Running D&D well requires preparation. The more organised a DM is before a session, the more freely they can improvise during it. A range of tools — from free digital platforms to low-cost printable resources — exist specifically to reduce the prep burden. This guide covers what's actually available, what each tool does, and where the genuine gaps are that paid resources fill.
D&D Beyond is the most comprehensive free digital tool for DMs, covering character management, monster stat blocks, and encounter building. Roll20 provides free virtual tabletop tools for online play. For physical table play, printable NPC trackers, encounter reference sheets, and campaign journals fill the gap that apps don't cover. Printable DM resources on Etsy fill the physical organisation gap at low cost.
Free Digital Tools Worth Using
D&D Beyond (dndbeyond.com) The official digital platform for D&D. Free access includes:
- Basic rules and character creation (limited to free content)
- Monster stat blocks for hundreds of creatures
- Spell reference and lookup
- Encounter builder and encounter difficulty calculator
- Character sheet manager (with free content unlocked)
Paid subscription unlocks all published sourcebooks digitally. Even on the free tier, D&D Beyond's monster compendium and encounter builder are genuinely useful for DMs who want to check challenge ratings and build balanced encounters quickly.
Roll20 (roll20.net) The most widely used virtual tabletop platform. Free account includes:
- Campaign management and shared maps
- Digital dice rolling
- Character sheets
- Basic campaign tools
Used primarily for online play, though some DMs use Roll20's map tools for planning encounters even when playing in person. Free tier is sufficient for most groups.
Kobold Fight Club / Improved Initiative Free encounter building tools that calculate encounter difficulty based on party level and composition. Useful for DMs who want a quick sanity check that their planned combat encounter is appropriately balanced. Search "Kobold Fight Club 5e" to find the current active version.
Donjon (donjon.bin.sh) A free random generator site covering dungeon maps, random NPC names, town generators, random treasure tables, and encounter generators. Useful for on-the-fly generation when players go somewhere unexpected.
Where Digital Tools Fall Short
Digital tools are strong for lookup, reference, and planning. They fall short in three areas:
Physical table organisation. A phone or tablet on the table is a distraction source and an accidental spoiler risk if players glance at it. Physical reference sheets, NPC trackers, and session notes stay on the DM's side of the screen without the distraction risk.
NPC and encounter tracking during play. When combat involves multiple NPCs with names, motivations, and relationships, tracking them digitally mid-session is slower than a physical reference sheet. A printed NPC tracker with fields for name, appearance, relationship, and notes is faster to scan than navigating app screens.
Session planning and campaign notes. Apps give you searchable digital notes. A physical campaign journal gives you a reference you can annotate, flag, and review without battery life or signal concerns.
Printable DM Resources
Printable PDF resources fill the gap between free apps and full physical purchases. They're low-cost, immediately downloadable, and can be printed at home on standard paper.
The BLAS Digital Etsy store carries a range of D&D DM tools and resources designed for this gap. The Tools and Builders section covers:
NPC Tracker Sheets: Printable A4 sheets with structured fields for tracking named NPCs — appearance, personality, relationship to the party, current status. Useful for any campaign with more than a handful of recurring characters. Available at BLAS Digital on Etsy.
DM Panic Buttons: 60 instant GM ideas for moments when the session goes somewhere unplanned and you need a quick improv hook. Printable reference cards. Covers encounter ideas, NPC motivations, random events, and session pivots.
Campaign builders and planning tools: Structured planning sheets for session prep, campaign arcs, location notes, and faction tracking.
The Traps and Puzzles section covers resources for DMs who want ready-to-use dungeon content:
Dungeon Puzzles, Traps and Riddles: A printable resource pack covering D&D traps, environmental puzzles, door riddles, and dungeon obstacles with stat blocks and difficulty ratings. Available at BLAS Digital on Etsy.
Door Puzzles, Locks and Passages: Focused specifically on dungeon door mechanics — combination locks, pressure plates, riddle doors, and hidden passages. Expands dungeon exploration beyond "the door is locked, roll Athletics."
These are digital download products — purchased once, downloaded immediately, and printable at home. No shipping cost, no wait time.
Building a Practical DM Toolkit
A pragmatic DM toolkit for regular campaign play:
Digital: D&D Beyond (free tier) for monster stat blocks and encounter difficulty. Roll20 if you run online sessions.
Physical reference: DM screen with interior rule tables. Printed condition reference cards.
Session tracking: A printed NPC tracker for recurring characters. A session notes template to prep each week.
Encounter content: A trap and puzzle reference pack for dungeon encounters. Reduces prep time for dungeon sessions significantly.
Improvisation tools: Panic button reference cards for unexpected session pivots.
None of this needs to be expensive. The free digital tools cover lookup and planning. The physical printable resources fill the organisation and in-session reference gaps at low cost.
Browse printable DM tools and resources on BLAS Digital. NPC trackers, DM panic buttons, campaign builders and more. Instant digital download.
Frequently Asked Questions
What is the best free tool for D&D DMs? D&D Beyond's free tier covers the most ground — monster stat blocks, encounter building, and character management at no cost. Roll20 is the best free option for online play.
Do I need to pay for D&D tools? No. The free tools available cover most needs adequately. Paid options (D&D Beyond subscription, physical books, printable resource packs) add convenience and content but aren't required.
What printable DM tools are worth buying? NPC trackers and session notes templates save the most time for DMs running ongoing campaigns. Trap and puzzle packs are worth buying for DMs who run dungeon-heavy games and don't want to design every obstacle from scratch.
How do I track NPCs effectively during D&D sessions? A printed NPC tracker with structured fields (name, appearance, personality, relationship to party) is faster to reference mid-session than digital notes. Keep it on your side of the DM screen.
Is D&D Beyond free? The core version is free. Free access includes the basic rules, monster compendium, encounter builder, and character sheet tools. Full access to all published sourcebooks requires a paid subscription.