.TBD File Extension

Visual Studio Toolbox Data File

Developer Microsoft
3.4  |  9 Votes

What is a TBD file?

File created by Microsoft Visual Studio, a Windows software development application; cache referenced by Visual Studio's tool function to optimize the load time; contains metadata for the current visual appearance and the original visual appearance, for when you select Reset Toolbox; not meant to be manually opened.

More Information

TBD files are located in C:\​Users\​USERPROFILE\​Local Settings\​Application Data\​Microsoft\​VisualStudio\​YOURVERSION\​.

TBD files are hidden, to show them, open Windows Explorer, select View, then check the "Hidden Items" box. Hidden files, including your TBD files, should now be visible.

Open over 400 file formats with File Viewer Plus.Free Download

Programs that open or reference TBD files

Apple Xcode Text-based Definition File

Developer Apple
3.3  |  4 Votes

A TBD file may also be a text-based file used by Apple Xcode, a macOS IDE used to develop iOS and macOS apps. It contains information about a .DYLIB library, the location of the DYLIB library, and symbols. TBD files were introduced in Xcode 7 in September 2015 in order to reduce the size of SDKs that come with Xcode by linking to DYLIB libraries instead of storing the actual, larger DYLIB libraries.

More Information

TBD files are referenced by Xcode and are not meant to be opened. However, they can be viewed in a text editor since they are stored in plain text.

TBD files can be found in the /​usr/​lib of Developer/​SDKs/​MacOSX.sdk, which is contained in the following path:


The files may also be found in similar paths for other platforms, such as AppleTVOS.platform, iPhoneOS.platform, and WatchOS.platform.

Programs that open or reference TBD files


Verified by FileInfo.com

The FileInfo.com team has independently researched all file formats and software programs listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

If you would like to suggest any additions or updates to this page, please let us know.