Click the "Select File" button above, and choose your BNL file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert BNL to another file type
To convert BNL audio files to another format, you need Albi Magic Pen or other Data software.
Convert a file to BNL
To convert other file formats to the "Proprietary Audio & Dictionary Data" file type, you need software like Albi Magic Pen or a similar tool.
About BNL files
The .BNL file is primarily an interactive book audio data file used by smart reading pens, such as the Albi Magic Reading pen and the Tellimero audio learning pen. In a secondary use case, it functions as an electronic dictionary data file for Besta electronic dictionaries and Japanese dictionary databases.
These files are highly proprietary and hardware-locked. You cannot open a .BNL file with standard media players like VLC or Windows Media Player. This creates a major frustration for users who want to back up, listen to, or edit the audio tracks without the physical pen and book. For dictionary users, the text data is locked inside an encrypted database, making it impossible to read in a standard text editor.
To access the contents, you must extract or convert the data. For web and general playback, convert pen audio files to MP3 or WAV. For archiving or reading dictionary data, convert the file to CSV or TXT.
Convert.Guru analyzes your BNL file, detects the exact format, and lets you read the text inside.
If you want to convert BNL file to MP3, WAV, AAC, FLAC, OGG, WMA, M4A, AIFF, OPUS, ALAC, APE or WV, you can use Albi Magic Pen or similar software from the "Interactive Pen Audio Storage" category. In the File menu, look for Save As… or Export….
To convert MIDI, AAC, TTA, AU, WV, DTS, MID, FLAC, RA, MP3, PCM or WAV files to BNL, try Albi Magic Pen or another comparable tool in the "Interactive Pen Audio Storage" category.
The BNL Converter Story
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 BNL converter.