> ## Documentation Index > Fetch the complete documentation index at: https://help.lobstr.io/llms.txt > Use this file to discover all available pages before exploring further. # How to install the lobstr.io extension > Install the lobstr.io extension in Chrome and connect your Leboncoin, LinkedIn, or Sales Navigator account, step by step with screenshots. The **lobstr.io Account Sync** extension connects accounts such as Leboncoin, LinkedIn, and Sales Navigator to lobstr.io. No coding is needed: you only click buttons in Chrome. This guide covers **version 1.2.1** in Chrome 120 or later. Watch the one-minute video, or follow the steps below. [How to install the lobstr.io extension](https://www.loom.com/embed/1f0f0dd568bf43fd88bf30d379f45628) > **[Download the extension — version 1.2.1](https://app.lobstr.io/downloads/lobstr-account-sync.zip)** > > Download the ZIP from app.lobstr.io, then follow the steps below. > [!NOTE] > > Already using version 1.1.2? Remove it from Chrome before installing 1.2.1. Your lobstr.io accounts are kept, and their sessions keep working while valid. You need version 1.2.0 or later to add or sync an account. ## Install in Chrome **1. Download and unzip the extension** Download [lobstr-account-sync.zip](https://app.lobstr.io/downloads/lobstr-account-sync.zip), then double-click it to unzip it. You get a folder named **dist**. On Windows, right-click the ZIP and choose **Extract All**: **dist** is inside the extracted folder. Move **dist** to a place where it will stay, such as your **Documents** folder. Chrome runs the extension from this folder, so do not delete it after installation. **2. Turn on Developer mode** Copy `chrome://extensions` into Chrome’s address bar and press **Enter**. Click the **Developer mode** switch in the top-right corner. ![Chrome extensions page with the Developer mode switch highlighted in the top-right corner](https://mintcdn.com/lobstrio-8dcae32c/6Hh6y8PzYqGJBIaC/images/core-concepts/account-sync/extensions-developer-mode.png?fit=max\&auto=format\&n=6Hh6y8PzYqGJBIaC\&q=85\&s=bb348a14c2eb03d0ea81be5e697d3ef5) **3. Click Load unpacked** Three new buttons appear. Click **Load unpacked**. ![Chrome extensions page with the Load unpacked button highlighted](https://mintcdn.com/lobstrio-8dcae32c/6Hh6y8PzYqGJBIaC/images/core-concepts/account-sync/extensions-load-unpacked.png?fit=max\&auto=format\&n=6Hh6y8PzYqGJBIaC\&q=85\&s=86552f2f41145eb80e81babe550457d4) **4. Select the dist folder** In the window that opens, go to the folder where you put **dist**. Click **dist** once to select it, then click **Select**. ![macOS folder window with the dist folder selected and the Select button highlighted](https://mintcdn.com/lobstrio-8dcae32c/Bnq03sBQvyY9vD_E/images/core-concepts/account-sync/extensions-select-dist.png?fit=max\&auto=format\&n=Bnq03sBQvyY9vD_E\&q=85\&s=70ba43adbbdcea35210bc69c113ad059) **5. Check that the extension is on** The lobstr.io card appears. Check that it shows **1.2.1** and that its switch is blue. ![lobstr.io extension card in Chrome showing version 1.2.1 and its switch turned on](https://mintcdn.com/lobstrio-8dcae32c/6Hh6y8PzYqGJBIaC/images/core-concepts/account-sync/extension-installed.png?fit=max\&auto=format\&n=6Hh6y8PzYqGJBIaC\&q=85\&s=e75b9bce9ca077e2c12b94838023c147) ## Sync your account **1. Sign in to the website** In the same Chrome window, sign in to the website you want to connect, as you normally do. For Sales Navigator, make sure you can open Sales Navigator with that account. **2. Open Accounts in lobstr.io** Open [Accounts](https://app.lobstr.io/dashboard/accounts) in lobstr.io. If the page was already open, reload it so it detects the extension. Click **New account**. ![lobstr.io Accounts page with the New account button highlighted](https://mintcdn.com/lobstrio-8dcae32c/6Hh6y8PzYqGJBIaC/images/core-concepts/account-sync/app-accounts.png?fit=max\&auto=format\&n=6Hh6y8PzYqGJBIaC\&q=85\&s=4b285622d44f96809a94fa66bb38c0a1) To refresh an account you already added, click the sync icon at the start of its row instead, then go to **Approve in the extension window**. ![Account row in lobstr.io with the sync icon highlighted at the start of the row](https://mintcdn.com/lobstrio-8dcae32c/6Hh6y8PzYqGJBIaC/images/core-concepts/account-sync/app-sync-existing.png?fit=max\&auto=format\&n=6Hh6y8PzYqGJBIaC\&q=85\&s=826d7534b33c110bfdabf983d13558dc) **3. Choose the account type** Click **Add account** on the card of the website you want to connect. ![Add Accounts page in lobstr.io with the Add account button of the LinkedIn card highlighted](https://mintcdn.com/lobstrio-8dcae32c/6Hh6y8PzYqGJBIaC/images/core-concepts/account-sync/app-add-account.png?fit=max\&auto=format\&n=6Hh6y8PzYqGJBIaC\&q=85\&s=d3396a8387e6ed4997b09c533e3b2e76) **4. Click Continue to confirmation** Click **Continue to confirmation**. The extension then opens its own window to ask for your approval: lobstr.io cannot receive your session without it. ![Add a LinkedIn account window in lobstr.io with the Continue to confirmation button highlighted](https://mintcdn.com/lobstrio-8dcae32c/6Hh6y8PzYqGJBIaC/images/core-concepts/account-sync/app-continue-to-confirmation.png?fit=max\&auto=format\&n=6Hh6y8PzYqGJBIaC\&q=85\&s=06053593b5e931adc45229c7390660b8) **5. Approve in the extension window** Check the website shown in the window, then click **Confirm sync**. If Chrome asks to allow access to that website, click **Allow**. ![Extension window titled Confirm account sync for www.linkedin.com, with the Confirm sync button highlighted](https://mintcdn.com/lobstrio-8dcae32c/6Hh6y8PzYqGJBIaC/images/core-concepts/account-sync/confirm-linkedin.png?fit=max\&auto=format\&n=6Hh6y8PzYqGJBIaC\&q=85\&s=c6facbc738fbfe320ccf90173975cda0) For **LinkedIn and Sales Navigator**, a LinkedIn tab opens for a few seconds. Sign in there if asked. The tab then closes and you return to lobstr.io automatically. Leboncoin does not open this tab. Keep the lobstr.io page open until the sync finishes. Closing the extension window cancels the sync. **6. Check the result** The account shows **Synchronized** and today’s date under **Last synchronization**. If the date is old, the sync did not go through: start again. ![lobstr.io Accounts page with a LinkedIn account marked Synchronized and synced today](https://mintcdn.com/lobstrio-8dcae32c/6Hh6y8PzYqGJBIaC/images/core-concepts/account-sync/app-account-synced.png?fit=max\&auto=format\&n=6Hh6y8PzYqGJBIaC\&q=85\&s=6e73b108bd48de61cfe4070442a7b74b) For multiple accounts and expired sessions, see [Account sync](/getting-started/account-sync). ## Update the extension Extensions installed this way do not update by themselves. To install a new version: 1. Download the new ZIP and unzip it. 2. Replace your old **dist** folder with the new one, in the same place. 3. Open `chrome://extensions` and click the reload arrow on the lobstr.io card. 4. Reload lobstr.io. If you moved or deleted the old folder, click **Remove** on the lobstr.io card, then install the new **dist** folder with **Load unpacked**. ## Troubleshooting > **Chrome says the extension contains malware** > > Stop using the version Chrome blocked. Do not reinstall the old **1.1.2** ZIP. > > Developer mode does not guarantee that Chrome will accept an extension. If Chrome also blocks the current download, [contact support](https://go.crisp.chat/chat/embed/?website_id=45b5fabf-a2d0-441c-b3de-2d517bdeeac9). For Leboncoin, you can use the alternative below. > **lobstr.io cannot find the extension** > > Check that version **1.2.1** is on in `chrome://extensions`, then reload lobstr.io. The extension and lobstr.io must be open in the same Chrome profile. > > Remove older lobstr.io extensions. If you use an incognito window, switch to a regular Chrome window. > **The sync was cancelled or timed out** > > Go back to **Accounts** and start a new sync. Approve the extension window and any Chrome access request. Leave the lobstr.io page and any LinkedIn tab opened by the extension in place until the sync finishes. > > If you need to sign in to the website first, sign in, then start a new sync. > **Can I sync Leboncoin without this extension?** > > Yes. For an existing account, use **Edit cookies** in lobstr.io. To add or sync an account through the API, follow the [Sync Account API guide](https://docs.lobstr.io/docs/sync-account) with type `leboncoin-sync`. > > You can export your own Leboncoin session with [Cookie-Editor](https://cookie-editor.com/). The API expects a cookie **name/value object**, not Cookie-Editor’s raw array. Include `__Secure-Login` and, when present, `datadome`, `__Secure-Login-Lax`, and `__Secure-InstanceId`. Request headers are optional for Leboncoin. > > Cookies grant access to your account. Submit them only through the lobstr.io app or API; do not send them in chat, email, or screenshots. This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.