Extract text from Opera sessions and Qt scripts (QS)
To convert QS sessions and scripts to another format, you need Opera or other Web software.
To convert other file formats to the "Browser Session Data" file type, you need software like Opera or a similar tool.
The .QS file extension primarily functions as a Saved Browser Session data file used by the Opera web browser. These files continuously save the exact state of your browsing environment, including open tabs, window positions, and navigation history. This allows Opera to restore your session seamlessly after a crash or system restart.
In a secondary, developer-focused context, .QS files act as Qt Install Scripts. Developed by the Qt Group, these are plain-text JavaScript-based files used for software application automation, UI logic, and installation sequences.
The Challenges of the Current Format When an Opera session crashes permanently, users are often left with an orphaned .QS file. Because the Opera session file is stored in a closed, proprietary format, opening it directly in a text editor usually results in unreadable, garbled characters. Users desperately want to convert these files into TXT, HTML, or CSV to rescue their lost URLs and browsing history.
The Quicken and QuickTime Myth A common and frustrating myth online suggests that .QS files belong to Quicken or QuickTime Player. This is factually incorrect. Quicken uses QDF, and QuickTime uses MOV or .QTS. Trying to force a .QS file into financial or media software will instantly trigger a compatibility error.
Conversion and Data Recovery Standard online file converters fail to process .QS files because they lack the parsing logic required for proprietary browser architectures. Just drag and drop your file to identify the format, view it, and convert it when possible. If your file is a Qt Script, we instantly parse it as plain text, allowing you to view the code and convert it smoothly to PDF, TXT, or HTML. If it is an Opera Session file, our tool inspects the internal file structure. While a direct 1:1 document conversion is not natively possible for complex browser states, our analysis can often detect the embedded text and display the raw URLs, helping you recover your lost browsing data.
Convert.Guru analyzes your QS file, detects the exact format, and lets you read the text inside.
If you want to convert QS file to MP3, WAV, AAC, FLAC, OGG, WMA, M4A, AIFF, OPUS, ALAC, APE or WV, you can use Opera or similar software from the "Session State Recovery" category. In the File menu, look for Save As… or Export….
To convert MIDI, AAC, TTA, AU, WV, DTS, MID, FLAC, RA, MP3, PCM or WAV files to QS, try Opera or another comparable tool in the "Session State Recovery" 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 QS converter.