Click the "Select File" button above, and choose your NDF file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert NDF to another file type
To convert NDF Database files to another format, you need Microsoft SQL Server or other Database software.
Convert a file to NDF
To convert other file formats to the "Secondary Data File" file type, you need software like Microsoft SQL Server or a similar tool.
About NDF files
The .NDF file extension is highly fragmented, serving completely different primary use cases depending on the software environment. In enterprise environments, it is predominantly a Secondary Database Data File used by Microsoft SQL Server to store data that exceeds the capacity of the primary MDF file. In consumer environments, particularly in Asia, .NDF is used by companies like NetEase to obfuscate cached media, such as MP4 videos for dictionary pens, or PNG and JPG images for music applications and emulators. Other niche uses include Nikon Dust Off Reference Photos, RapidFire Tools network assessments (which are underlying ZIP files), and NanoDrop spectrophotometer reports. Because of this fragmentation, the format suffers from severe compatibility issues. SQL Server files are completely useless without their corresponding master file, and proprietary media caches lock users into specific apps by intentionally breaking standard file associations. You cannot natively open these files in web browsers or standard media players. When converting, SQL data must be exported to CSV or SQL dumps via the database engine itself. Media caches should be converted to standard MP4, PNG, or JPG formats to restore cross-platform compatibility. Because this file format is difficult to open or convert due to its fragmented nature, standard online converters often fail. Emphasize that often only the original software can properly read or export the data. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible.
Convert.Guru analyzes your NDF file, detects the exact format, and lets you read the text inside.
If you want to convert NDF file to MDF, DB, SQLITE, SQLITE3, MDB, ACCDB, DBF, ODB, FDB, GDB, MYD or FRM, you can use Microsoft SQL Server or similar software from the "Secondary Database & Cached Media" category. In the File menu, look for Save As… or Export….
To convert SQLITE3, BAK, RDB, SQL, DB4, MDF, MDB, LDF, DB, DB3, SQLITE or FRM files to NDF, try Microsoft SQL Server or another comparable tool in the "Secondary Database & Cached Media" category.
The NDF 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 NDF converter.