Backup Chrome passwords without third-party tools
Please make sure that you’re running the latest version of Chrome browser to get Import/Export option.
Step 1: Open Chrome://flags in your Chrome.
Step 2: Find Password Import and Export option, select Enabled from the drop-down box, and then restart the Chrome browser.
Step 3: Now, open Chrome://settings/passwords page.
Step 4: Click on Export button to export/backup saved passwords. Click the Import button to restore previously saved passwords.
Step 5: Enter your Windows account password, when asked.