Extract text from Readiris dictionaries (DUS)
To convert DUS dictionaries to another format, you need Readiris or other Data software.
To convert other file formats to the "OCR User Dictionary" file type, you need software like Readiris or a similar tool.
A .dus file is a proprietary Readiris User Dictionary or Font Dictionary file created by Readiris, a leading Optical Character Recognition (OCR) software developed by I.R.I.S. (a Canon company). These files are critical for OCR accuracy as they store custom vocabulary, user-defined terms, and font definitions that the software has 'learned' to prevent legitimate words from being flagged as errors during scanning.
Users commonly have issues with .dus files when migrating to a new computer or switching OCR software, as the file is effectively a 'black box.' It is not a standard text file; opening it in Notepad or Microsoft Word typically results in garbled binary data or unreadable formatting. While the file is intended for internal use by the Readiris engine, users frequently seek to convert it to TXT or CSV to recover their custom word lists or export their training data to other systems.
Convert.Guru analyzes your DUS file, detects the exact format, and lets you read the text inside.
Users also converted YTR and QDI files.
If you want to convert DUS file to TXT, RTF, DOC, DOCX, ODT, PAGES, TEX, LATEX, MD, MARKDOWN, LOG or NFO, you can use Readiris or similar software from the "OCR Dictionary Storage" category. In the File menu, look for Save As… or Export….
To convert PDF, DOC, ASC, TODO, NFO, MEMO, README, DOCX, JPG, TXT, NOTE or RTF files to DUS, try Readiris or another comparable tool in the "OCR Dictionary Storage" 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 DUS converter.