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Mastros Telegram extension iconTelegram · Chrome extension

Telegram Scraper and Group Member Export

A Chrome extension that works inside Telegram Web. Save group members, messages, contacts and shared groups, and download photos and files. Then get a CSV, JSON or JSONL file. All the work happens in your browser.

Get it on the Chrome Web StoreSee pricing

Free to start · No sign-up · Nothing to set up

How it works

How to save Telegram data

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

01

Add the extension

Get Mastros.online from the Chrome Web Store. It works in any Chrome-like browser.

02

Open Telegram Web

Go to web.telegram.org. The Mastros panel shows up on the side.

03

Pick what to save

Choose group members, chat messages, recent contacts, shared groups or files.

04

Save your file

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

One engine · No setup

Five ways to save

Each one is built for a different job, and all five work the moment you install. There are no modes to choose between and nothing to connect.

Group Members

Saves the members of one group or many groups.

  • Names, @handles, user IDs, roles, bios and phone numbers
  • Use the group you have open, or pick from your group list
  • Repeats are removed when you save more than one group
  • If a group hides its member list, it saves everyone who has posted instead

Chat Messages

Saves the messages in an open chat, with who wrote them and when.

  • Message text, sender, time, and replies or forwards
  • The same message is never saved twice
  • You choose how many messages to save

Recent Contacts

Saves the people in your latest chats.

  • Choose how many recent chats to look at
  • You can skip pinned chats and leave out bots
  • Names, @handles, user IDs and bios where Telegram has them

Mutual Groups

Finds the groups you share with someone, then saves the members.

  • Type an @handle to see the groups you share
  • Tick the shared groups you want
  • Finding and saving happen in two easy steps

Media Download

Downloads photos, videos, files and voice notes from any chat or channel you can open.

  • Photos, videos, files, audio and voice notes
  • Say how many messages to scan; each item carries its type and date
  • File names and details are kept as they were
  • Each file you download counts as one message in your monthly limit

What you get

Made for big groups, and it all happens on your computer.

It runs in your browser

No outside server touches your Telegram data. It all happens on your computer.

CSV, JSON and JSONL

Pick the file type you want. Photos and files come as one ZIP.

Nothing to set up

No keys, no extra login. It reads the Telegram Web session you are already signed into.

Big groups are fine

It handles groups with thousands of members and very long chats.

It waits when it should

If Telegram asks it to slow down, it notices, waits, then picks up where it left off.

No password, no keys

You never hand over a password, and there are no API keys to create or store.

Pricing

Same paid plans. Different free limits.

Pro and Scale are the same for WhatsApp and Telegram. Only the free plan is different. Pick a tool to see its free limits.

Free

$0/ month

Every tool, no setup

250 profiles / month
300 messages / month
  • Every tool unlocked
  • Nothing to connect
  • 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

Telegram Free: 250 profiles + 300 messages a month · WhatsApp Free: 100 + 100. Pro is $9 for 5,000 profiles + 10,000 messages. Scale is $18 for 100,000 + 500,000. Scale has limits too — it is not unlimited.

Reviews

What people say

4.9 out of 5 from 152 reviews on the Chrome Web Store.

This tool is super easy to use and exports LinkedIn profiles to Excel in just a few clicks, with clean, organised data.
Ondiek VictorMastros for LinkedIn
Works really well and saves me a lot of time when downloading Telegram videos and media. Simple, useful, and easy to use.
g ethanMastros for Telegram
Super handy extension for pulling contact lists and chat logs straight into an excel sheet without doing annoying manual copy pasting all day...
Asifur RahmanMastros for WhatsApp

Frequently asked questions

It is a Chrome extension that saves members, messages and chat details from Telegram chats you can already see on Telegram Web. It adds a panel to web.telegram.org with five ways to save, and it makes CSV, JSON or JSONL files.

Open the group in Telegram Web. Pick Group Members in the Mastros panel and start it. When it is done, save the list as CSV and it opens right in Excel and Google Sheets. JSON and JSONL work too. You can save several groups at once, and Mastros takes out the people who show up twice.

Yes, for any group or channel you are already in. Group Members reads the member list you can see. When a group hides that list from ordinary members, it saves everyone who has posted in the chat instead. It cannot open groups or channels you have not joined.

Use Recent Contacts to save the people in your latest chats, or Group Members to save a whole group. Both make CSV, JSON or JSONL files with names, @handles and user IDs, plus phone numbers where Telegram shows them.

No. Saving only reads, and it happens on your side. Telegram tells no one, and you save only what you can already see. Mastros never sends messages, never joins groups, and does nothing others can see.

No. The extension only reads, and you start it yourself. It never sends messages, adds or invites people, or joins groups. Nothing happens on its own.

No. It works on Telegram Web (web.telegram.org) in Chrome or a Chrome-like browser. It does not work in Telegram Desktop, the phone apps or other Telegram apps.

No. There is one way to save and it needs nothing from you: no API keys, no second login, no modes to pick between. It reads the Telegram Web session you are already signed into, so every tool works the moment you install it.

No. You stay signed in to Telegram Web the normal way, and the extension reads that session. We never ask for your password, and there are no Telegram API keys to create or store.

No. It can only save chats and groups you can already open in your own Telegram account.

Reading what your own signed-in Telegram account can already see, and saving it for your own records, is a different question from collecting and redistributing other people's personal data. Mastros only does the first — it cannot reach a group you have not joined. What you do with the file afterwards is governed by Telegram's Terms of Service and by privacy law where you are, GDPR in the EU and equivalents elsewhere. Mastros is not a law firm and this is not legal advice.Is Telegram scraping legal? The 2026 compliance guide →

No. There is no API ID, no API hash, no bot token and no verification code to obtain — Mastros never asks for any of them, because it does not talk to Telegram's API at all. It reads Telegram Web in the browser session you are already signed into. Every guide that has you register an application at my.telegram.org is describing a different kind of tool.Why browser exports need no Telegram API hash →

No. Everything it finds stays in your browser. We only talk to our server for your account and billing, and for counts that hold no personal data. Your Telegram 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 tools like jq. Photos and files come as one ZIP.

If Telegram asks it to slow down, it sees the message, waits the time Telegram asks for, then keeps going. A long run is also split into bounded chunks you can carry on from, so nothing hammers Telegram in one go.

Free gives you 250 profiles and 300 messages a month, with every tool unlocked. 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. Each file you download counts as one message. You need no credit card to start.

Yes. Media Download saves photos, videos, files, audio and voice notes from any chat or channel you can open. Choose how many messages to scan. The run returns each item with its type and date, so the results can be narrowed to just the media and the period you want. File names and details stay the same, and everything comes as one ZIP. Each file counts as one message in your monthly limit.

No. Mastros.online is not part of Telegram, and Telegram does not back us or work with us. You are responsible for following Telegram's Terms of Service.

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

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 Telegram's Terms of Service and your privacy laws. Never use the file for spam, to bother people or to watch them. Questions? admin@mastros.online

Just here for the files? See the Telegram video downloader. We make one for other apps too: WhatsApp scraper · LinkedIn & Sales Navigator scraper