Files & Storage

Resize an image on Mac or Windows without stretching it, using the aspect ratio lock, and see why enlarging past the original size always loses some quality.

Burn a CD on Windows — choose Audio CD format for a disc that needs to play in a car stereo, or a data disc for files, and avoid the most common mix-up.

Zip files on Windows or Mac using built-in tools, combine several files into one archive, and understand when zipping actually reduces file size at all.

Convert JPG images to PDF on Mac or Windows using built-in tools, and combine several images into one multi-page PDF document instead of separate files.

Scan a document with just your phone using the built-in Notes or Google Drive scanner, and get a clean, usable result without needing a dedicated scanner.

Recover deleted files on Windows or Mac by checking the Recycle Bin, Trash, cloud sync trash, and File History or Time Machine before trying recovery software.

Unzip a compressed file on Windows or Mac using built-in tools, and know what to do when it’s actually a .rar or .7z file instead of a standard zip.

Convert HEIC photos to JPG on Mac or Windows for wider compatibility, and change one iPhone camera setting to stop the problem from happening on future photos.