Your certificates can live on one public page you can send to anyone.
Your link
Your credentials page lives at:
https://www.techexpo.site/u/your-username/credentials
Replace your-username with your actual username. Anyone with the link can view the page without signing in.
Control who sees it
Open Settings → Privacy and check the Show Credentials toggle: turn it off and visitors get a "hidden their credentials" error instead of your page. Keep it on before you share the link. Full details: Control who sees your activity.
Employers can verify
Certificates on the page can be checked against our certificate validator — see Verify a certificate.