Answers
Small mistakes, such as noise or blocks, that appear in images and video after data is permanently removed.
A file format used to combine and shrink files, often before they are sent as an email attachment.
A technique that reduces file size by permanently removing some data meaning the original cannot be fully restored.
A common audio file format that saves space by removing quiet sounds that people are unlikely to notice.
Playing audio or video as it is downloaded, which needs smaller files so data arrives fast enough.
The process of restoring data that has been reduced in size back to its original format.
A technique that reduces file size and keeps all original data so the file can be perfectly restored.
The process of making a file smaller by encoding data using fewer bits so it needs less storage.