Mastros - Whatsapp Scraper

What it does

WhatsApp scraper that saves group members, contacts and messages as Excel, CSV or JSON. It only reads, it runs in your browser, and it never sends messages.

Export WhatsApp group members, contacts, phone numbers and messages to Excel, CSV or JSON. Runs on WhatsApp Web. Free Chrome extension.

Turn the WhatsApp Web chats, contacts and groups you can see into one clean file. Save contacts, group members, recent chats and loaded messages as CSV, JSON or JSONL. All the work happens in your browser. Get Mastros — WhatsApp Scraper from the Chrome Web Store. It works in any Chrome-like browser. Go to web.whatsapp.com and log in. The Mastros panel shows up on the side. Get a CSV, JSON or JSONL file. Open it in Excel, Google Sheets or your own tools. Each one reads only what WhatsApp Web has already put on the page. Saves the messages loaded in the open chat, plus the contact card. Saves the names, last messages and numbers from your chat list. Downloads the photos, videos and voice…from mastros.online

• 
  WhatSharer2019 · ▲143

  Generate WhatsApp message URLs & send bulk messages easily

• 
  Rocket for WhatsApp2021 · rocketsend.io · ▲90

  WhatsApp marketing chrome extension

• 
  WA Contact Extractor2024 · wa-contact-extractor.com · ▲2

  WhatsApps Best Group Contact Number Extractor

• WC
  Web client for WhatsApp2012 · whatsapp.filshmedia.net · ▲50
• 
  WASendly – WhatsApp Contacts ExtractorJan 2026 · chromewebstore.google.com · ▲6

  Free WhatsApp group members & contacts exporter

• 
  Whatsapp Bulk Messager2025 · chromewebstore.google.com · ▲24

  Send Bulk messages directly from WhatsApp Web

• 
  Lofi Cities – Pixel-art city nights with browser-generated lofi▲319

  Endless lofi beats composed live in your browser, over pixel-art nights in Paris, Tokyo, New York, Hong Kong, Sydney, San Francisco and more. Free, no sign-up.

  Work · 25d ago · loficities.com

• 
  Smooth Recorder▲257

  Mac screen recordings that look edited when you hit stop

  Work · 19d ago · smoothrecorder.com

• 
  Figma Specs▲223

  A container for your context that lives on the Figma canvas

  Work · 3d ago · figma.com

• 
  The rarest tech books and docs you've probably never read▲190

  Work · 13d ago · readrare.com

• TL
  The load-bearing vocabulary of Claude▲710

  Life & fun · Aug 2026 · louisabraham.github.io

• 
  Hey Noah▲656

  A proactive AI executive assistant for founders

  AI · Aug 2026 · heynoah.io

• 
  Clipto MCP▲655

  Hey HN, We recently built Clipto. It’s a tool that lets you search over terabytes of video, audio, and images on your computer, without relying on the cloud. Motivation: we probably all had this similar experience, we know a moment exists in a video or audio, but finding it takes hours scrubbing the timeline. You can send all the media to process in the cloud, but it’s slow, expensive and raises privacy concerns. So we decided to build our own on-device media search engine. How it works (high level): 1. We ingest video, audio, image; normalize formats via ffmpeg; run content analysis to…

  Work · Aug 2026 · clipto.com

• 
  Simple algorithm and color space to generate diverse skin tones▲627

  Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…

  Life & fun · Aug 2026 · toneyalexander.github.io

• 
  AdAnt AI▲620

  Claude for viral, high-converting social ads

  AI · Aug 2026 · adant.ai

• 
  Astute▲606

  Automate your B2B brand going viral, with new media creators

  AI · Aug 2026 · company-app.joinastute.com