Opening an STM File

The STM file type is primarily associated with OTP Bank.

STM	File extension: STM
	File type:	data file

What is an STM file?

STM files mostly belong to OTP Bank. STM files are not a single type of file. They are used by different systems to store internal data.
For example, banking data versions of these files hold transaction details. Banks like OTP Bank use them, and sometimes they are even stored as PDF documents.
Consider these examples:

Banking Data: Used by banks and financial software (OTP Bank, MultiCash, Számla Agent) to store transaction information. Check details at OTP Bank.
Navigation Files: TomTom AmiGO uses STM files to store map and navigation data. More info is at TomTom.
Audio Modules: Some STM files are Sound Tool Modules or Scream Tracker Modules, holding audio streams for systems like the GameCube.
Model & Measurement Data: Other files store model information (Stella Model File) or measurement streams (Mtronix data file) used by iThink Model Builder and OMICRON ControlCenter.
HTML/Text Data: A few STM files can include HTML webpages or text messages, viewable in web browsers or dedicated viewers.

How to Open: Use the proper software supplied by the originating company. If unsure, open the file with a text editor to inspect its header and contents.

How do you open STM files?

You need a suitable software like OTP Bank to open an STM file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your STM file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a STM file directly in the browser:. Just drag the file onto this browser window and drop it.

Online STM File Viewer

Choose your .stm file to view this image

or drag and drop it here

Online File Viewer

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How to convert STM files to JPG, PDF, HTML, DOC, ...

You can convert STM files using our online STM file viewer (powered by Convert.Guru):

To do so, click the "Choose your .stm file to view this image" button above.
Your STM file will then be displayed in the browser.
Now click on "Save as..." at the top of the page.
Then click the file format (e.g. PDF, JPG, DOCX, TXT, ...) you want.
Download the converted file.

Programs that open and convert STM files:

OTP Bank
See the previous paragraphs to learn more about the main application. STM files are often referred to as OTP Bank data files because this type of file is primarily created or used by this software.
Exchange Server (Streaming Store) by Microsoft Corporation
LloydsTSB (Bank Statement) by LloydsTSB
Bank statement in CSV format.
Medlin Accounting (Statement Layout) by Medlin Accounting
PhotoStudio (Stamp) by ArcSoft, Inc.
PhotoStudio is a photo editing application featuring an array of advanced tools, filters and special effects. Related links: XnView
Prosa (State Transition Diagram Model) by Insoft Oy
The identifying characters used for this association are - Hex [Position 16]: 53 54 4D 32, ASCII: STM2.
Scream Tracker v2 Module
SDR99 Speech Recognition Task Time Segment Time Marked File
Sealed (HTML Document) by SealedMedia
SealedMedia software integrates with existing business systems to deliver protection of valuable digital information. It enables complete control over who can use sensitive information and when. The originator can change rights to access and use a document even after it’s been delivered including revoking access. The Mime types used with this association are: application/vnd.sealedmedia.softseal.html. The identifying characters used for this association are - Hex: 53 6F 66 74 53 45 41 4C 20, ASCII: SoftSEAL. Related links: Unsealer
Secure Login File for Navy's NOWS
SHTML File
short for .SHTML = HTML with SSI The Mime types used with this association are: text/html. Related links: HTML File Containing Server Side Directives
Sound File
The Mime types used with this association are: audio/mod, audio/x-mod. This file format is classified as Audio.

STM format details:

To find out what program is needed to open STM files, you need to determine the file format. The file format can be determined based on the file extension and the signature (the first few characters of a file). However, different programs can use the same file extension, and file extensions can be assigned incorrectly. Knowledge is power - this also applies when dealing with unknown or faulty files. Our analysis of the STM files produces the following result:

The STM file ending includes many different file formats. The file formats most commonly found in STM files are:

15% of all STM files start with the bytes 11, which are crucial for this file format. These files are text files, so they contain words and text. The files are 5 KB to 91 KB in size, with a median of 14 KB. The file type is very recent. The file name 20180601.stm is typical for these files. Such files are related to statement and postings.
7% of all STM files start with the bytes purpose = shadow size = crucial for this file format. The contents of these files can even be read by a human. STM files can be up to 100 bytes in size, but are often around 90 bytes - 100 bytes. The following keywords are characteristic: content_id, header_id, purpose = shadow, size and timestamp.

All other STM files (78%) have no consistent format, the following 7 formats exist: HTML, STL, CUST and UMBRIA. Tagged as umbria, probe, oznet, theta, smosmania or model. If you want to find out which format your STM file belongs to, just click on the button "Choose your .stm file to view this image".

Technical Data for STM File Extension

File classification:

Data

Related files:

s3m, it, xm, stm1, smt, ums, aus, csv, xml, cps, zip, stp, mp3, docx, mp4, dat, edb, jrs, pdf, html, mod

Mime type:

text/x-server-parsed-html, text/x-server-parsed-html3

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: AshampooMediaPlayer.AudioFile, FileType: Ashampoo Media Player+ audio file, AppName: Ashampoo Media Player+

ProgramID: Eots99.Document, FileType: Eots99 Document

ProgramID: GraphicsConverterPro.stm, FileType: PhotoStudio Stamp, AppName: GraphicsConverter-reg
EXEFile: GraphicsConverter.exe

ProgramID: htmlfile, FileType: HTML Document, AppName: FlashPeak SlimBrowser

ProgramID: htmlfile, FileType: HTML Document, AppName: Internet Explorer
EXEFile: iexplore.exe

ProgramID: htmlfile, FileType: HTML Document, AppName: Microsoft Office XP component

ProgramID: htmlfile, FileType: HTML Document, AppName: Smart Explorer

ProgramID: stmfile, FileType: HTML File, AppName: Adobe GoLive Application
EXEFile: GoLive.exe

ProgramID: StRunner, FileType: Learn2 StRunner Stream File, AppName: StRunner
EXEFile: StRunner.exe

ProgramID: Winamp.File, FileType: Winamp media file, AppName: BSPlayer
EXEFile: bsplay.exe

ProgramID: Winamp.File, FileType: Winamp media file, AppName: Winamp
EXEFile: Winamp.exe

ProgramID: Winamp.File, FileType: WINAMP.FILE

ProgramID: Winamp3.File, FileType: Winamp media file, AppName: Winamp3
EXEFile: studio.exe

ProgramID: Winamp3.File, FileType: Winamp media file, AppName: Winamp3
EXEFile: winamp3.exe

ProgramID: htmlfile
EXEFile: %ProgramFiles%\Internet Explorer\iexplore.exe -nohome

ProgramID: htmlfile
EXEFile: %ProgramFiles%\SlimBrowser\sbrowser.exe %1

ProgramID: htmlfile
EXEFile: %ProgramFiles%\Yahoo!\browser\ybrowser.exe %1

ProgramID: htmlfile
EXEFile: C:\XPB-Net\MYIE2\MyIE.exe %1

ProgramID: SealedMedia.html
EXEFile: %ProgramFiles%\Internet Explorer\iexplore.exe -nohome %1

ProgramID: Winamp.File
EXEFile: %ProgramFiles%\JetAudio\JetAudio.exe %1

ProgramID: Winamp.File
EXEFile: %ProgramFiles%\Netscape\Communicator\Winamp\winamp.exe %1

ProgramID: Winamp.File
EXEFile: %ProgramFiles%\WinAmp\Winamp.exe %1

ProgramID: Winamp3.File
EXEFile: %ProgramFiles%\Winamp3\Studio.exe %1

ProgramID: Winamp3.File
EXEFile: %ProgramFiles%\Winamp3\winamp3.exe %1

ProgramID: htmlfile
EXEFile: %ProgramFiles%\Deepnet Explorer\Deepnet.exe %1

ProgramID: Winamp.File
EXEFile: %ProgramFiles%\Winamp5.08\Winamp.exe %1

ProgramID: StRunner
EXEFile: %ProgramFiles%\Learn2.com\StRunner\StRunner.exe %1

ProgramID: pnpstmfile
EXEFile: %ProgramFiles%\A Tech Group\Professional Notepad\notepad.exe %1

ProgramID: FireworksStyleLibrary
EXEFile: %ProgramFiles%\Macromedia\Fireworks MX 2004\Fireworks.exe %1

ProgramID: XnView.Image
EXEFile: %ProgramFiles%\XnView\xnview.exe %1

ProgramID: Winamp.File
EXEFile: %ProgramFiles%\Winamp5\Winamp.exe %1

ProgramID: htmlfile
EXEFile: %ProgramFiles%r\Internet Explorer\iexplore.exe -nohome

ProgramID: htmlfile
EXEFile: %ProgramFiles%\MYIE2\MYIE.exe %1

ProgramID: htmlfile
EXEFile: %ProgramFiles%\Maxthon\Maxthon.exe %1

ProgramID: stella.document
EXEFile: %ProgramFiles%\STELLA7r\STELLA7r.exe %1

ProgramID: RepDesFile
EXEFile: %SystemRoot%\System32\REPDES32.EXE

ProgramID: htmlfile
EXEFile: %ProgramFiles%\AVANTB~1\avant.exe

ProgramID: Winamp.File
EXEFile: %ProgramFiles%\K-Lite Codec Pack\Media Player Classic\mplayerc.exe

ProgramID: htmlfile
EXEFile: %ProgramFiles%\Avant Browser\avant.exe

ProgramID: htmlfile
EXEFile: %ProgramFiles%\Wanadoo\WOOBrowser\WOOBrowser.exe

Show all 40 listings To Top

an stm data file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with STM files

Associate the STM file extension with the correct application.
Update your software that should actually open data files. Because only the current version supports the latest STM file format. Search, therefore, e.g. on the manufacturer website after an available OTP Bank update.
To make sure that your STM file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .STM file online - secure, fast, and no downloads needed.