Extract text from Game data containers (KDT)
To convert KDT Game files to another format, you need KiriKiri or other Game software.
To convert other file formats to the "Proprietary Game Archive" file type, you need software like KiriKiri or a similar tool.
The .KDT file extension primarily acts as a proprietary game data container used by Japanese visual novel engines, including the KID Corp game engine and the KiriKiri / KAG framework. These files function as digital lockboxes, packing together thousands of individual game assets - such as 2D sprites, background audio, and text scripts encoded in UTF-16 (LE) - into a single compiled archive. In rare instances, .KDT is also used for materials science data by k-Space Associates or as an internal data file within Krita.
The major disadvantage of the .KDT format is its closed, undocumented architecture. Because these are compiled archives meant strictly for the game engine to read, standard archive utilities like WinRAR or 7-Zip usually fail to open them. Gamers, translators, and modders working on titles like Koikatu face significant hurdles when attempting to extract game artwork or translate scripts. Standard online converters cannot process these files because the internal directory structure is engine-specific. To successfully extract the contents to standard formats like PNG, WAV, or TXT, users typically must rely on specialized community-built modding tools such as GARbro. While direct, one-click conversion of an entire proprietary game archive is technically impossible without the original engine, our system can inspect the file and reveal raw text strings or internal headers. If our analysis detects standard embedded media within the .KDT file, viewing or extracting those individual assets may still be possible.
Convert.Guru analyzes your KDT file, detects the exact format, and lets you read the text inside.
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If you want to convert KDT file to , you can use KiriKiri or similar software from the "Game Data Asset Container" category. In the File menu, look for Save As… or Export….
To convert files to KDT, try KiriKiri or another comparable tool in the "Game Data Asset Container" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our KDT converter.