A daily updated filename extension database!

ETR file extension

The table below provides useful information about the .etr file extension. It answers questions such as:

  • What is the .etr file?
  • What program do I need to open a .etr file?
  • How can the .etr file be opened, edited or printed?
  • How can I convert .etr files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ eTextReader Document

ETR file is an eTextReader Document. Tom's eTextReader is a program which allows you to read texts or e-books on your computer as if you were reading a book.
ETR format description not yet available
Category: Data files
Application: eTextReader
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
ETR aliases:
ETR related links:
ETR related extensions:

Other types of files may also use the .etr file extension.

🚫 The .etr file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

dtr, efr, egr, er, err, ert, et, etd, ete, etf, ett, ftr, rtr, str, ter

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

dBASE Structure Object
Avantes Avasoft v8 Single Data
Sony Playstation Video Stream
STELLA Runtime
DataPerfect Structural Information Data
Altair FEKO Solution Vector Data
EpsilonTest Editor Template
Astrotite 200X Offline Data Repair File
Encryptafile Private Key

🔴 Can't open a .etr file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .etr file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .etr file extension, write to us!

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