Extract text from Brainfuck and game archives (BF)
To convert BF archives to another format, you need Notepad++ or other Developer software.
To convert other file formats to the "Source Code & Archive" file type, you need software like Notepad++ or a similar tool.
The .BF file extension is highly fragmented, serving several unrelated purposes depending on the software ecosystem. Its most infamous use is as a source code file for Brainfuck, a notoriously minimalist and esoteric programming language created by Urban Müller. Additionally, .bf files act as proprietary game data archives (often referred to as "BigFiles") for major video game engines. These include flow scripts (FLW0) for Atlus titles like Shin Megami Tensei, asset bundles for Ubisoft's Jade and UbiArt engines (used in Just Dance and Prince of Persia), and archives for older Cryo Interactive games. In rarer cases, .bf denotes Birdfont project files, Microsoft .NET BinaryFormatter serialized data, or even Brazilian Boleto Bancário payment slips stored as raw TIFF images.
Because .bf is a completely generic extension, interacting with it often requires frustrating trial and error. Proprietary game archives are heavily compressed, completely undocumented, and lack official extraction tools, leaving your assets locked inside closed engine formats. Meanwhile, .bf files containing .NET BinaryFormatter data are deprecated and pose critical security risks if deserialized from untrusted sources, as they can execute malicious code.
To view or convert a .bf file, you must first identify its real format. If it is Brainfuck or Beef programming code, convert it to TXT or C for universal readability. If it contains game assets, you must usually extract the internal files to PNG, OGG, or OBJ using community modding tools. If it is a Boleto payment slip, convert it to PDF for easy archiving and printing. Drop your file here to analyze and convert it securely right in your browser - free, online, and without installing software.
Convert.Guru analyzes your BF file, detects the exact format, and lets you read the text inside.
Users also converted TXT, PDF, ZIP, JPG, FORGE, BABY, DPLSAVE, LF, SF, CBM and MBF files.
If you want to convert BF file to LF, SF, CBM, MBF, TTF, OTF, WOFF, WOFF2, EOT, SVG, BDF or PCF, you can use Notepad++ or similar software from the "Source Code & Game Archives" category. In the File menu, look for Save As… or Export….
To convert UFO, WOFF, PFB, GXF, AFM, F3F, SFD, WOFF2, PSF, TTF, TXF or OTF files to BF, try Notepad++ or another comparable tool in the "Source Code & Game Archives" 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 BF converter.