Hey everyone, I'm RocketSquirrel. I build x509Lab , a purely client-side web tool for visualizing and generating X.509 certificate chains. If you work in DevOps, Backend, or IT Infra, you know the quiet terror of a production certificate expiring because someone forgot to track it. When visualizing complex PKI trees (Root -> Multiple Intermediates -> Dozens of Leafs) in x509Lab, clicking into every single node to check its expiry date was becoming a chore. So for the v1.5.0 update, I built a visual warning system directly into the canvas nodes. Visual Expiry Badges Now, the moment you upload or generate a certificate, the node card displays a color-coded badge based on its remaining lifespan: 🟢 VALID (> 90 days): All good. 🟡 D-XX (31~90 days): Warning zone. 🟠 D-XX (< 30 days): Danger zone. A small orange dot also appears on the node header. 🔴 D-XX (<= 7 days) or EXPIRED: Critical. A bright red dot appears on the header.…