The everyday utilities I kept pasting my data into random websites — JSON, timestamps, regex — rebuilt to run here. Everything is processed in the browser or on my own server, and nothing leaves the network. Source lives in GitNest.
Formatting a config with credentials into a third-party website is exactly the habit these tools replace.
Each tool is a single self-contained HTML file: no external JS, works even if the CDN layer is down.
Every tool has shortcuts and a command palette entry; the mouse is optional.
Code lives in the devtools repo on GitNest.
| Tool | Invocations | Median time |
|---|---|---|
| JSON formatter | 268 | 12 ms |
| Timestamp converter | 141 | 3 ms |
| Regex tester | 87 | — |
| JWT decoder | 39 | 2 ms |
This service is one of several running on the 5457090.xyz domain. The rest of the fleet:
| Domain | Service | What it does |
|---|---|---|
| www.5457090.xyz | Main blog | Alvin's Notebook — long-form write-ups about this fleet |
| cloud.5457090.xyz | CloudHub | Private file sync and machine backup landing zone |
| cdn.5457090.xyz | StaticHub | Static asset cache for every site on the network |
| api.5457090.xyz | API gateway | Shared JSON API facade for the network's services |
| mail.5457090.xyz | MailCorner | Self-hosted mail for the 5457090.xyz domain |
| git.5457090.xyz | GitNest | Self-hosted git hosting, read-only public clones |
| lab.5457090.xyz | Lab Notebook | Weekend experiments with downloadable datasets |