File format conversion is the process of changing a file from one format to another. This is often necessary when different software programs or devices require specific formats to function properly. For example, a document created in a Microsoft Word format (.docx) may need to be converted to a PDF format for easier sharing and printing. Various tools and software applications can perform file format conversions, including online converters and built-in features in programs. Common conversions include changing images from JPEG to PNG or audio files from MP3 to WAV. This ensures compatibility and accessibility across different platforms and devices.