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Home / Wiki / Getting Started

Install the Nynch Chrome extension

Updated May 2026

You'll learn how to: Download the Nynch Chrome extension from inside Nynch and install it into your Chrome browser so it can capture LinkedIn profiles and record Google Meet calls.

Time: 5 minutes.

Prereqs: You're signed in to Nynch in Chrome. You're on a workspace plan that includes the Chrome extension (most plans do).

Why the extension matters

The Chrome extension does three things that are hard or impossible without it:

  1. Captures LinkedIn profiles into Nynch with one click, including the profile's photo, headline, current job, and location.
  2. Shows Nynch context directly on LinkedIn profile pages, so you can see relationship strength, ICP score, last contact, and deal history without leaving LinkedIn.
  3. Records and transcribes Google Meet calls, so meetings flow into Nynch as searchable transcripts with AI summaries.

If you only ever use the web app, you can skip this. But most outbound and most relationship-building happens on LinkedIn, so most users install it on day one.

Step 1: Open the Chrome extension settings card

  1. In Nynch, click the gear icon in the bottom-left of the sidebar to open Settings.
  2. Click the Integrations tab in the Settings page.
  3. Scroll to the Nynch Chrome Extension card. It has a puzzle-piece icon, the current version badge, and a Download Extension button on the right.

If the button shows Not Available instead, the extension build for your workspace hasn't been uploaded yet. Contact support.

If the button shows Demo Mode instead, you're in a demo workspace. Switch to your real workspace and try again.

Step 2: Download the extension zip

Click Download Extension.

A zip file (latest.zip) downloads to your computer. Don't open it yet, you'll need it as-is for the next step.

The card shows the version number (e.g. v2.3.1) and the Last updated date. Note these in case you need to compare against what you have installed later.

Step 3: Unzip the file

Open your downloads folder and unzip the latest.zip file you just downloaded.

  • On Windows: right-click the zip, choose Extract All, and pick a folder you'll remember (e.g. Documents\nynch-extension).
  • On macOS: double-click the zip and a folder appears alongside it. Move that folder somewhere stable, like ~/Documents/nynch-extension.

Keep this folder in a permanent location. If you delete it later, Chrome will uninstall the extension automatically.

Step 4: Open Chrome's extensions page

In Chrome, type this into the address bar exactly and press Enter:

chrome://extensions/

You can't search for the page; you have to type the URL.

Step 5: Turn on Developer Mode

In the top-right corner of the chrome://extensions/ page, there's a toggle labelled Developer mode. Flip it on.

Three buttons appear on the left side of the page once Developer mode is on: Load unpacked, Pack extension, and Update. You only need the first one.

Step 6: Load the unzipped folder

  1. Click Load unpacked in the top-left.
  2. A file picker opens. Navigate to the folder you unzipped in Step 3.
  3. Select the folder itself (not a file inside it) and click Select / Open.

A new card appears on the chrome://extensions/ page titled Nynch with a Nynch icon and the version number. The extension is now installed.

Step 7: Sign in

The extension uses your existing Nynch web session. As long as you're signed in to Nynch in another tab, the extension picks up the session automatically.

  1. Open or refresh any Nynch tab (e.g. https://app.nynch.com).
  2. Now open LinkedIn (https://www.linkedin.com).
  3. The Nynch sidebar should appear on the right side of any LinkedIn profile page.

If the sidebar doesn't appear, see troubleshooting below.

Updating the extension

When Nynch ships a new extension version, the Last updated date and version badge on the Settings card change. To update:

  1. Open Settings → Integrations → Nynch Chrome Extension.
  2. Click Download Extension again to get the latest zip.
  3. Unzip it. Replace the contents of your existing extension folder with the new files (overwrite when prompted). Don't change the folder name or location.
  4. Go back to chrome://extensions/. Find the Nynch extension card. Click the refresh icon (curved arrow) in the bottom-right of the card.
  5. Done. The version on the card should match the version on the Nynch settings page.

If you change the folder name or move it, Chrome will treat that as a new extension. You'll need to remove the old one and Load Unpacked the new location.

If something goes wrong

  • Symptom: "The Download Extension button is greyed out / shows Not Available." → Fix: Your workspace doesn't have the extension build yet. Contact support to enable it.
  • Symptom: "I can't find Developer mode on chrome://extensions/." → Fix: Developer mode is in the very top-right corner of the page. If you're on a managed Chrome (work account locked down by IT), your admin may have disabled it. Ask IT to allow developer extensions, or have them whitelist Nynch.
  • Symptom: "Load unpacked is greyed out." → Fix: Developer mode isn't on yet. Toggle it in the top-right corner first.
  • Symptom: "I selected the right folder but nothing happened." → Fix: You probably selected a file inside the folder. Go up one level in the file picker and pick the folder itself, not its contents.
  • Symptom: "Sidebar doesn't appear on LinkedIn." → Fix: Refresh the LinkedIn tab. Also make sure you're signed in to Nynch in another tab in the same Chrome profile. The extension reads your Nynch session cookie, so private/incognito windows won't work unless you've explicitly allowed the extension in incognito.
  • Symptom: "Extension says Sign In Required even though I'm signed in." → Fix: Your Nynch session expired. Sign in again to https://app.nynch.com, then refresh the LinkedIn tab. The extension reconnects automatically.
  • Symptom: "I'm on Safari, not Chrome." → Fix: The Nynch extension is Chrome-only. It works in any Chromium-based browser (Edge, Brave, Arc), but not Safari or Firefox.
  • Symptom: "Chrome warned me the extension might be unsafe." → Fix: This is expected for any extension installed via Load Unpacked rather than through the Chrome Web Store. The extension is signed by Nynch and the source is auditable inside the unzipped folder. If your security team needs a review, they can inspect the folder before you click Load Unpacked.

After install, what to do next

  1. Capture a few LinkedIn contacts. See Using the Chrome extension for the on-LinkedIn flow.
  2. Set up auto-recording for Google Meet if you want meeting transcripts. The extension prompts you to grant the recording permission the first time you join a Meet call.
  3. Pin the extension icon to the Chrome toolbar. Click the puzzle piece icon in the top-right of Chrome, find Nynch in the list, and click the pin icon. The Nynch icon then sits in your toolbar for quick access.

Related: Using the Chrome extension | Importing your network | Managing your contacts.