A file extension is the group of letters that appears after the dot in a file name, such as .png, .jpg, or .svg. It tells your device and software what type of file it is and how it should be opened.

Some common file extensions used by digital artists include:

.PNG – A raster image format that supports transparency. Ideal for artwork, patterns, illustrations, and graphics that need a transparent background.*

.JPG (or .JPEG) – A raster image format commonly used for photographs. JPG files are usually smaller than PNG files but do not support transparency.

.SVG – A vector graphics format.

.MP4 – A video file format.

There are also many other file extensions available, but these are the most frequently used.

Many creative applications also use their own native file formats. This means that if you save your work in these formats, you can open the file later and continue working on it in the same app.

These include:

.PROCREATE – The native format used by Procreate

.DRM – The native format used by Procreate Dreams

.AFDESIGN – The native format used by Affinity Designer

.AFPHOTO – The native format used by Affinity Photo

When you finish your work in Procreate, Affinity Designer, or Affinity Photo, you can export it as .PNG or .JPG (or .SVG for vector graphics — this format is not available in Procreate). When you open an exported file, some information that existed in the native format will no longer be available.

If you are working in Procreate Dreams, you can export your work as an .MP4 file, which creates a video.

Always remember: if you want to continue working on your project, you need to save it in the native format. Exporting is only for when your work is ready to be shared with the world.

*Yes, it is possible to have a file with a transparent background — this will be discussed soon.