About Master Tools

Master Tools is a free online toolkit focused on practical browser-side utilities for images, documents, media, code, data, and productivity workflows.

What We Build

We build lightweight tools that solve everyday tasks directly in the browser, including image processing, PDF handling, text utilities, AI-assisted writing workflows, and media helpers.

Local-First Principle

For privacy-sensitive media tools, the product direction is local browser processing whenever possible. That means many files can be edited, converted, or composed without being uploaded to a server.

Editorial Standards

Tool pages describe supported formats, privacy boundaries, limitations, and practical use cases so users can decide whether a tool fits their workflow before uploading or processing files.