With a header and footer plugin (easiest)
- Install a plugin for adding code to your footer, for example WPCode (Plugins → Add New → search "WPCode").
- Go to Code Snippets → Header & Footer.
- Paste the snippet into the Footer box and save.
<script async src="https://sendshot.dev/widget.js" data-key="YOUR_PROJECT_KEY"></script>
Replace YOUR_PROJECT_KEY with the key from Project → Settings → Installation in your Sendshot dashboard.
Without a plugin
In a classic theme, paste the tag right before </body> in your child theme's footer.php. Using a child theme means a theme update won't remove it.
The people giving feedback don't need an account, so this works well for collecting client feedback on a site you built.
Check it works
Open your site. The feedback button appears in the bottom-right corner after the page has loaded. Press Cmd/Ctrl + Shift + F to open it from the keyboard, send a test report, and it shows up in your dashboard.
No button? Make sure the domain you're on is listed in the project's allowed domains.