MyToolStash is a collection of free developer and network utilities built and maintained by an independent software developer. Every tool is designed around three principles:
Runs in your browser
All processing happens client-side with plain JavaScript. Your JSON, tokens, text, and patterns are never uploaded to a server. The only exception is the IP Lookup tool, which necessarily queries a public geolocation API with the IP address you enter — nothing else.
No signup, no friction
No accounts, no email walls, no "free tier" limits. Open a tool, use it, close the tab.
Built from real workflows
These tools come from day-to-day backend and automation development — the utilities that get reached for constantly while debugging APIs, writing cron jobs, and inspecting tokens. New tools are added as real needs come up.
Contact
Found a bug, have a tool suggestion, or want to get in touch? Email contact@mytoolstash.dev. Feedback on inaccurate results or broken tools is especially appreciated and usually fixed quickly.