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Instagram Scraper: Email Finder, Engagement Rate, Follower Export Mastros

Chrome extension by Mastros.Online · Productivity · Tools

  • Trader

A Chrome extension in Productivity · Tools with 68 users, barely installed.

Specific sites only: 5 match patterns.

What the developer says, and 5 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
68
Rating
not rated yet
Users, last 16 days
+57
Version
1.1.8
Updated in the store
2026-09-09
Published
2026-08-27
Manifest
V3
Browser access
5 permissions, 5 site patterns

How it has moved

Users
+57 since 31.08
11-68 · 9 readings
2026-09-02: released 1.0.72026-09-03: released 1.1.42026-09-04: released 1.1.72026-09-10: released 1.1.8
  1. 2026-08-3111
  2. 2026-09-0214released 1.0.7
  3. 2026-09-0419released 1.1.7
  4. 2026-09-0625
  5. 2026-09-0730
  6. 2026-09-0831
  7. 2026-09-1038released 1.1.8
  8. 2026-09-1361
  9. 2026-09-1568
Users
+57 since 31.08
11-68 · 9 readings
2026-09-02: released 1.0.72026-09-03: released 1.1.42026-09-04: released 1.1.72026-09-10: released 1.1.8
  1. 2026-08-3111
  2. 2026-09-0214released 1.0.7
  3. 2026-09-0419released 1.1.7
  4. 2026-09-0625
  5. 2026-09-0730
  6. 2026-09-0831
  7. 2026-09-1038released 1.1.8
  8. 2026-09-1361
  9. 2026-09-1568

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Specific sites only: 5 match patterns.

  • https://www.instagram.com/*
  • https://*.cdninstagram.com/*
  • https://*.fbcdn.net/*
Show the remaining 2
  • https://igexport-api.mastros.workers.dev/*
  • https://eu.i.posthog.com/*
  • Manage your downloads downloads
  • Sign you in with a Google account identity
  • See the email address of the signed-in Google account identity.email
Show the remaining 2
  • Schedule work to run later alarms
  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 1.1.8
  2. Version 1.1.7
  3. Version 1.1.4 · Asked for more permissions (10, was 8)
Show the remaining 1
  1. Version 1.0.7

What changed recently

  1. Released version 1.1.8 (was 1.1.7)
  2. Package size changed
  3. Released version 1.1.7 (was 1.1.4)
Show the remaining 8
  1. Package size changed
  2. Asked for more permissions (10, was 8)
  3. Store description rewritten
  4. Released version 1.1.4 (was 1.0.7)
  5. Package size changed
  6. Store description rewritten (127 → 131 characters)
  7. Renamed from "Instagram Scraper & Follower Export: Comments, Posts, Media by Mastros" to "Instagram Scraper: Email Finder, Engagement Rate, Follower Export Mastros"
  8. Released version 1.0.7 (was 1.0.4)

The publisher

Mastros.Online publishes 5 listings we track, 2k users between them. Listed website: mastros.online.

  1. Telegram Scraper & Chat Export: Members, Media, Video Downloader by Mastros Mastros.Online · Productivity · Tools · published 2026-03-25 942 users ★ 4.9
  2. WhatsApp Scraper, Media Downloader, Chat, Members Export by Mastros Mastros.Online · Productivity · Tools · published 2026-06-29 294 users ★ 5.0
  3. LinkedIn Scraper: Export Profiles, Jobs, Posts & Sales Navigator to Excel Mastros.Online · Productivity · Tools · published 2026-07-28 232 users ★ 5.0
Show 1 more from this publisher
  1. TikTok Scraper: Export Comments, Creators & Videos to CSV - Mastros Mastros.Online · Productivity · Tools · published 2026-09-02 15 users ★ 5.0

Like this one

Listings the catalog judges closest in what they say they do.

  1. Email Scraper for Ins Describes nearly the same job, with an established audience 20k users ★ 3.9
  2. GrowLead - Email Extractor and Scraper for IG Describes nearly the same job, smaller audience 6k users ★ 5.0
  3. Super Export Tool - All in one export tool Describes nearly the same job, smaller audience 1k users ★ 4.0
  4. InsGrow - IG automation tool Describes nearly the same job, smaller audience 1k users ★ 4.7
  5. Insta Extractor Describes nearly the same job, smaller audience 3 users (last published figure)

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

Is this your extension?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

See what the panel does

Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.