DBB File

What are DBB files and how to open them

Are you having problems opening a DBB file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your DBB files.

What is a DBB file?

A .DBB file is a Skype User Data file.

Skype User Data files store all of a Skype user's locally saved profile information, contacts, chat histories, call logs, transferred files, and related account data. These files are produced by Skype (classic or older desktop versions) and are part of the user's data directory.

Skype writes several DBB files for different roles: - chatmsg*.DBB files hold messages from multiple chats (sometimes with multiple users) - profile*.DBB stores the account profile details of the local Skype user - user*.DBB saves profile or contact details for each of the user's Skype contacts - call, voicemail, chat, chatmember, transfer* DBB files hold call logs, voicemail entries, lists of chats, participants, and file transfers respectively

Skype reads these files on startup to reconstruct the user's profile, contact list, chat history, and other persistent state. More recent versions of Skype no longer use the DBB format; they have shifted to SQLite-based databases (e.g. main.db) or cloud-storage solutions. DBB files are found under the user's Skype folder in AppData (Windows) or the equivalent on other platforms.

Each DBB file begins with a fixed 4-byte signature: the ASCII bytes "l33l" at offset zero identify the start of a DBB record block.

How to open DBB files

Important: Different programs may use files with the DBB file extension for different purposes, so unless you are sure which format your DBB file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested five different DBB openers which you will find listed below.

Last updated: October 22, 2026

Various apps that use files with this extension

These apps are known to open certain types of DBB files. Remember, different programs may use DBB files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about DBB file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.