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Open a UMX file online, free

Open .UMX files online, free. Nothing to install.

Drop your .UMX file here

Opens your .UMX file right here.

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

How to open a code or text file online

Three steps, a few seconds, no software.

01

Open your .UMX file

Drop it on the box, choose it from your device, or paste the text straight in.

02

View it instantly

Your .UMX file opens neatly formatted with line numbers.

03

Search, copy or download

Search the text, jump to any line, then copy what you need or download a clean copy.

What is a .UMX file?

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

A .UMX file is a data file associated with the game Deus Ex, developed by Eidos Interactive Ltd. It contains audio data used for the game's soundtrack or sound effects. These files are typically opened and processed by the Deus Ex application.

Programs that open .UMX files

Windows
Deus Ex
.UMX format details
DeveloperEidos Interactive Ltd.

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Frequently asked questions

Is my .UMX 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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