Free Tools for Makers & Developers

A growing set of free online tools to build, check, and prep your work — fast, focused, and free to use. No signup to browse, no cost to use.

llms.txt CheckerValidate your llms.txt file against the spec — errors, fixes, and a health score.Lottie PreviewPreview Lottie JSON animations online — play, loop, and inspect instantly.

Small Tools, Real Time Saved

Most jobs don't need a heavy app — they need one quick tool that does a single thing well. These free tools hand you exactly that: open a file, get the answer or the preview you need, and move on.

They're free because they're meant to be used often, not gated. Bookmark the ones you reach for and check back as the toolkit grows.

Frequently Asked Questions

Are these tools really free?
Yes — every tool here is free to use. No credit card, no trial, and no per-day cap. Just open a tool and start working.
Do I need to sign up?
No. The free tools work instantly in your browser without an account, so you can get in, do the job, and get out.
What can I use these tools for?
Quick, everyday jobs for makers and developers — previewing a Lottie animation, prepping assets, and other small tasks that would otherwise need heavier software.
Is my data private?
Where a tool processes a file, it runs locally in your browser whenever possible. For example, the Lottie preview tool never uploads your JSON to a server.