Extract text from NAF files
To convert your NAF file to another format, you need NICE Player or Text Editor or other Data software.
To convert other file formats to the "Linguistic or Audio Data" file type, you need software like NICE Player or Text Editor or a similar tool.
The .naf extension is a notorious "container of chaos," shared by wildly different software ecosystems, creating significant confusion for users.
Most commonly (approx. 15%), it represents an NLP Annotation Format file. These are XML-based text documents used in linguistic research (specifically the NewsReader Project) to tag parts of speech and named entities. While these are technically human-readable, the complex XML nesting makes them difficult to parse manually. Users often need to convert these to JSON, CSV, or standard TXT to make the data usable in Python scripts or standard data analysis tools.
However, a highly problematic variant (approx. 11%) is the Network Audio File created by NICE Systems. These are proprietary audio recordings typically used in call centers for logging customer interactions. This format is the definition of vendor lock-in; it uses a proprietary codec that fails to open in standard media players like VLC Media Player or Windows Media Player. To listen to these recordings for compliance or review, converting them to MP3 or WAV is not just an option - it is a requirement.
Less frequently, you might encounter .naf files associated with the Nebula Device game engine or older titles like Blade & Soul. These are binary 3D animation or mesh files, virtually impossible to edit without the original SDKs.
Convert.Guru analyzes your NAF file, detects the exact format, and lets you read the text inside.
Users also converted BS, 44 and TLV files.
If you want to convert NAF file to CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT, DB or SQL, you can use NICE Player or Text Editor or similar software from the "NLP Data & Call Logging" category. In the File menu, look for Save As… or Export….
To convert DBF, XML, SQLITE, XLSX, SQL, TSV, ACCDB, YAML, MDB, CSV, ODS or JSON files to NAF, try NICE Player or Text Editor or another comparable tool in the "NLP Data & Call Logging" 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 NAF converter.