Skip to content

  • File name: Dynamic link library
  • Developed by Windows
  • Type: System files

How to Open DLL Files

File extension dll is used by the following file type(s):

type 1 description:
Default file extension for .dll type:
Dynamic Link Library 
DLL file suffix is related to the dynamic link libraries used by almost all the Windows programs.It should not be deleted never.
that open dll files:
  • Microsoft Visual Studio (Microsoft Windows)
  • Microsoft Windows (Microsoft Windows)
  • Microsoft Windows 7 (Microsoft Windows)


type 2 description:
CorelDRAW export/import filter
The DLL file extension is also associated with CorelDRAW. It is a vector graphics editor developed and sold by Corel Corporation.

These *.dll  contain export or import filters used by the CorelDRAW.

that open .dll files :
CorelDraw Graphics Suite (Microsoft Windows)


type 3 description:
Google Chrome theme 
Themes used by Google Chrome web browser.
that open it:
Google Chrome (Microsoft Windows)


type 4 description:
Microsoft DLL dynamic web page 
The DLL file extension is used for web pages dynamically generated by Microsoft IIS Web server. File contains server-side scripts, such as Perl or VB scripts that generate the HTML for the Web page.
that open it:
Chromium (Microsoft Windows)
Firefox (Microsoft Windows)
Google Chrome (Microsoft Windows)
Microsoft Internet Explorer (Microsoft Windows)
Microsoft Internet Information Services (Microsoft Windows)
Opera browser (Microsoft Windows)
Safari for Microsoft Windows (Microsoft Windows)


type 5 description:
Virtumonde / Vundo Trojan infected 
Vundo (also known as VirtuMonde and VirtuMundo) is a malicious software application that combines both adware and trojan characteristics.

Vundo is wide spread today. And is probably one of the hardest programs to get rid of. Once installed, Vundo downloads and displays pop-up ads that often promote questionable computer-enhancement programs or fake anti-virus or anti-spyware utilities.

Lately, Vundo has been advertising several rogue programs called:

  • WinFixer2005,
  • WinAntiVirus Pro 2006,
  • WinAntiSpyware
  • and RazeSpyware.

Be careful you could be infected!

that open it:
avast! Antivirus (Microsoft Windows)
AVG Antivirus (multiplatform software)
BitDefender (Microsoft Windows)
Norton Antivirus (Microsoft Windows)

You can open dll files with the programs and software of this article.


How to open DAT Files in Windows

.DAT is a data file extension. Its content is text or binary data.  It is usually created by a program and you can also view the dat file from the proprietary software. However, there are many file types that we will see below.

Mime type:

  • application/octet-stream
  • zz-application/zz-winassoc-dat


An example:


Steps for Windows 

  1. Locate the dat file in your computer or mobile device.
  2. Double click on it.
  3. Select a program in the open with dialog. You should select the proprietary software that created it.
  4. Confirm
  5. View it and edit it.
  6. If you don't have the program installed you have to download it and install it.
  7. There are not generic dat viewers, readers or editors. However you can try with a generic text editor like notepad. If you don't know which is the propetary software a text editor will be the best option to edit and view dat files

To learn more about all the dat file types and how to view them keep reading.



File Extension .DAT

.dat file extension is used by following type(s):

  type 1 description:
Data file - common and mostly used .dat type
It is traditionally used by many various applications or programs for their data or resource files.
Related programs
that open dat files:


type 2 description:
Video CD MPEG movie MPEG1 - common and mostly used .dat type
Video CD MPEG movie MPEG1. Extension used for some MPEG files.
Related programs
that open dat file:
  • Need4 Video Converter,
  • Xilisoft DVD Creator,
  • Wondershare DVD Creator for Mac, Wondershare Video Converter for Mac, PowerDVD,
  • Nero Multimedia Suite


type 3 description:
Act of War game file
Package contains game data (music, textures, sounds, models, maps).
Related programs
that open it:
Dragon UnPACKer, Act of War


 type 4 description:
Antivirus data
Used by many antivirus applications for virus descriptions and information (update files).
Related programs
that open it:
AVG Antivirus, BitDefender


type 5 description:
AOL Messenger (AIM) BFTS database 
Used by AOL (AIM) Instant Messenger 6 for database .
Related programs
that open dat files:
AOL Messenger (AIM)


type 6 description:
Apple Safari dictionary 
Dictionary file used by Safari.
Related programs
that open dat files:


type 7 description:
Clarion DOS database
Database file used by Clarion.
Related programs
that open it:


type 8 description:
Corel WordPerfect merge data 
It is associated with Corel WordPerfect, a word processing program, developed by Corel Corporation. Corel Word Perfect is part of Corel Word Perfect Office suite.

The .dat files are used to store merge data.

Related programs
that open it:
  • Corel WordPerfect,
  • Corel WordPerfect Office


type 9 description:
LabVIEW binary datalog
Binary datalog used by LabVIEW.
Related programs
that open it:


type 10 description:
LEGO Star Wars game archive
Archive contains LEGO Star Wars files (maps, objects, sprites, sounds).
Related programs
that open it:
Dragon UnPACKer, LEGO Star Wars


type 11 description:
MapInfo native format
Native map data format used by MapInfo.
Related programs
that open dat:


type 12 description:
Microsoft Internet Explorer cache
It is used by Microsoft Internet Explorer. Cache file.
Each time you open a Web page, your browser creates a cache file (a temporary copy) of the page's text and graphics. When you open the page again, for example, when you click on the toolbar Back button, your browser checks the Web site server for changes to the page.
If the page has changed, your browser retrieves a new version over the network.
If the page hasn't changed, your browser uses the cache files from your RAM or hard drive to display the page.
For example, Internet Explorer caches Web pages to both memory (RAM) and disk (hard drive) until the respective cache is full.
Internet Explorer then rotates out pages based on age. Internet Explorer designed this system to help load Web pages quicker.
But, if you've viewed lots of Web pages, you may have an overloaded hard disk cache. Internet Explorer will have to check before it loads a new page.
Over time your browser's cache grows. A cache full of outdated information is worse than no cache at all. It causes problems with Java applets. Also, it causes you to see out of date text or images. And makes your browser sluggish starting and exiting. The solution is to clear out the cache.
Related programs
that open data file:
Internet Explorer


type 13 description:
Microsoft Word for DOS data 
It is associated with Microsoft Word, worldwide most popular and powerful tool for writing documents.

The .dat files were used in Microsoft Word for DOS for some kind of data files.

Related programs
that open dat:
Microsoft Word


type 14 description:
Mozilla Firefox plug-in register 
It is used by Firefox.
Related programs
that open .dat:


type 15 description:
Nero BackItUp drive image
Suffix for Nero BackItUp drive image. Nero BackItUp automatically backs up your files quickly and easily to your choice of storage media, and creates bootable discs to restore your system if the worst happens.

It includes full support for Windows Vista® virtual folders and built-in SecurDisc data protection features.

Related programs
that open it:
Nero BackItUp


type 16 description:
Skype local store 
dat file used by Skype for local store file.
Related programs
that open dat file:


type 17 description:
Sony Digital Audio Tape
Digital Audio Tape (DAT or R-DAT) is a signal recording and playback medium developed by Sony in the mid 1980s. In appearance it is like a compact audio cassette. It uses 4 mm magnetic tape enclosed in a protective shell. But is roughly half the size at 73 mm × 54 mm × 10.5 mm.
As the name suggests, the recording is digital rather than analog. DAT has the ability to record at higher, equal or lower sampling rates than a CD. (48, 44.1 or 32 kHz sampling rate ) at 16 bits quantization.
If a digital source is copied then the DAT will produce an exact clone. In other digital media such as Digital Compact Cassette or non-Hi-MD MiniDisc, both use lossy data compression.


type 18 description:
SPOT graphic 
A system for implementing an unobtrusive, always-on-top interface-to-interfaces comprises a spot interface that is small that it may lie over any open window such that it is always on top thereby enabling a user to access any available window without first having to return to a main window or close other open windows.
The spot interface comprises an active region represented by a small graphical display element (GDE). It has the appearance of a sphere, which unless disabled by a user, is always visible regardless of which is the topmost window.
When a mouse pointer is moved into the spot GDE, a ring or collar having four radial quadrants representing menu items is displayed after waiting a user specified length of time.
These radial menu items are displayed around the GDE. When the mouse pointer is moved into any of the four quadrants of the collar, a secondary rectangular interface associated with the quadrant is displayed after waiting a user specified length of time.
The secondary interface may be locked opened such that it will not close when the mouse pointer is moved out of area defined by the interface. Periodic animation of the spot GDE may be provided.
Related programs
that open it:


type 19 description:
SPOT image format
 used by SPOT.
Related programs
that open it:
SPOT images, XnView


type 20 description:
TomTom traffic data
dat file Traffic information used by TomTom applications, GPS navigations.
Related programs
that open dat:
TomTom Navigator


type 21 description:
Trillian wiki 
It is used by Trillian.
Related programs
that open it:


type 22 description:
Unfinished FastTrack download
Unfinished download used by FastTrack clients, applications.
Related programs
that open dat:


type 23 description:
Windows registry hive
On-disk format for the Windows registry.
Related programs
that open it:
Microsoft Windows 7, 10, Vista, XP


type 24 description:
Yahoo! Instant Messenger settings file
used by Yahoo! Instant Messenger, contains settings.
Related programs
that open dat file:
Yahoo! Instant Messenger

That is how you view dat files.

Common database file definition and 22 other file types and linked programs information.


File extension dbf is used by following file type(s):

file type 1 description:
Default file extension for .dbf file type:
Common database file
DBF file suffix is related to database files used by many database management programs. Common format.
that open dbf files:
Corel Paradox (Microsoft Windows)
Corel Quattro Pro (Microsoft Windows)
dBASE (Microsoft Windows)
DBF Recovery Software (Microsoft Windows)
DBF Viewer 2000 (Microsoft Windows)
Microsoft Excel (Microsoft Windows)
Microsoft Query (Microsoft Windows) Calc (multiplatform software)
Visual FoxPro (Microsoft Windows)


file type 2 description:
AbacusLaw data file
The DBF file extension is associated with AbacusLaw and used for its data file.
that open dbf files:
AbacusLaw (Microsoft Windows)


file type 3 description:
ACDSee thumbnail cache file
The DBF file extension is associated with the ACDSee. File contains thumbnail cache.
that open dbf files:
ACDSee Photo Manager (Microsoft Windows)


file type 4 description:
Act! main database file
File extension for Act! database file.
that open dbf files:
Act! (Microsoft Windows)


 file type 5 description:
Alpha Five table data file
Contains the table's data, one or more records, each containing one or more fields, and the definition of the table's structure.
System toolbars are stored in a_toolbars_customized.DBF and system menus are stored in a_menus_system.DBF.
that open dbf files:
Alpha Five (Microsoft Windows)


file type 6 description:
Arago database file
Arago a dBASE IV-compatible DBMS and compiler (Arago Quicksilver) originally developed by WordTech Systems. In 1992, the technology was acquired by Borland.
that open dbf files:
dBASE (Microsoft Windows)
DBF Viewer 2000 (Microsoft Windows)


file type 7 description:
ArcView Shapefile attribute table file
The DBF file extension is associated with ArcView Shapefile attribute format The .dbf files use columnar attributes for each shape and are in in dBase III format.

The ESRI Shapefile is a popular geospatial vector data format for geographic information systems software. It is developed and regulated by ESRI as a (mostly) open specification for data interoperability among ESRI and other software products.

A shapefile commonly refers to a collection of files with *.shp, *.shx, .dbf, and other extensions on a common prefix name (e.g., "lakes.*").

The actual shapefile relates specifically to files with the ".shp" extension, however this file alone is incomplete for distribution, as the other supporting files are required.

Shapefiles spatially describe geometries: points, polylines, and polygons. These, for example, could represent water wells, rivers, and lakes, respectively. Each item may also have attributes, that describe the items, such as the name or temperature.

that open dbf files:
ArcView (Microsoft Windows)


file type 8 description:
CLIPPER database file
The DBF file extension is associated with Clipper, a computer programming language that is used to create software programs that originally operated primarily under DOS.

Although it is a powerful general-purpose programming language, it was primarily used to create database/business programs. Clipper was originally created in 1985 as a compiler for dBASE III.

that open dbf files:
dBASE (Microsoft Windows)


 file type 9 description:
dBASE III/IV database file
File extension used by dBASE and compatible applications for database files.
that open dbf files:
Ability Database (Microsoft Windows)
dBASE (Microsoft Windows)
DBF Viewer 2000 (Microsoft Windows)
LibreOffice Calc (multiplatform software)
NeoOffice (Apple OS X) Calc (multiplatform software)
PlanMaker (Microsoft Windows)


file type 10 description:
dBFast database file
Database file used by dBFast. dBFast is an older multiuser version of the standalone dBase/Xbase-compatible development language and database.

The product also cooperates with dBase applications, sharing data over a LAN. In addition to graphics support on screen, dBFast exploits the output capabilities of Windows.

that open dbf files:
dBFast (Microsoft Windows)
LibreOffice Base (multiplatform software)


file type 11 description:
FLAMES Recorder output file
The DBF file extension is related to FLAMES, a family of COTS software products that support live, virtual, and constructive (LVC) simulation of commercial and military vehicles and systems, developed and sold by Ternion Corporation.

An *.dbf file contains FLAMES Recorder output data. These files can be used as input files for FLARE.

that open dbf files:
FLAMES (Microsoft Windows)
Microsoft Excel (Microsoft Windows)


 file type 12 description:
iAnywhere database file
Database file used by mobile database software iAnywhere.
that open dbf files:
iAnywhere (multiplatform software)


file type 13 description:
JetForm FormFlow data file
The DBF file extension is also associated with JetForm FormFlow.

FormFlow was the name of a line of electronic forms products initially created and sold by Delrina in the early- to mid-1990s. The first product in this line was PerForm, which was designed to work under GEM in DOS.

The FormFlow and FormFlow PRO products that succeeded PerForm were designed to work on Windows 3.1.

Delrina was bought by Symantec late in 1995, and the electronic forms division was sold to JetForm in 1996. JetForm, which later changed its name to Accelio, was in turn was bought by Adobe Systems, and the electronic forms products were officially end-of-lifed in 2004.


file type 14 description:
Nova Logic game dialog binary format
Dialog binary format (may need to be decrypted).
that open dbf files:
Delta Force (Microsoft Windows)


file type 15 description:
NovaBACKUP backup database file
The DBF file extension is used by NovaBACKUP for its backup database files.
that open dbf files:
NovaBACKUP (Microsoft Windows)


Oracle Database (multiplatform software)

 file type 16 description:
Oracle 8.x tablespace file
File extension used by Oracle database system.


file type 17 description:
Palm Zire photo database file
The DPF file extension is associated with the Palm operating system. File contains photo database used by Palm.
that open dbf files:
Palm OS (other devices) (Windows Phone/Metro)


 file type 18 description:
Psion Series 3 file
Database files (DBF files) are binary files containing typed, variable length records. Many SIBO applications (for example, the MC Diary and the Series 3 Database) store their data in DBF files. The data files created and manipulated by OPL are also examples of DBF files.

Database files are designed to be Flash-friendly, that is, they may be stored and manipulated in Flash SSDs (or any other EPROM medium).

A DBF file stored on such a medium may be modified by appending, deleting, or replacing records without having to make a new copy of the entire file.

The chapter Database Files in the PLIB Reference manual describes DBF files from the point of view of reading and writing them using PLIB function calls such as DbfOpen, DbfAppend, DbfFindRead, and DbfNextRead. The ISAM Manual discusses more advanced techniques for using DBF files, in conjunction with independent keyed index files. The present chapter focuses instead upon a description allowing access to DBF files independently of these specialised PLIB and ISAM functions.

First, the basic structure of a general DBF file is reviewed, and then particular examples are given of how various SIBO applications use DBF files. This information should assist the creation of file format conversion programs such as might run on another computer, for example converting between Series 3 Agenda files and files that can be read directly by PC-based PIMs (Personal Information Managers).


 file type 19 description:
The Network Diary database file
Database file used by The Network Diary.
that open dbf files:
The Network Diary (Microsoft Windows)


file type 20 description:
Visual FoxPro database table file
The DBF file extension is associated with the Visual FoxPro object oriented database programming language and relational database system for Windows. The .dbf file is database table that contains header and data records. Header part defines the structure of the table and data part contains the actual text of the fields.
that open dbf files:
Advanced Database Recovery (Microsoft Windows)
Advanced DBF Repair (Microsoft Windows)
FoxPro (Microsoft Windows)
Visual FoxPro (Microsoft Windows)


file type 21 description:
Wordtech database file
Database file. dBase compatible software.
that open dbf files:
DBF Viewer 2000 (Microsoft Windows)


file type 22 description:
xBase database file
xBase is the generic term for all programming languages that derive from the original dBASE (Ashton-Tate) programming language and database formats. These are sometimes informally known as dBASE "clones".

While there was a non-commercial predecessor to the Ashton-Tate product (Vulcan written by Wayne Ratliff), most clones are based on Ashton-Tate's 1986 dBASE III+ release-scripts written in the dBASE III+ dialect are most likely to run on the clones.

that open dbf files:
dBASE (Microsoft Windows)
DBF Viewer 2000 (Microsoft Windows)

DjVu image file definition and linked programs information. It can use the suffix .DJV and .DJVU. It is also known as deja vu.

Djvu is a web format and software to store scanned images and digital documents. It is a good format to use on the internet due to its compression capabilities. It is a great PDF format alternative.

It's technology was created on 1996 by AT&T labs. It is an open source format extension part of the library package DjVuLibre

The content made with DJVU format consumes less resources than others and displays quickly. The size of DJVU files is smaller than PDF and JPEG.  It can also contain OCR layer.

See more in the official DJVU website

You can read news, view the galley and talk in the forum. There is also a specific Download and resources section and links where you can find free viewers and programs to download.



How to open djvu files

File extension djvu is used by following type(s) and software:

Default files extension for .djvu type:
DjVu image files
DJVU file suffix is related to DjVu image format designed to efficiently store scanned images and have much lower file size compared to other image formats such as JPEG. .
that open djvu files:


This is how you edit and convert this image format extension. Choose and download one of the previous software.

4oD Player playlist definition and 6 other types and linked programs information.


How to open DO Files


File extension do is used by following type(s):

type 1 description:
4oD Player playlist
Playlist used by 4oD media player.
Related programs
that open do files:


type 2 description:
Apache Struts files
The .do extension is part of the Apache Struts system, framework for building Java-based dynamic web sites. It's an implementation of the Model-View-Controller design paradigm.
Related programs:
  • Firefox, Internet Explorer


type 3 description:
Digital Line Graph optional vector data
A Digital Line Graph (DLG) is digital vector data representing cartographic information. DLGs contain a wide variety of information depicting geographic features (for example, hypsography, hydrography, boundaries, roads, utility lines, etc). DLGs are derived from hypsographic data (contour lines) using USGS 7.5-minute, 15-minute, 2-arc-second (30- by 60-minute), and 1:2 million-scale topographic quadrangle maps.
Related software:


 type 4 description:
Disk image files
A "disk image" is typically containing every data byte on a diskette,i.e. Catalog tracks, DOS (if present) etc.. One kind of disk image, NIB, tries to preserve all disk information (e.g. sector headers, sync bytes, etc.).

Apple II emulators running on a PC, Mac, etc. treat disk image files like diskettes. Disk image are also a handy way to archive Apple II disks on hard disk and to maintain wares on ftp and other download sites.

An image which is in DOS 3.3 order. This suffix is seldom used today.

Related software:


type 5 description:
Java Servlet files
Web-based Java program run by a Web server, such as IBM WebSphere. Used for generating dynamic Web pages. ,
Content of the file can edit a JSP web developer. Results can be viewed by common web browser.
Related programs:
  • Web browser, Java, Apache Tomcat


 type 6 description:
ModelSim script files
Script files used by ModelSim.
Related programs:
  • ModelSim


Free Download Program Viewers

Software that opens a DO file free download.

Generally database file definition and 27 other file types and linked programs information.


How to open DB Files


File extension db is used by following  type(s):

type 1 description:
Default file extension for .db file type:
Generally database files
The DB file extension is used by various applications for database. Database is a structured collection of records or data that is stored in a computer system. The structure is achieved by organizing the data according to a database model. The model in most common use today is the relational model. Other models such as the hierarchical model and the network model use a more explicit representation of relationships.
that open db files:
dBASE (Microsoft Windows)
Oracle Database (multiplatform software)


 type 2 description:
ANSYS database files
The DB file extension is used by some specialized ANSYS applications for their databases.


type 3 description:
Apple Safari cache database files
File extension used by Apple Safari for database cache file.
that open db files:
Safari (Apple OS X)


type 4 description:
ArcView object database files
The db file extension is associated with ArcView. ArcView is a part of Esri's ArcGIS Desktop a GIS (geographic information system) used to work with maps and geographic information.  The db files contain attribute data and are considered as databases.
that open db files:
ArcView (Microsoft Windows)


type 5 description:
Atari Jaguar debugger script files
DB file suffix is associated with Atari Jaguar. Debugger script file.


type 6 description:
Corel Paradox database files
The DB file extension is associated with Paradox, a relational database management system sold by Corel Corporation, which is part of some editions of Corel WordPerfect Office suite.

The .db files contain databases created by the application.

that open db files:
Corel Paradox (Microsoft Windows)
Corel Quattro Pro (Microsoft Windows)
Corel WordPerfect Office (Microsoft Windows)
Paradox database recovery (Microsoft Windows)


 type 7 description:
data by Smartware
The DB file extension is used for Smartware dabase file. Since its establishment in 1983, SmartWare has been delivering high quality reliable IT solutions and services to a wide range of businesses and organizations.
Software:SmartWare II (Microsoft Windows)


type 8 description:
data by XTreeGold
File extension used by XTreeGold - file manager software.
that open db files:
XTreeGold (MS-DOS)


type 9 description:
dBASE IV/dBFast configuration files
The db file extension is associated with dBase, a database management system (DBMS), developed by dataBased Intelligence, Inc.
Software:dBASE (Microsoft Windows)
dBFast (Microsoft Windows)


type 10 description:
DIGIBooster module
DIGIBooster is music tracker for Amiga computers. File contains module/song created in DIGIBooster.
that open db files:
Amiga Forever (Microsoft Windows)


type 11 description:
Microsoft Windows thumbnail database file format
The db file extension is associated with Microsoft Windows operating system. File contains thumbnail database. Thumbnail database is used to store thumbnail images for faster view of images in directory, because thumbnails are smaller and can be loaded faster then original images.
Software:FastStone Image Viewer (Microsoft Windows)
Google Picasa (multiplatform software)
Microsoft Picture It! (Microsoft Windows)
Microsoft Windows XP Professional (Microsoft Windows)
XnView (multiplatform software)


type 12 description:
Microsoft Works files
The DB file extension is associated with Microsoft Works, an office suite produced by Microsoft, which was offered as smaller, less expensive, and with fewer features than the Microsoft Office suite. Its core functionality includes a word processor, a spreadsheet and a database.
that open db files:
Microsoft Works (Microsoft Windows)


type 13 description:
Mozilla (Netscape) client certificate files
The DB file extension used by Netscape for saved client certificates.
Software:Netscape Navigator (multiplatform software)


 type 14 description:
Netscape cache files
Netscape cache file. FAT.DB
Software:Netscape Navigator (multiplatform software)


type 15 description:
Netscape security module database
File SECMOD.DB contains security data module database.
that open db files:
Netscape Navigator (multiplatform software)


type 16 description:
Novell GroupWise address book database files
File extension db is associated with Novell GroupWise. GroupWise is a cross-platform collaborative software product from Novell, Inc. offering e-mail, calendaring, instant messaging and document management. File contains address book database. File extension .db is very often used for database file formats.
that open db files:
Novell GroupWise (multiplatform software)


type 17 description:
Oracle database 
The DB file extension is used for Oracle databases.
that open db files:
Oracle Database (multiplatform software)


 type 18 description:
Progress database 
The DB file extension is reported to be used for databases by some applications developed by Progress.


type 19 description:
Psion Series 3 database file
Psion PLC is a consumer hardware company which developed the Psion Organiser as well as a whole range of more advanced, clamshell-design Personal Digital Assistants. Psion today comprises one remaining operating division, the Canadian Psion Teklogix, having closed or disposed of all its previous operations. Although its actual operations are based in Canada, Psion itself is a British company.


type 20 description:
S.T.A.L.K.E.R. X-Ray engine database files
The DB file suffix is associated with computer games based on the S.T.A.L.K.E.R. X-Ray engine. File contains database.
Software:S.T.A.L.K.E.R. (Microsoft Windows)


type 21 description:
SmartWare Office pac file
File extension used by SmartWare.
that open db files:
SmartWare II (Microsoft Windows)


type 22 description:
Solid database files
Database file created by IBM SolidDb.
Software:SolidDb (multiplatform software)


type 23 description:
Solid Database file format
The db file extension is associated with SolidDB product family by IBM.
that open db files:
SolidDb (multiplatform software)


 type 24 description:
SQL Anywhere database
Database file used by SQL Anywhere.
that open db files:
SQL Anywhere (multiplatform software)


type 25 description:
Synopsys Design Compiler data file
File extension used by Synopsys Design Compiler.
that open db files:
Design Compiler (Microsoft Windows)


 type 26 description:
Various data files
Various data files used by Synopsys Design Compiler, dbVista, Smartware, XTreeGold.


type 27 description:
Windows XP thumbnail database
Thumbs.db files are stored in each directory that contains pictures or movies on Microsoft Windows NT versions prior to Vista. The file is created locally among the images, however, preventing system wide use of the data and creating additional data load on removable devices.Windows XP Media Center Edition also creates ehthumbs.db which holds previews of video files. Each thumbnail created in a directory is represented in this database file as a small JPEG file, regardless of the file's original format.

The images are resized to a maximum of 96×96 pixels, or a proportional miniature of their original shape for non-square images, with 96 pixels on the longer side. Each folder with initiated thumbnail views (that is where they have displayed a Thumbnails or Filmstrip view in Windows Explorer) will have a Thumbs.db file. Folders with pictures also display previews on their icon when displayed in Thumbnail mode – the first four images in the folder at 40×40 pixels (or proportionally shaped), with a 1-pixel divider overlaid on a standard large folder icon. The Thumbs.db file is stored in OLE Compound Document format, the same format that many Microsoft Office products use.

Software:Microsoft Windows (Microsoft Windows)

Apple Safari partial download file definition and 3 other file types and linked programs information.


When it comes to using the internet, you will likely find yourself downloading content at some point.

However, a lot of people don’t actually know how to open files that are in the .download format, and this can leave them a little bit stuck! Luckily, though, we can help you understand how to open files that you have downloaded from the internet for your Windows device.


open download file


What is a .Download File

When you download content from the internet it will have to download fully before it can be opened on your laptop or device.

In the meantime, it will be saved as a .download file—a file that has not fully finished downloading.

This happens when the download is cancelled for whatever reason; perhaps the internet connection is too slow or has otherwise cut out completely. Whatever the case, .download files can be a bit of a nuisance to have to deal with, but once they have finished being downloaded they will automatically be changed to the appropriate file type—for example, .png for image files and the like.


Opening .Download Files

Opening .download files is easy to do, however, if you do not know how to do so then it may seem a little confusing at first! The process of opening .download files is straightforward, though, once you have worked out how to do so.


Step One: Locating The .Download File

Once you have downloaded a file from the internet, the first thing that you will need to do is find your downloaded files on your device. The most obvious place to look for these files is to check your device’s downloads folder. But how do you find this folder? There are actually three different ways that you can find your downloads folder.


From the Start Menu

  1. Click on the device’s start menu.
  2. Subsequently select your account’s username; this will then give you a number of options, one of which should be a link to your downloads folder.
  3. Click on the link to your downloads folder


From Windows Explorer

  1. Use the command, Win + E on your device’s keyboard
  2. Look for “Favorites” or “Computer/This PC”
  3. Downloads should be located just below this option



  1. Use the command, Win + R to open the search menu
  2. Type in the following—”shell:downloads”
  3. Press enter, and your downloads folder should be brought up


If you do not find your file in the download folder, your device may be saving them somewhere else.

Using the same methods, try searching for either your documents or desktop folders and checking there for your downloaded files. Alternatively, you can use the “search this PC” function to look for the name of the file that you just downloaded, if you know it.


Step Two: Opening the Files

Once you have located your .download file, the best way to deal with it is to finish downloading the content that the file contains.

If you cannot do this then you will probably be unable to get any information from the file itself—however, you could try to preview the file to see the information that has been downloaded thus far.

This can be done by attempting to extract the information from a software such as Online Convert, although this is not a guaranteed method. Sometimes, Google Chrome itself may also be able to open a .download file.

However, the only guaranteed way to access your content in full is to allow the download to continue.


How to open download files

File extension download is used by following type(s):

type 1 description:
Default file extension for .download file type:
Apple Safari partial download files
Apple Safari download manager give .download extension to incomplete download file. When the download is finished, download manager renamed file with original file extension.
that open download files:


type 2 description:
Default file extension for .download file type:
Chrome partial download file
The DOWNLOAD file extension is associated with previous versions of Google Chrome web browser for its incomplete download file.

The latest version of Google Chrome is using the CRDOWNLOAD file extension instead.

that open download files:


type 3 description:
Default file extension for .download file type:
Mozilla partial download files
The DOWNLOAD file extension is associated with web browsers based on Mozilla Gecko web layout engine. Mozilla download manager gives .download extension to incomplete download files. When the download is finished, download manager renames the file to its original file extension. Probably used in older versions or of Firefox. Firefox 3 and later is using .PART file extension instead.
that open download files:
Firefox (Microsoft Windows)
Firefox for Linux (Linux)
Firefox for Mac (Apple OS X)
SeaMonkey (multiplatform software)

Microsoft Word 2007/2010 Open XML document file definition and linked programs information.


How to Open DOCX Files


It is used by following type(s):

type description:
Default for .docx file type:
Microsoft Word 2007/2010 Open XML document files
DOCX file extension is related documents created with latest Microsoft Word program, part of Microsoft Office.
that open docx files:
Ability Write (Microsoft Windows)
AbiWord (Microsoft Windows)
Ashampoo Office (Microsoft Windows)
Atlantis Word Processor (Microsoft Windows)
docXConverter (Microsoft Windows)
doPDF Free PDF Converter (Microsoft Windows)
eOffice (Blackberry)
Free PDF Converter (Microsoft Windows)
IBM Lotus Symphony (multiplatform software)
iWork Pages (Apple OS X)
KWord (Linux)
LibreOffice Writer (multiplatform software)
Microsoft Office (Microsoft Windows)
Microsoft Office for Mac (Apple OS X)
Microsoft Office Mobile (Windows Mobile)
Microsoft Word (Microsoft Windows)
Microsoft Word for Mac (Apple OS X)
Microsoft Word Viewer (Microsoft Windows)
Microsoft WordPad (Microsoft Windows)
NeoOffice (Apple OS X)
Office Regenerator (Microsoft Windows)
OfficeSuite (Nokia Symbian)
OfficeSuite Professional (Google Android)
OfficeSuite Viewer (Google Android) (multiplatform software) Writer (multiplatform software)
Pages for iOS (iOS)
SkyDrive for iOS (iOS)
SkyDrive for Mac (Apple OS X)
SkyDrive for Windows (Microsoft Windows)
SkyDrive for Windows Phone
SoftMaker Office (Microsoft Windows)
SoftMaker Office for Windows Mobile (Windows Mobile)
TextMaker (Microsoft Windows)
TextMaker Viewer (Microsoft Windows)
USB Flash Drive for iOS (iOS)
Word Mobile (Windows Mobile)
Word Regenerator (Microsoft Windows)
ZAMZAR - Free Online File Conversion (multiplatform software)


Microsoft Office, as we always say, is the office suite official. Therefore, it has always set the standards by which the majorities of companies move, that is, if we use a word processor, the documents will be saved in DOCX format so that other workers and users can continue to open and edit the document easily. in almost anywhere.

However, the current format - which, as we have said, is .DOCX - has not been the one that has always been present in the suite. A few years ago, before the arrival of the Microsoft Office 2013 generation, the documents were normally stored in DOC, a format very similar to the current one (in fact, the latter is almost retrocompatible) but with certain fundamental differences that cause that, effectively , if we want to keep the format correctly, the document must be saved with its own format.

Taking this into account, has it ever occurred to you that, when uploading a document to a service of certain companies, it indicated that the format was not correct? Normally, the messages themselves indicate that it must be a format created with Microsoft Word and, precisely, the one that you just uploaded is also created in Word. What is the problem?


DOCX Compatibility

Well, basically what we just explained. If a system needs a DOC file, it will not accept DOCX, so if you use a more modern version of Microsoft Office, by saving the document by default you will not be able to upload it to the platform. The solution, yes, is really simple and, unfortunately, there are many users who do not know it yet.

Microsoft Word, like other Office applications such as PowerPoint or Excel, offers the possibility of saving a document with several different formats. Office, for example, helps us create a PDF file directly so that the format remains unchanged from the original file. How is it achieved? Simply we have to go to the File menu and, from there, to Save How ... Taking this into account, the process to save a DOC file is the same, although the only difference will be that when waiting for the document, we will have to choose the DOC format, which is baptized as "Word Document 97 - 2003".

In this way, the system to which we tried to upload the file will not throw us any problem. Undoubtedly, this is a very important problem but, at the same time, it also has a very simple solution.