Help · Installation

Install Google Maps Lead Finder (manual package)

About five minutes. You need Chrome 120 or newer on a desktop computer. The Google Maps edition is implemented and browser-tested locally; the public download opens only after the platform-policy and security review (release gate G4) is approved.

Where to download. Only from prospectchief.com/download/google-maps/. Never install a ZIP from anywhere else, and never install one whose checksum does not match.

Step 1 — Download and verify

Download prospectchief-google-maps-lead-finder-v<version>.zip. Compare its SHA-256 with the value on the download page:

# macOS / Linux
sha256sum prospectchief-google-maps-lead-finder-v0.3.13.zip

# Windows (PowerShell or Command Prompt)
certutil -hashfile prospectchief-google-maps-lead-finder-v0.3.13.zip SHA256

Step 2 — Unzip to a permanent folder

Extract the ZIP somewhere you will not delete, for example Documents/ProspectChief/google-maps-lead-finder. The folder must contain manifest.json directly. Chrome loads the extension from this folder every time it starts, so do not move it afterwards.

Step 3 — Enable Developer mode

Open chrome://extensions in a new tab and switch on Developer mode (top right).

chrome://extensions with Developer mode switched on in the top right and the Load unpacked, Pack extension and Update buttons visible.
chrome://extensions with Developer mode on

Step 4 — Load unpacked

Click Load unpacked and choose the folder from step 2. “ProspectChief – Google Maps Lead Finder” appears in the list. Pin it from the puzzle-piece menu.

The ProspectChief – Google Maps Lead Finder card in chrome://extensions showing version 0.3.13, its local extension ID, the service worker link and the Details and Remove buttons.
The loaded extension card (the ID is specific to your folder)

Step 5 — First capture

Open Google Maps, search for a category and place, and press Start in the panel. The feed scrolls at a measured pace; the status line shows “Capturing results”, “Waiting for more results” and finally “End of results”. Press Save or Export.

Google Maps Lead Finder panel after a capture: 10 businesses, 6 emails, Save, Export and Verify controls, Start and Reset search, and a results list of example local businesses.
Google Maps Lead Finder panel after a capture on Google Maps (example business data).

Troubleshooting

  • “Manifest file is missing or unreadable” — you selected the parent folder. Choose the folder that contains manifest.json.
  • Panel does not appear on Google Maps — reload the Maps tab after loading the extension. Make sure the folder was not moved or deleted.
  • Chrome shows “Disable developer mode extensions” — this is standard for manually installed extensions. Keeping Developer mode on is required.
  • Results stop increasing — Google is still loading or has reached the end; the status tells you which. Use Retry if the feed stalls, or Stop.
  • Multiple Google country domains — the package matches google.com/maps and the country domains (google.co.uk/maps, google.de/maps, …).

Updating later

Manual packages do not auto-update. See Google Maps updates.