A handy stack of developer tools
Pillowstack gathers the small utilities you reach for every day — format JSON, do date math, decode cron — into one fast place. No signup, and the data you paste into a tool never leaves your browser.
- ✓ 100% client-side
- ✓ no account needed
- ✓ works offline
// the tools
- { }
JSON Formatter
Open →Paste raw JSON to pretty-print it, minify it, or catch exactly where it breaks.
- › Pretty-print, 2-space indent
- › One-click minify & copy
- › Inline parse-error messages
- Δt
Date Diff Calculator
Open →Add or subtract time from now, or measure the exact gap between two dates.
- › Live, calendar-aware offsets
- › Duration between two dates
- › ISO 8601 + relative output
- ٭٭
Crontab Builder
Open →Build a five-field cron expression and read back what it actually does.
- › Presets & field editor
- › Plain-English description
- › Next five run times
// the principles
⌂
Client-side
Every tool runs in your browser. Nothing you paste is ever uploaded.
∅
No accounts
No signup and no setup. Just open a tool and use it.
⤓
Offline-ready
Loads once, then keeps working without a connection.