File Formats

Supported file formats in Mimir.

Map Formats

Image Files

Standard image formats for battle maps:

Format	Extension	Notes
PNG	`.png`	Best for maps with transparency
JPEG	`.jpg`, `.jpeg`	Good for photographic maps
WebP	`.webp`	Efficient compression

UVTT Format

Universal Virtual Tabletop format:

Extension	`.uvtt`, `.dd2vtt`
Source	Dungeondraft, other VTT tools
Contents	Map image + grid data + walls

UVTT files include:

Embedded map image
Grid size and offset
Wall and door positions
Light source data (some tools)

Export Formats

PDF Export

Available for:

Character sheets
Maps (with optional grid)
Campaign archives
Token cutout sheets

Archive Export

Campaign backup format:

.tar.gz archive containing all campaign data
Maps, documents, characters
Use for backup or transfer

Character Data

Characters are stored in the Mimir database:

Not exported as separate files
Use campaign archive for backup
PDF export for printable sheets

Import Sources

D&D Content

Mimir can import from:

5e.tools JSON format
Official SRD content

Content is stored in the catalog database.

Recommended Workflows

Map Creation

Create in Dungeondraft
Export as UVTT
Import to Mimir (grid auto-configured)

Backup

Use Export Archive regularly
Store .tar.gz files externally
Import on new installations