When LinkedIn announced they will no longer support email alerts when the certificate expires, I quickly vibe-coded the solution, but it took me a while to “productionize” it so I can actually show it to other people.

Github repo: https://github.com/ikriv/certs

The project includes the following:

• Script to manually check certificate validity (very easy to install)
• Cron job that would run daily and send you emails when certificate is close to expiration (easy to install)
• Web dashboard that shows expiration times of your certificates (medium complexity: you’d need to spin up a Docker container and change your web server’s config)