All about TLB Files

The TLB file type is primarily associated with Visual Studio.

TLB	File extension: TLB
	File type:	type library

What is a TLB file

TLB files mostly belong to Visual Studio by Microsoft. A TLB file is a type library used in a C, C++, or C# application built for Windows operating system. It contains the specification of COM components, Object Linking and Embedding (OLE) objects, enumerations, functions, classes, types, and interfaces compiled into a single binary file. Visual Studio, Visual C++, and C++ Builder are able to determine, access, and invoke interface methods exposed by a TLB (type library) file. Portfolio digital asset management software uses a TLB file to store information about its automation interface. TLB is also the filename extension of the toolbar settings of TrialDirector trial presentation software.

How can I open a TLB file?

You need a suitable software like Visual Studio to open a TLB 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 TLB file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a TLB file directly in the browser:. Just drag the file onto this browser window and drop it.

Online TLB Text Viewer

Choose your .tlb file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert TLB files:

Visual Studio by Microsoft
See the previous paragraphs to learn more about the main application. TLB files are often referred to as Visual Studio miscs because this type of file is primarily created or used by this software.
C++ Builder (type library) by Embarcadero
C++ Builder is a cross-platform application for building native C++ applications. It uses a type library saved in a TLB file. This file format is classified as Developer.
CHASE Evaluation and Audit System (data) by HASTAM
CHASE is a discontinued monitoring and auditing software system for health, safety, and environmental control industries. It saves data in a TLB file. This file format is classified as Data.
Portfolio (automation interface data) by Extensis
Portfolio is a digital asset and file management software with automation capabilities. It uses a TLB file to store its automation interface data. This file format is classified as Data. Related links: Mark Anderson's Portfolio FAQ
SPSS (type library) by SPSS
SPSS is a statistical data preparation, analysis, management, and reporting software. It uses a type library saved in a TLB file. This file format is classified as Developer.
TrialDirector (toolbar settings) by IPRO
TrialDirector is a professional trial presentation software for Windows. It saves toolbar information in a TLB file. This file format is classified as Settings.
VAX (text library) by DEC
VAX is a discontinued 32-bit computer family. It uses a TLB file to store a text library. Such a library was used internally by a VAX machine. This file format is classified as Simple text file.
Visual C++ (type library) by Microsoft
Visual C++ is a C and C++ compiler and debugger for Windows operating system. It saves an application's type library in a TLB file. This file format is classified as Developer.

TLB file format:

Each file has a definite file format, that is, how the stored data is arranged in the file. Often, the file format can be deduced from the file extension or the initial bytes (called the signature). However, different programs can use the same file extension. Furthermore, a file extension can be renamed incorrectly and double-clicking on it will then display an error when it is opened. When there is a problem with a file, the first step to solving it is to determine the file format. Our analysis of the TLB files produces the following result:

The TLB file ending is primarily used by a single program. The file formats most commonly found in TLB files are:

70% of all TLB files are Type Library files. The contents of these files cannot be read by a human; only a computer program can interpret the data. The files are 2 KB to 87 KB in size, with a median of 14 KB. The file type was created 20 years ago but is still used today. Several words can almost always be found in the files, e.g. MSFT. A common filename is Accessible.tlb. Files like these are sometimes connected to service, interfaces, idmantypeinfo, connect, server and kite.
15% of all TLB files internally utilize the EXE file format. EXE is the abbreviation for executable and is the standard executable file format on Windows. The format can be identified by the letters "MZ" at the beginning. Executable files can also be used to distribute viruses and other types of malicious software (malware). They consist of unreadable binary data. The average file size is 44 KB with most files being between 16 KB and 110 KB in size. The following keywords are characteristic: !This program cannot be run in DOS mode and Rich. The file name STDOLE2.TLB or activeds.tlb is characteristic of these files. Files like these are sometimes connected to msado.

All other TLB files (15%) have different formats, frequently e.g. GZIP. Just click the "Choose your .tlb file to analyze" button on this page to find out what your TLB file is.

Technical Data for TLB File Extension

File classification:

Misc

Related files:

tbl, txb, imb, exe, dll, tbi, tzb, nls, tlp, 1, part, tib, rar, dat, zip, tlh, dtd, ocx

Mime type:

application/octet-stream

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: tlbfile
EXEFile: %ProgramFiles%\Restorator 2004\Restorator.exe %1

ProgramID: Photoshop.TIFFFile.8
EXEFile: %ProgramFiles%\Adobe\Photoshop CS\Photoshop.exe %1

a tlb type library is a special file format by Microsoft and should only be edited and saved with the appropriate software.

How to solve problems with TLB files

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