About JustToolkit

JustToolkit is a collection of fast, free, and privacy-friendly online tools. Every tool runs entirely in your browser — files are never uploaded to any server.

We started with email file format tools (RPMSG, MSG, EML, winmail.dat) and expanded into Microsoft Publisher file viewing. Our goal is simple: build the tools we wished existed, and give them away for free.

Why We Built This

Most "free" online tools either upload your files to a server, require sign-up, or bury the useful features behind a paywall. We found that frustrating, so we built the opposite: tools that respect your privacy, work instantly, and stay free forever.

Our Principles

• Privacy first — Everything runs client-side in your browser. Your files never leave your device.
• No sign-up — No accounts, no emails, no tracking. Just open and use.
• Free forever — No paywalls, no premium tiers, no hidden costs.
• Real parsers — We build genuine format parsers, not wrappers around other tools.

Contact

Have feedback or a tool request? Email us at [email protected].