Common file extensions

Definition and example

Common file extensions means Extensions indicate formats and compatible apps: DOCX and XLSX are editable files, PDF is for stable viewing, and PNG/JPG are images. Practice: Compare the extensions of a document, spreadsheet, image and PDF in your practice folder. Try this in the application, check the result, then save your work in your IT Practice folder. If an option is unavailable on your device, use the equivalent Microsoft or Google app and record what you observed For example, Which format is normally best for a finished document that should look consistent? Do this in the named application, inspect the result, and save a clearly named copy. This makes the skill repeatable in school, work and everyday online tasks.