Extract text from grammar or database files (BNF)
To convert BNF data files to another format, you need Nuance Dragon or other Data software.
To convert other file formats to the "Data File" file type, you need software like Nuance Dragon or a similar tool.
The .BNF file format is highly fragmented, serving several unrelated functions depending on the software or hardware that created it. Most frequently, it functions as an OID3 talking pen book data file, containing proprietary audio and coordinate data used by educational electronic reading pens. In software development, it serves as a Speech Recognition Grammar file written in Backus-Naur Form syntax, utilized by programs like Nuance Dragon NaturallySpeaking and VoCon Embedded to map voice commands. Alternatively, it can appear as a Sony Cyber-shot camera image date index or a database file for ManiacTools Booknizer.
These diverse formats carry severe disadvantages for general users. Talking pen and Sony camera files are closed, proprietary binaries inextricably linked to specific hardware devices, making them impossible to open on standard web browsers or edit without authorized developer tools. Booknizer databases lock your library metadata into a localized system, while Nuance grammar files require specialized, expensive speech-recognition suites to compile properly.
For text-based .BNF grammar files, the best conversion targets are TXT or XML, which retain the raw syntax rules for broader development use. Booknizer databases are best exported to CSV to liberate your catalog data into standard spreadsheets. However, attempting to convert hardware-specific data (like Sony indexes or OID3 pen files) typically results in a total loss of functionality, as standard converters cannot interpret their proprietary binary structures.
Because .BNF files share the exact same extension but use entirely different internal architectures, standard online converters predictably fail or corrupt the data. Just drag and drop your file onto convert.guru to see what it is and convert it if supported. Our analysis inspects internal headers to identify the precise subtype, allowing you to extract readable text, view internal content, and perform safe conversions where the underlying format allows.
Convert.Guru analyzes your BNF file, detects the exact format, and lets you read the text inside.
Users also converted ZIP, SDEF, DRA and MOF files.
If you want to convert BNF file to JS, TS, PY, JAVA, CPP, C, CS, PHP, RB, GO, RS or SWIFT, you can use Nuance Dragon or similar software from the "Speech Grammar or Hardware Data" category. In the File menu, look for Save As… or Export….
To convert SH, PY, KT, PS1, SWIFT, LUA, PL, JAVA, SCALA, JS, VBS or TS files to BNF, try Nuance Dragon or another comparable tool in the "Speech Grammar or Hardware Data" 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 BNF converter.