Click the "Select File" button above, and choose your NLP file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert NLP to another file type
To convert NLP Data files to another format, you need ICU4C or other Data software.
Convert a file to NLP
To convert other file formats to the "Proprietary Application Data" file type, you need software like ICU4C or a similar tool.
About NLP files
The .nlp file extension is a highly fragmented format used by several completely unrelated software ecosystems. Primarily, it functions as a Unicode normalization data file managed by ICU4C. It is also frequently used as a Text-to-Speech voice data file for the Nuance Vocalizer engine or as a TestPro exam data file.
Other software, such as Dividia Technologies DView, uses .nlp for network launcher packages, while legacy systems like Corel WordPerfect use it for National Language Parameters.
Because the .nlp extension is shared among totally different applications, users face immediate frustration when trying to open them. Standard operating systems cannot natively identify which specific software created a given .nlp file. Furthermore, most of these are closed, proprietary system files that are not meant to be opened manually. Without the exact original software installed, these files appear as useless, unreadable data.
Converting a raw system data file directly is usually impossible, but some .nlp variants hide standard, extractable formats. For example, TestPro .nlp files are actually disguised RAR archives containing PDF documents. Similarly, Dividia network launchers are just plain-text JSON files. Your best target formats are PDF or JSON, depending on what the file actually hides.
This extreme fragmentation is why standard online converters fail to process them. They only look at the file extension and give up. We can inspect the file's internal signature. If our analysis detects a supported underlying or embedded format - like a hidden archive or plain text JSON - viewing or conversion may still be possible.
Convert.Guru analyzes your NLP file, detects the exact format, and lets you read the text inside.
If you want to convert NLP file to SQL, CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT or DB, you can use ICU4C or similar software from the "System and App Data Storage" 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 NLP, try ICU4C or another comparable tool in the "System and App Data Storage" category.
The NLP 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 NLP converter.