Built for developers,
by developers.
Thezer0 Tools is a free, no-login collection of utilities for developers and internet users. Every tool runs entirely in your browser — no data ever leaves your device.
What is Thezer0 Tools?
We built Thezer0 Tools because we were tired of bloated websites full of ads, sign-up walls, and tools that upload your files to unknown servers. Every utility here does its job locally — in your browser tab — and nothing more.
Whether you need to format a JSON blob, generate a UUID, compress an image, or sort a list of lines, you can do it here in seconds without friction.
Our values
Privacy first
All processing happens in your browser. We never see your files or text.
Zero friction
No accounts, no paywalls, no ads. Just open a tool and use it.
Always free
Every tool is and will remain completely free to use forever.
By the numbers
Get in touch
Have a tool suggestion, a bug report, or just want to say hi? Head over to the Contact page — we'd love to hear from you.