Which MIME types are related to file extension ".kra"?

The .kra file extension is associated with 1 MIME types:

application/x-krita.

A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.

About .kra Files

KRA files are the native project format for Krita. They store layered images, detailed editing history, and metadata in one file.
The MIME type is application/x-krita, which shows that the file is built for digital painting software.

KRA files work primarily with Krita on Windows, macOS, and Linux. Other graphic apps may sometimes offer limited support. According to FilExt.com, this format is ideal for artists needing a robust format to manage detailed creative projects.

Relationship between file extension and MIME type

A file extension is a suffix at the end of a filename that indicates what type of file it is. File extensions help both users and operating systems identify what application should be used to open the file.

File extensions are typically separated from the filename by a period (dot) and consist of 2-4 characters, though they can be longer. For example, in the filename "document.pdf", ".pdf" is the file extension.

File extensions are closely related to MIME types, as they both serve to identify the format of a file. However, while MIME types are used primarily by web browsers and servers, file extensions are used by operating systems and applications.

Associated MIME types

application/x-krita

FAQs

How do I open a .kra file?

You can open .kra files using Krita, the free and open-source digital painting software they are designed for. Krita is available for Windows, macOS, and Linux. Simply download the application from the official website to view and edit these projects with all layers intact.

Can I open KRA files in Adobe Photoshop?

No, Adobe Photoshop does not natively support the .kra format. To move your work to Photoshop, you must open the file in Krita first and use the File > Export menu to save it as a .psd (Photoshop Document). This preserves most layers and blending modes for use in Adobe software.

How do I convert a KRA file to JPG or PNG?

To convert a KRA file to a standard image format, open it in Krita and select File > Export (or Export Advanced). Choose JPEG or PNG from the file type dropdown menu. Note that saving as a standard image flattens the file, meaning you will lose layer data and edit history.

Why can't I see a thumbnail preview of my KRA file in Windows?

Windows does not natively generate thumbnails for KRA files without a shell extension. When installing Krita, ensure you select the option to install the Windows Shell Integration. If enabled, this allows Windows Explorer to display previews of your artwork instead of a generic icon.

What is the MIME type for KRA files?

The standard MIME type for KRA files is application/x-krita. This identifier tells operating systems and web servers that the file is a Krita document. You can look up more details on this type at mime-type.com.

Can I open KRA files on an Android tablet?

Yes, Krita is available for Android tablets and ChromeOS via the Google Play Store. The mobile version supports the native .kra format, allowing you to work on your digital paintings on the go, though a powerful device is recommended for complex files with many layers.

Is a KRA file actually a ZIP file?

Yes, the KRA format is technically a compressed ZIP container. If you rename the extension from .kra to .zip, you can extract the contents to find a mergedimage.png (a preview of the art) and a maindoc.xml file containing layer data. This trick is sometimes useful for recovering a flattened version of a corrupted file.

General FAQ

What is a MIME type?

A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.

MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.

MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.

How do I find the MIME type for a file?

You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.

Why can one extension have multiple MIME types?

Different programs and historical usage may assign various MIME identifiers to the same file format. Listing them together helps maintain compatibility across tools.