List of filename extensions / Q
This list contains common file name extensions that are used in some operating systems to differentiate between file formats . In other operating systems, file type identification is mainly carried out using the file header, and the MIME type is more important than the file name extension for e-mail attachments . Systems that use the latter two approaches usually ignore the extension completely.
Filename extension | MIME type | Full name | Remarks, usage |
---|---|---|---|
.qb | Q uick B ASIC | QuickBASIC program code file | |
.qdb | CUEcards database | Notes management | |
.qcd | Quicknote encrypted text | Encrypted note from Quicknote | |
.qdr | Q-Dir Document text | Open note from Q-Dir.exe | |
.qt | Quicktime files (* .mov, * .qt) version 1 and 2 | Apple QuickTime file format | |
.qti | image / x-quicktime | QuickTime Image | Image format from Apple QuickTime |
.qti | image / x-quicktime | QtiPlot | QtiPlot project file |
.qtl | QuickTime Media Link | Information about the media to be played for the QuickTime Player | |
.qua | AntiVir / Avira quarantine | File infected with malware in the quarantine directory | |
.qvd | QlikView | QlikView data file | |
.qvs | QlikView | QlikView script file | |
.qvw | QlikView | QlikView application file, usually with script, imported data and layout | |
.qxd | QuarkXPress Document: | Document format from QuarkXPress up to and including version 5 | |
.qxl | QuarkXPress Library: | QuarkXPress library file | |
.qxp | QuarkXPress Project: | QuarkXPress version 6 or higher document format that bundles different QXDs in one project | |
.qxt | QuarkXPress template: | QuarkXPress template document |