Click the "Select File" button above, and choose your FDT file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert FDT to another file type
To convert FDT Data files to another format, you need Apache Lucene or other Data software.
Convert a file to FDT
To convert other file formats to the "Field Data File" file type, you need software like Apache Lucene or a similar tool.
About FDT files
An .FDT file is most commonly an Apache Lucene index field data file. These files store the actual text of fields that are marked as stored during the search indexing process. Another widespread use is as a proprietary data log file generated by Fuji Electric paperless recorders, or scientific equipment like Hitachi fluorescence spectrophotometers and EEG brain signal monitors. Finally, it can act as a document template for older software like Final Draft (versions 5-7) or FormDocs. Because the .FDT extension is heavily fragmented across radically different applications, opening it can be deeply frustrating. If it is a Lucene index, it requires a specialized Java environment or an index viewer like Luke to read. If it is a proprietary hardware log, you are forced to use expensive, outdated companion software from the manufacturer. These files are almost never readable by standard text editors or spreadsheet software, locking your raw data behind proprietary formats or complex binary structures. To actually analyze or share this data, you must extract it. For data logs, converting .FDT to CSV or JSON allows you to open the records in Excel or a database. For text extraction from Lucene indexes, converting to TXT is best.
Convert.Guru analyzes your FDT file, detects the exact format, and lets you read the text inside.
Users also converted FDT2, FDF, FODT, PDF, CFE, DIRECTORYSTOREFILE, SEGMENTS_1 and DTS files.
FAQ
If you want to convert FDT file to DTS, INDD, QXP, PUB, PMD, PM6, PM7, PM8, PM9, PM10, PM11 or OMP, you can use Apache Lucene or similar software from the "Search Indexing & Data Logging" category. In the File menu, look for Save As… or Export….
To convert MDI, PUB, PDP, PM4, P65, COMIC, WEBTEMPLATE, PMD, SPUB, INDD, PM5 or QXP files to FDT, try Apache Lucene or another comparable tool in the "Search Indexing & Data Logging" category.
The FDT 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 FDT converter.