Dungeon Master Studio
Built by Dungeon Masters, for Dungeon Masters.
A world building platform with sensible guardrails — designed to keep you creating games, not fiddling with fonts. Your data lives in your browser. You own it. Always.
DM First. Always.
We built this for our own group. Then we opened it up.
🔒 Your Data, Your Browser
Everything you create — monsters, items, packs — is stored directly in your browser. No server holds your campaign. No account required, no data harvested. You own it entirely.
📤 Take It With You
Any entry in your Grimoire can be exported as clean, human-readable JSON. Share it with other DMs, import it into Foundry VTT, or keep a backup. Your content is never locked in.
🎯 World Building, Not Font Fiddling
Sensible guardrails keep you focused on what matters — building encounters, crafting items, and running great games. We handle the formatting so you can handle the storytelling.
🎲 By the Table, For the Table
Dungeon Master Studio started as an internal tool for our own game group. Every feature exists because a real DM needed it at a real table. No feature bloat, no enterprise nonsense.
❤️ Patreon Powered
We're community supported through Patreon. Our roadmap is shaped by the people actually using the tools — not investors or ad revenue. Support the platform, shape what gets built next.
🤝 Share With Players
Pack up your custom items and monsters and hand them off to your players. They can import your packs to access homebrew content their DM has created — spells, items, and more.
What's In the Studio
Tools built for actual game prep. More on the way.
🐉 1e → 5.5e Monster Converter
Convert 1st Edition D&D monsters to 5th Edition with intelligent stat calculations. AC, HP, Challenge Rating, ability scores — all handled automatically using official DMG guidelines.
✓ Free for all users
📚 Grimoire
Your personal library. Store converted monsters, custom magic items, and homebrew content. Browse by CR, type, or rarity. Everything saved locally in your browser — instant, private, yours.
✓ Free for all users
📦 Foundry VTT Export
Export converted monsters and items directly as Foundry VTT–compatible JSON. Import into your world with a single click. No manual formatting, no copy-paste errors.
⭐ Patreon Supporter+
How It Works
Enter Your Stats
Fill in your 1e monster's AC, HD, HP, attacks, and damage — or add a custom item to your Grimoire.
Convert & Save
The tools calculate everything automatically. Save to your Grimoire with one click — stored locally, accessible instantly.
Pack & Share
Bundle entries into Packs. Export clean JSON to share with players, other DMs, or import into your VTT.
Start Building. No Account Needed.
Your data stays in your browser. Jump in — nothing to sign up for.
Like what we're building? Support us on Patreon
Shape the roadmap. Unlock premium features. Keep the tools free for everyone.
Dungeon Master Studio — made by game creators, for game creators.