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Mastros WhatsApp extension iconWhatsApp · Chrome extension

WhatsApp Scraper and Group Member Export

Looking for a WhatsApp scraper? Mastros exports the WhatsApp Web chats, contacts and groups you can already see to Excel, CSV or JSON. Save contacts, group members, recent chats and loaded messages. All the work happens in your browser.

Get it on the Chrome Web StoreSee pricing

5.0 out of 5 from 47 Chrome Web Store reviews

Free to start · No sign-up · Works on any chat you can open

How it works

How to save WhatsApp Web data

Add it, open WhatsApp Web, pick a tool, and save the file.

01

Add the extension

Get WhatsApp Scraper, Media Downloader, Chat, Members Export by Mastros from the Chrome Web Store. It works in any Chrome-like browser.

02

Open WhatsApp Web

Go to web.whatsapp.com and log in. The Mastros panel shows up on the side.

03

Pick what to save

Choose Group Members, Chat Messages or Recent Contacts.

04

Save your file

Get a CSV, JSON or JSONL file. Open it in Excel, Google Sheets or your own tools.

Exporting a WhatsApp group's members to Excel

Open the group in WhatsApp Web, choose Group Members in the Mastros panel, and the list saves as CSV with each member's name, the phone number where WhatsApp shows it, and their role; the CSV opens in Excel and Google Sheets. It is the WA group export people search for as a WhatsApp group contacts export: read from the page in front of you, never from an API, and never sent to a server.

How to export a WhatsApp group members list

Web Mode only

Four tools

Each one reads only what WhatsApp Web has already put on the page.

Group Members Scraper

Web Mode

Saves everyone you can see in the group you have open.

  • Names, phone numbers (when shown) and roles
  • Reads the member list on the page
  • Counts toward your monthly profile limit
  • Open a group before you start

Chat Messages

Web Mode

Saves the messages loaded in the open chat, plus the contact card.

  • Message text, who wrote it and when
  • Includes the chat's contact card
  • Reads only messages already loaded in the chat
  • Cannot bring back deleted messages

All Recent Contacts

Web Mode

Saves the names, last messages and numbers from your chat list.

  • Name, last message, time and unread count
  • Reads the chat list on the left
  • Nothing has to be open
  • Counts toward your monthly profile limit

Media Download

Web Mode

Downloads the photos, videos and voice notes from the chat or group you have open.

  • Bulk download, not one file at a time
  • Photos, videos, voice notes and audio
  • Saved straight to your computer
  • Open the chat before you start

What you get

It works on your computer, and it never does anything on its own.

It runs in your browser

The work happens on your computer. Nothing goes to Mastros servers.

CSV, JSON and JSONL

Pick the file type you want. CSV opens in Excel and Google Sheets.

It never sends anything

No messages, no auto-replies, no group joining, no invites. It only reads what is already on screen.

Every run is saved

Each run is kept on its own, so you can come back and save the file again.

You keep what it found

If you stop a run, or you reach your monthly limit, the rows it already found stay.

Numbers stay private

You see a phone number only if WhatsApp Web shows it. Hidden numbers stay hidden.

Honest comparison

WhatsApp export options compared

Four ways get WhatsApp data into a file. WhatsApp's own Export Chat is free and official: it produces a .txt of one conversation from the phone app, and it is the right tool for a personal archive of a single chat. It has no member list, no spreadsheet and no computer version. Copying from WhatsApp Web works for a few lines. Cloud services give you a spreadsheet at the cost of sending your chats through their server.

The Mastros extension reads the group, chat or contact list you have open in WhatsApp Web and writes it as CSV, JSON or JSONL on your own computer. It never sends a message, never joins a group and never uploads anything, so the file is yours and the account stays as it was.

Every row states what each approach actually does, including where WhatsApp's own export is the better tool.
What mattersMastros extensionWhatsApp Export Chat (phone)Copy and pasteCloud export services
Group members to a spreadsheetName, number where shown, and role, as CSVMessages only, no member listOne member at a time, by handVaries by service
Messages with sender and timeOne row per message, CSV, JSON or JSONLA .txt file, one line per messageWhatever is on screen, unstructuredUsually a spreadsheet
Runs on a computerWhatsApp Web, in the browserThe export lives in the phone appWhatsApp WebTheir website
No upload to a third-party serverWhatsApp Web to your browser, directlyYou choose where the file goesStays on your machineYour chats pass through their server
Sends nothing from your accountReads only; never messages or joinsReads onlyReads onlyDepends on the service
PriceFree tier; Pro $9/mo, Scale $18/moFreeFreeUsually paid

Pricing

Plans for the WhatsApp extension

Every tool is unlocked on Free. Pro and Scale raise the monthly limits.

Free

$0/ month

Start with every tool

100 profiles / month
100 messages / month
  • Every scraper unlocked
  • No account needed

Pro

Most popular
$9/ month

Best if you export a lot

5,000 profiles / month
10,000 messages / month
  • Same tools as Free, bigger limits
  • Every tool unlocked

Scale

$18/ month

For very big jobs

100,000 profiles / month
500,000 messages / month
  • Same tools as Free, the biggest limits
  • Made for big, repeated exports

WhatsApp Free: 100 profiles + 100 messages a month. Pro is $9 a month for 5,000 profiles + 10,000 messages. Scale is $18 a month for 100,000 profiles + 500,000 messages. Scale has limits too.

Private from the start

WhatsApp Scraper, Media Downloader, Chat, Members Export by Mastros never sends your messages, contacts, phone numbers, chat names or group names to Mastros servers. The work happens in your browser.

We count how often the tool is used. Those counts never hold message text, phone numbers, names, chat titles, group titles or any WhatsApp content.

Frequently asked questions

It is a Chrome extension that saves contacts, group members, messages and media from WhatsApp Web chats you can already see. It adds a panel to web.whatsapp.com with four tools, and it saves your data as CSV, JSON or JSONL.

Mastros does not do the things that get WhatsApp accounts banned. It sends no messages, joins no groups, adds nobody, and makes no requests of its own. It reads what WhatsApp Web has already rendered in your own session. There is no API client and nothing runs in the background. What remains is your side of it: WhatsApp's Terms of Service govern how you use the file, and bulk messaging people who did not ask to hear from you is what actually gets accounts banned, whatever tool produced the list.Avoiding WhatsApp bans when exporting →

You can, and Mastros would rather say plainly where the line is than leave it implied. Exporting a group you run so you can keep records, or so you can reach members who expect to hear from you, is what this is for. Buying nothing, guessing nothing and messaging strangers in bulk because their number appeared in a group is what gets accounts banned and what anti-spam law is about: CAN-SPAM in the United States, GDPR in the EU, and equivalents elsewhere. Mastros builds the file; the sending is yours, and so is the responsibility for it.

Open the group in WhatsApp Web. Pick the Group Members tool in the Mastros panel and press save. You get names, roles and phone numbers where WhatsApp Web shows them. Choose CSV and the file opens right in Excel and Google Sheets. JSON and JSONL work too. For your chat list, use the Recent Contacts tool.

No. WhatsApp tells no one when you save a chat. The tool only reads what you can already see in your own WhatsApp Web, and it keeps the file on your computer. It sends nothing and does nothing others can see.

The Chat Messages tool saves the messages that are loaded in the open chat. WhatsApp Web loads older messages as you scroll, so scroll up until you can see the ones you want. Then save them as CSV, JSON or JSONL. It reads only what is on the page, and it cannot bring back deleted messages.

Yes. The Media Download tool saves the photos, videos and voice notes from the chat or group you have open, in bulk, straight to your computer. It saves only media your own WhatsApp Web can show you. It cannot recover deleted or view-once files.

No. It works on WhatsApp Web (web.whatsapp.com) in Chrome or a Chrome-like browser. It does not work in the phone app or the desktop app.

No. It does not connect to WhatsApp's API and it does not link to your account. It never sends, schedules, auto-replies or forwards to a list. It reads what WhatsApp Web has already put on the page.

No. You see a phone number only if WhatsApp Web shows it. Hidden numbers stay hidden. There is no way for it to pull full history or bring back deleted messages.

No. Everything it finds stays in your browser until you save the file. We only talk to our server for your account and billing, and for counts that hold no personal data. Your WhatsApp data never goes to Mastros servers.

CSV, which opens in Excel and Google Sheets. JSON, which is one tidy list. JSONL, which is one record per line and is handy for other tools.

Free gives you 100 profiles and 100 messages a month, with every tool unlocked and no account needed. Pro is $9 a month for 5,000 profiles and 10,000 messages. Scale is $18 a month for 100,000 profiles and 500,000 messages.

No. Mastros is not part of WhatsApp or Meta, and they do not back us or work with us. You are responsible for following WhatsApp's Terms of Service.

Write to admin@mastros.online with the WhatsApp extension named in the subject, or use the Support page on this website.

Reviews

What people say

5.0 out of 5 from 47 reviews of the WhatsApp extension on the Chrome Web Store. Read every review

I tested the extension and everything I tried worked smoothly chat messages exported successfully to csv, group members were well organized, and media was downloaded into a zip file i especially liked that it can find a member’s profile name when it isn’t shown in the group.
Kareem AbdelaleemMastros for WhatsAppListing
Its main limitation is important: it can only export data that WhatsApp Web has already loaded and displayed. It cannot reveal hidden phone numbers, access chats you don't have permission to view, or retrieve an entire conversation beyond the currently loaded history. It is also read-only—it doesn't send messages, add contacts, or automate WhatsApp actions.
pathan boksMastros for WhatsAppListing
I needed to pull our massive community member list into a spreadsheet for our new CRM, and this tool perfectly extracted hundreds of contacts with zero setup or messy API keys.
Niamat UllahMastros for WhatsAppListing

Please use it fairly

It is made for honest work: research, notes and running a group. Save only chats you are allowed to see. Follow WhatsApp's Terms of Service and your privacy laws. Never use the file for spam, mass messages or to bother people. admin@mastros.online

Guide

How to export a WhatsApp group members list

What WhatsApp shows about each member, and how to get the list into a spreadsheet.

Guide

How to export WhatsApp messages to CSV

The phone's .txt export, the parsing step it needs, and the WhatsApp Web shortcut around it.

Backing up a conversation? See WhatsApp chat backup. After the photos and videos? See the WhatsApp media downloader. We make one for other apps too: Telegram scraper · LinkedIn & Sales Navigator scraper