DGN (Microstation) to PDF
Convert DGN (Microstation) files to PDF format
🔒 All processing happens locally in your browser. Your files never leave your device.
What is a DGN file?
DGN is the native drawing format used by Bentley Microstation, the CAD platform widely deployed in civil engineering, surveying, infrastructure design, and transportation. Two versions exist: DGN V7 (1990s, based on Bentley's ISFF format) and DGN V8 (introduced 2001, based on Microsoft's structured-storage compound-file format). Both are still encountered today.
DGN drawings carry the same kinds of entities you would find in AutoCAD DWG/DXF — lines, polylines, arcs, blocks (called “cells” in Microstation), text annotations, dimensions, and references — but the underlying file format is different. That difference is why opening a DGN outside the Bentley ecosystem requires a converter like this one.
Common uses for DGN to PDF
Sharing with non-CAD users
Most stakeholders — clients, councils, internal management — do not have Microstation or AutoCAD. A PDF lets everyone see the drawing without specialised software.
Printing review prints
Issue paper review sets for design markup. PDF is the standard hand-off format for printed engineering review.
Archiving project deliverables
A PDF copy of the final issue lives forever; a DGN may not open correctly in 20 years. Many archive policies mandate PDF/A.
Sending plans for stakeholder review
Procurement, legal, and planning teams can comment on PDFs without round-tripping through Microstation.
How to convert DGN to PDF
- Drag your
.dgnfile onto the converter above, or click to browse for it. - Click “Convert” — the file is parsed in your browser and a PDF is generated.
- Download the
.pdffile and share or print. - If your drawing is multi-sheet, the converter outputs a multi-page PDF.
All processing is client-side via GDAL WebAssembly. Your DGN never leaves your device.
What the PDF preserves
Vector geometry
Lines, polylines, arcs, circles, splines and curves stay as crisp vector strokes that print at any zoom.
Levels (layers)
DGN levels are kept as logical groupings; line colour and weight per level are preserved.
Text and annotations
Text strings render as PDF vector text where possible, otherwise as outlined paths.
Line styles and weights
Standard line styles map cleanly; complex custom line styles may simplify.
Dimensions
Rendered as their visible geometry (lines + text), not as live editable dimensions.
Georeferencing
If the DGN carries GEO information, the geographic extent is recorded in PDF metadata but not as a GeoPDF unless specifically requested.
DGN to other formats
If PDF is not what you actually need, try one of the other dedicated DGN converters:
Frequently Asked Questions
How do I convert a DGN file to PDF?
Drop your .dgn file onto the converter above and download a PDF in seconds. The converter reads the DGN drawing — vector geometry, text labels, layers — and writes a PDF that opens in any PDF viewer. No Microstation, AutoCAD, or other CAD software required.
Does this support both DGN V7 and V8?
Yes. Both Bentley DGN V7 (the older ISFF-based format) and DGN V8 (the more recent OLE-compound-based format) are supported. The converter uses GDAL's DGN driver under the hood.
Will text labels and dimensions be preserved?
Text labels are preserved as vector text in the PDF where the DGN encoding allows. Dimension entities are rendered as their visible geometry (the dimension lines, arrows, and text) rather than as live editable dimensions — PDF does not support that abstraction.
What about layers and styles?
DGN levels (the equivalent of layers) are preserved as visual groupings in the PDF, with line weights and colours mapped through. Complex line styles and custom block libraries may be simplified to plain lines.
Is my DGN file uploaded anywhere?
No. The conversion runs entirely in your browser using GDAL compiled to WebAssembly. Your file never leaves your device — important for engineering deliverables, site plans, or anything covered by an NDA.
Can I edit the resulting PDF in AutoCAD or Microstation?
The PDF is a sharing and review format, not an editable CAD format. If you need to edit the geometry, convert the DGN to DXF instead — most CAD packages open DXF natively.
What if I need DGN to DXF or DGN to Shapefile instead?
Use the dedicated converters for those targets — see our DGN to DXF and DGN to Shapefile pages. DXF gives you an editable CAD file; Shapefile brings the geometry into QGIS, ArcGIS, or other GIS software.
Is there a file size limit?
Practical limits are set by your browser memory. Drawings of tens of megabytes typically convert without trouble; very large multi-sheet drawings may need to be split first.
Need to convert multiple DGN files?
Use our batch DGN to PDF converter to process dozens or hundreds of files in a single run — Pro feature, files never leave your browser.
More DGN (Microstation) Conversions
Convert DGN (Microstation) files to other popular formats
to GeoJSON
.geojson
to KML
.kml
to Shapefile
.zip
to CSV
.csv
to GPX
.gpx
to GeoPackage
.gpkg
to FlatGeobuf
.fgb
to JSON-FG
.json
to MVT
.mvt
to PostgreSQL Dump
.sql
to PMTiles
.pmtiles
to MBTiles
.mbtiles
to DXF
.dxf
to GML
.gml
to Excel (XLSX)
.xlsx
to OpenDocument Spreadsheet
.ods
to GeoRSS
.xml
to MapInfo TAB
.tab
to File Geodatabase
.gdb.zip
to SpatiaLite
.sqlite
to GeoJSON Sequences
.geojsonl
to S57 Nautical Charts
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Convert to PDF From Other Formats
Convert other geospatial formats to PDF
from GeoJSON
.geojson
from KML
.kml
from Shapefile
.zip
from CSV
.csv
from GPX
.gpx
from GeoPackage
.gpkg
from FlatGeobuf
.fgb
from JSON-FG
.json
from MVT
.mvt
from PMTiles
.pmtiles
from MBTiles
.mbtiles
from DXF
.dxf
from TopoJSON
.topojson
from GML
.gml
from OpenStreetMap
.osm
from Excel (XLSX)
.xlsx
from OpenDocument Spreadsheet
.ods
from SVG
.svg
from GeoRSS
.xml
from MapInfo TAB
.tab
from File Geodatabase
.gdb.zip
from SpatiaLite
.sqlite
from Esri JSON
.json
from GeoJSON Sequences
.geojsonl
from S57 Nautical Charts
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