Mastros today. WhatSave is free and open source, which is a real answer to anyone who wants to read the code before trusting a tool with their chats. WA Download Group Phone Numbers has the largest user base in the members category and no free tier. Mastros' case is the combination: members, contacts, chats and media in one extension, with a free tier and reviews you can read on the store.
How to use a WhatsApp scraper safely and legally
The safe pattern is the same across tools: export what you can already see in your own session, and never pair the export with bulk messaging. WhatsApp's terms prohibit bulk messaging and unauthorised data collection, and Meta bans accounts for the messaging part far more than for the reading part. Mastros sends no messages, adds nobody to groups and never runs while you are away.
Legally, the people in a group members file have rights where they live. Use the list for the purpose the group exists for (a community you run, a class, a customer group), keep it out of shared systems unless you have a basis to hold it, and never resell it. In the EU and UK a phone number is personal data; in India the DPDP Act applies the same idea. See How to avoid WhatsApp bans when exporting.
Comparison of popular WhatsApp scraper tools for marketing
For marketing teams the question is which lists you can build. Group members and contacts are the two lists a personal or Business app account can produce, and both come out of a browser extension. Anything beyond that, such as sending to those lists at scale with templates and opt-in records, is the WhatsApp Business API's job, and Meta prices it per conversation through partners. Do not expect a scraper to bridge the two; that is the combination that ends accounts.
Where to download software for WhatsApp contact scraping
From the Chrome Web Store, for the same reason as any tool that runs next to a logged-in session: you can read the permissions, the reviews and the update history before installing. The Mastros WhatsApp extension is on the Chrome Web Store. Avoid any WhatsApp scraper distributed as an APK, a downloadable executable or a modified WhatsApp client; those are the ones that steal sessions.
Is there a cloud-based WhatsApp scraper platform?
Not one that reads your chats. Cloud scrapers cannot log into your WhatsApp; the session lives on your phone and your linked devices. Apify actors and similar cloud tools read public web data, such as group invite link directories, not the inside of groups. The only cloud path into WhatsApp itself is the Business API, which is designed for sending and receiving on a business number, not for exporting other people's groups.
How to run WhatsApp data extraction for business leads on a schedule
Keep the schedule to the reading step. A weekly export of a customer group's members, diffed in Excel against last week's file, tells you who joined and who left with no risk to the account. Mastros runs when you open it; for a hands-off schedule you would need the Business API and a business number, and the data you get is your own conversations, not group rosters. There is no safe unattended way to scrape groups on a personal account, and any tool promising one is describing the thing that gets accounts banned.
Can I buy a WhatsApp scraper with bulk export features?
Yes; the paid plans of every extension above are about volume. Mastros' paid tiers raise the monthly member and message limits and are listed on the product page. Compare on the unit that matters to you: members per month, chats per run, or media size.
FAQ
What is a WhatsApp scraper?
A tool that reads group members, contacts, messages or media from WhatsApp Web and saves them to a file, instead of copying them by hand.
Can a WhatsApp scraper see numbers that are hidden?
No. WhatsApp shows a member's number to you or it does not, depending on their privacy settings and whether they are in your contacts. Tools export what is displayed.
Does exporting a group notify the members?
No. Reading a group does not send anything.
Can I export a WhatsApp group I am not in?
No. You need to be a member to see the list.
Does Mastros work with WhatsApp Business?
Yes. WhatsApp Business accounts use the same WhatsApp Web client, so the extension works the same way. See Export WhatsApp Business contacts.
What is the safest way to export a chat with media?
WhatsApp's own Export chat for one chat, or the extension: export the chat, then run Bulk Media & Links Download on the same chat for a ZIP of its media. Neither sends anything.