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View a MDI file online, free

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

Drop your .MDI file here

Opens your .MDI file right here.

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Up to 50 MB · 160+ text and code extensions
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100% free. No limits on use

What you get for a .MDI 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 .MDI 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 .MDI file?

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

A .MDI file is a Microsoft Document Imaging format used for storing page layouts as images. These files typically contain high-resolution graphics or scanned documents created within the Microsoft Office environment. They can be opened and viewed using Microsoft Office or specialized conversion tools like MDI Converter.

Programs that open .MDI files

Windows
Any TIFF/image viewer (after conversion), Microsoft MDI to TIFF File Converter (mdi2tif), Microsoft Office 2007 (with MODI component)
.MDI format details
Full nameMicrosoft Office Document Imaging file (MODI)
DeveloperMicrosoft Corporation
First releasedOffice XP / Office 2003 (Microsoft Office Document Imaging tool)
CategoryText & Code
MIME typeimage/vnd.ms-modi
Signature45 50 2A 00 "EP*\\0" - MODI variant of the TIFF header (little-endian "EP" + 0x2A)

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Every viewer is free to use.

Frequently asked questions

Is my .MDI 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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