Files and Assignments

Common File Types

When you work online, you will see many different file types. A file extension is the short set of letters after the dot in a file name, such as .docx, .pdf, or .jpg. Knowing what these extensions mean can help you open, save, and submit your work correctly.

Quick Reminder

CVA Teachers will not accept assignments linked from OneDrive, Google Drive, etc.

Quick Guide

What File Extensions Tell You

File extensions help your computer know what kind of file you are using and what program may be able to open it.

Document Files

Used for essays, worksheets, written responses, and forms.

Media Files

Used for images, audio recordings, videos, and creative projects.

Reference Chart

Common File Types Students May See

Use this chart to identify common file extensions, understand what they are used for, and know which programs may open them.

File Type	Extension	What It Does	Common Programs
Word Document	.docx	Used for typed assignments, essays, worksheets, and written responses.	Microsoft Word, Google Docs, Pages
PDF	.pdf	Keeps a document’s layout the same on most devices. Often used for readings, directions, forms, and final copies.	Adobe Acrobat, Microsoft Edge, Chrome, Preview
PowerPoint Presentation	.pptx	Used for slide presentations, projects, and visual reports.	Microsoft PowerPoint, Google Slides, Keynote
Excel Spreadsheet	.xlsx	Used for tables, charts, data, calculations, and organized information.	Microsoft Excel, Google Sheets, Numbers
Plain Text File	.txt	Stores simple text without special formatting.	Notepad, TextEdit, Microsoft Word
Image	.jpg / .jpeg	Used for photos and images. Usually smaller than some other image types.	Photos app, Preview, Paint, web browsers
Image	.png	Used for screenshots, graphics, icons, and images that may need a transparent background.	Photos app, Preview, Paint, Canva, web browsers
Animated Image	.gif	Used for simple animations or short looping images.	Web browsers, Photos app, Preview
Audio	.mp3	Used for audio recordings, music, narration, and podcasts.	Media Player, QuickTime, VLC, web browsers
Audio	.wav	Used for high-quality audio files. These files may be larger than MP3 files.	Media Player, QuickTime, VLC
Video	.mp4	Used for videos, recordings, presentations, and multimedia projects.	Media Player, QuickTime, VLC, web browsers
Compressed Folder	.zip	Packages multiple files together into one compressed file. You may need to extract or unzip it before opening the files inside.	Windows File Explorer, Finder, 7-Zip, WinZip
Web Page File	.html	Used for webpages and web-based content.	Chrome, Edge, Firefox, Safari

Helpful Tips

What Should I Know Before Submitting?

Check the File Name

Use a clear file name before submitting. A strong file name might include your name, the assignment title, or the course name. Avoid file names like Untitled, finalfinal, or document1.

Make Sure the File Opens

Before you submit, open the file yourself to make sure it is the correct version and that it opens properly. This is especially important for attachments, recordings, images, and downloaded files.

Upload the File, Not Just a Link

If an assignment asks for a file upload, make sure you upload the actual file. A link to OneDrive, Canva, Google Drive, or another website may not give your teacher access to your work.

Ask for Help When You Are Not Sure

If you are not sure which file type to submit or your file will not upload, contact your teacher. Include the assignment name and explain what file type you are trying to submit.

Important Reminder

Read the Assignment Directions

Different assignments may require different file types. Always read the directions carefully before submitting your work, and make sure the file you upload is the file your teacher needs to grade.

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