This procedure gets KeePassXC running on your computer with browser integration, using the pre-built binaries available for download from KeePassXC site.
TL;DR KeePassXC saves your passwords securely. When you double-click a URL in KeePassXC, it launches your default browser to that URL. With browser integration configured, KeePassXC automatically enters username/password credentials into web page fields.
- Download the native installer and install KeePassXC for your Windows, macOS, or Linux computer in the usual way for your platform.
- Open the KeePassXC application.
- Create a new database and give it a master key that's used to unlock the database file. This database holds entries (usernames, passwords, account numbers, notes) for all your websites, programs, etc.
- Create a few entries - enter the username, password, URL, and optionally notes about the entry.
- KeePassXC securely stores those entries in the database.
- Within KeePassXC, go to Tools->Settings (on macOS, go to KeePassXC->Preferences.)
- In Browser Integration, check Enable KeePassXC browser integration
- Right below that, click the checkbox for the browser(s) you use Leave the other options at their defaults.
- In your default web browser, install the KeePassXC Browser extension/add-on. Instructions for Firefox or Chrome
- Click the KeePassXC icon in the upper-right corner. You'll see the dialog below.
- Click the blue Connect button to make the browser extension connect to the KeePassXC application.
- Switch back to KeePassXC. You'll see a dialog (below) indicating that a request to connect has arrived.
- Give the connection a name (perhaps Keepass-Browsername, any unique name will suffice) and click OK to accept it.
- This one-time operation connects KeePassXC and your browser.
- Within KeePassXC, double-click the URL of an entry, or select it and type Ctrl+U (Cmd+U on macOS).
- Your browser opens to that URL.
- If there are username/password fields on that page, you will see the dialog below. Click Allow to confirm that KeePassXC may access the credentials to auto-fill the fields.
- Check Remember this decision to allow this each time you visit the page.