Extract text from Unity asset bundles (HHH)
To convert HHH asset bundles to another format, you need Unity or other Game software.
To convert other file formats to the "Asset Bundle Archive" file type, you need software like Unity or a similar tool.
The .HHH file format is primarily used as a UnityFS (Unity File System) asset bundle by the Unity game engine. Game developers use these archives to package and stream game assets such as 3D models, textures, audio clips, and compiled scripts. A secondary, much rarer use case for the .HHH extension is a Precompiled Header File for the legacy Power C compiler.
Opening a .HHH file directly is impossible without specialized software. It is a proprietary, closed archive format. It is highly compressed and locked to the specific version of Unity used to build the game. This makes it difficult to view or edit the contents. Regular operating systems cannot read UnityFS archives, and users cannot simply double-click the file to access the images or audio inside.
Users often need to convert or extract .HHH files to modify game assets, recover lost project files, or create game mods. The best conversion targets depend on the internal assets. 3D models should be extracted to standard FBX or OBJ formats. Textures should be converted to PNG or DDS. Audio files usually extract as FSB or WAV. However, complex scene hierarchies or compiled code usually break or lose metadata during extraction.
Standard online converters fail to process .HHH files because they lack the reverse-engineering libraries required to parse the proprietary UnityFS header and decompress the LZ4 or LZMA data blocks. This file format is difficult to open or convert because it is intentionally packaged for software consumption, not human editing. Often, only the original game engine or dedicated extraction tools like AssetStudio can properly read or export the data. Despite these limits, convert.guru can still help. Just drag and drop your file to identify the format, view it, and convert it when possible. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible.
Convert.Guru analyzes your HHH file, detects the exact format, and lets you read the text inside.
If you want to convert HHH file to , you can use Unity or similar software from the "Game Asset Archive" category. In the File menu, look for Save As… or Export….
To convert files to HHH, try Unity or another comparable tool in the "Game Asset Archive" 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 HHH converter.