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The File Format Database

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File Type of the Day

Today • May 22

.MID

MIDI File

A MID file is a standard MIDI (Musical Instrument Digital Interface) file used by music authoring and mixing programs as well as MIDI hardware devices. It contains music data, such as what notes are played, when they are played, how long each note is held, and how loud each note is played.

May 21

.HEIC

High Efficiency Image Format

An HEIC file contains one or more images saved in the High Efficiency Image Format (HEIF), a file format most commonly used to store photos on iOS devices. It contains an image or sequence of images likely created by an iPhone or iPad's Camera app, as well as metadata describing each image.

May 20

.APPCACHE

HTML5 Cache Manifest File

An APPCACHE file is a file used by web browsers to enable accessibility of web applications when there is no network connection. It contains copies of resources that make up web applications, such as image (.PNG, .GIF, etc.), .CSS, and .JS files, and are identified by URLs.

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