MIME type is a way to classify the data type of a file. MIME stands for "Multipurpose Internet Mail Extensions." It is an extension of the Internet e-mail standard that defines the different types of content that can be attached to e-mail messages. MIME is commonly used when sending attachments and provides information about the data type, size, and encoding of an attachment. The MIME type indicates what kind of data the attachment contains, for example: text/plain or image/jpeg.

Are the MIME type and file extension the same?

No, the MIME type and the file extension are not the same. The MIME type is only a text string that identifies what kind of content is being transmitted. The file extension is a code that tells the computer which application to use to open the document. Usually, the file extension is corresponding to a certain mime type. But sometimes it can not match, for example when someone changes a file extension manually.

When is useful to know MIME type of file?

Knowing the MIME type of a file is useful when you need to know how to handle it. For example, if you want to upload a file to the web server, knowing its MIME type will help you determine which format is appropriate. MIME types are used by email clients and web browsers to determine what type of content they are handling.

How can I check the file's MIME type?

There are two ways to check the MIME type of a file. The first is to use your operating system's built-in commands. The second way is to look for an extension that matches the file type. For example, ".txt" for plain text files and ".pdf" for PDF files. Or you can use our online tool, which can make this job easy and faster.

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About HEIF format

High Efficiency Image File Format

The High Efficiency Image File Format (HEIF) is a container format for storing individual images, images of sequences are stored too. Other media are included as well, such as the timed text, audio and video. Launched in 2015, it was developed by the MPEG alliance.

When it comes to both compression and image quality, HEIC files win out over JPEG. The HEIC format can actually enhance the quality of photos with transparency and a broader dynamic range capabilities.

A HEIF file takes up roughly half the space of a JPEG without reducing the quality of the actual image. While the image uses smarter, more modern compression algorithms, it's only small on space, keeping just as many megapixels and details intact

Devices running Android 10 support the HEIC compressed image format, a high efficiency video encoding (HEVC) specific brand of the high efficiency image file format (HEIF) as specified in ISO/IEC 23008-12. HEIC-encoded images offer better image quality with smaller file sizes as compared to JPEG files.

You can open HEIF files in Apple Preview and Apple Photos (macOS High Sierra and later) and iOS Photos (iOS 11 and later). On Windows, HEIF files can be opened by Windows 10 devices with the HEIF Image and HEVC Video Extensions installed from the Microsoft Store. You can also install CopyTrans HEIC for Windows, which allows Windows programs, such as Windows Explorer and Windows Photo Viewer, to open HEIF files. HEIF files can also be opened in Windows using Zoner Photo Studio X.

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