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View a MDT file online, free

Open and read .MDT files online. View source, logs and text with syntax highlighting, search and line numbers, free.

Drop your .MDT file here

Opens your .MDT file right here.

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Up to 50 MB · 160+ text and code extensions
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What you get for a .MDT file

We don't have a dedicated viewer for this format, so we identify and inspect it instead — honestly, only what can be read from the file.

01

Drop your .MDT file

Choose it or drag it in. It's read right here in your browser.

02

We identify it

We read the magic bytes to tell what the file really is, its MIME type, and whether the name matches the contents.

03

See the details

Any metadata we can extract (dimensions, EXIF/GPS, document author and dates), a hex view, plus readable text and strings found inside.

What is a .MDT file?

Plain text that programs, servers and people write every day.

An MDT file is a GeoMedia Access Database Template developed by Intergraph. These data files contain structures used for organizing information within geographic information system projects. They are typically accessed and managed using Microsoft Access, Microsoft Office, or GeoMedia software.

Programs that open .MDT files

Windows
Microsoft Office, Microsoft Access, GeoMedia (Hexagon Geospatial)
.MDT format details
Full nameGeoMedia Access Database Template
DeveloperIntergraph Corporation (now Hexagon Geospatial)
First releasedmid-1990s (with early GeoMedia releases)
CategoryText & Code
MIME typeapplication/octet-stream
Signature00 01 00 00 53 74 61 6E Standard Jet DB (same as .mdb)

Related viewers

Every viewer is free to use.

Frequently asked questions

Is my .MDT file uploaded anywhere?

No. The file is read and highlighted for you.

Why do some characters look wrong (é, ł)?

That usually means the file was saved in one encoding and opened in another. We detect UTF-8, UTF-16 and the Windows-1250/1252 code pages automatically and show which one was used.

Can it handle huge log files?

Yes, up to 50 MB. Only the lines on screen are drawn, so scrolling stays smooth. Syntax colours are switched off for files over 1.5 MB to keep things fast.

How do the log level filters work?

We find levels like ERROR, WARN, INFO and DEBUG on each line. Lines without a level, such as stack traces, stay with the entry above them, so filtering to errors keeps the full trace.

Can I edit the file?

This is a viewer. To change code, download it or copy it into your editor. Converting encodings and line endings is planned.

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