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View a MCDX file online, free

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

Drop your .MCDX file here

Opens your .MCDX 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 .MCDX 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 .MCDX 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 .MCDX file?

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

.MCDX files are Mathcad Prime Documents developed by PTC. These data files contain mathematical calculations and engineering documentation. They are typically opened and edited using Mathcad or Mathcad Prime software.

Programs that open .MCDX files

Windows
7-Zip, PTC Mathcad Express (free mode), PTC Mathcad Prime
.MCDX format details
Full namePTC Mathcad Prime Worksheet File
DeveloperPTC (Parametric Technology Corporation)
First released2011 (PTC Mathcad Prime 1.0)
CategoryText & Code
MIME typeapplication/vnd.ptc.mathcad.prime
Signature50 4B 03 04 "PK" - ZIP local file header (OPC/OOXML package)

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Every viewer is free to use.

Frequently asked questions

Is my .MCDX 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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