Extract text from Webnovel cache files (QD)
To convert QD cache files to another format, you need Tencent QQ or other Database software.
To convert other file formats to the "App Cache & User Data" file type, you need software like Tencent QQ or a similar tool.
A .QD file generally functions as either an e-book chapter cache for the Qidian reading application or as a user database for the Tencent QQ instant messenger. In rare cases, it is used for ALI Corp satellite receiver firmware updates or legacy Quicken data. These files are built for internal application use and are not designed for direct user interaction.
The main disadvantage of the .QD format is its proprietary nature. They lock your downloaded reading material or chat histories into a specific ecosystem. You cannot natively open them in web browsers, standard word processors, or e-book readers. Users typically want to convert Qidian caches to TXT or EPUB for offline reading on alternative devices, or export QQ databases to CSV or SQL to back up their personal chat history.
Converting a .QD file is notoriously difficult. Standard online converters fail because the files act as system caches rather than standard documents. Furthermore, the parent applications often obfuscate or encrypt the contents to prevent piracy or protect user privacy. In most cases, only the original software can properly read or export the data safely.
Despite these challenges, .QD files are frequently just renamed JSON files or SQLite databases under the hood. Just drag and drop your file onto convert.guru to identify the format, view it, and convert it when possible. Our platform can inspect the file's raw hex data and text strings. If our analysis detects an underlying, supported embedded format like standard JSON or SQL, viewing or partial text extraction may still be possible.
Convert.Guru analyzes your QD file, detects the exact format, and lets you read the text inside.
Users also converted RESOURCE, MSV and TRZ files.
If you want to convert QD file to , you can use Tencent QQ or similar software from the "E-book Cache & App Database" category. In the File menu, look for Save As… or Export….
To convert files to QD, try Tencent QQ or another comparable tool in the "E-book Cache & App Database" 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 QD converter.