About
Practical tools, clear boundaries
LeetTools.dev builds focused utilities for everyday file and developer workflows. When a tool is described as local, its working inputs are processed on the device; network-dependent tools may make external requests as part of their function.
Browser-first by design
Tools marked for local processing operate in your browser. Files, text, passwords, tokens, and other working inputs are not sent to LeetTools for server-side processing as part of those tool workflows.
Relevant tool pages describe known compatibility or browser-memory limits where they matter. Keep original files and verify important output with the application that will receive it.
Tools and practical guides
The tools solve the immediate task. The guides explain common compatibility problems, show browser-first workflows, and state when a desktop application is the more reliable fallback.
Privacy boundaries
Local tool processing does not mean a page makes no network requests. The production site uses site analytics, and network-oriented tools may contact third-party services for their stated function. Read the privacy information for the distinction.