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

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

application/octet-stream.

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

About .obx Files

OBX files are data containers for Psion Organiser Block data. They hold binary information and are marked with the MIME type application/octet-stream.

These files were created for Psion Organiser devices. They store block-structured data that may include settings, logs, or transactional details. To open or edit an OBX file, you typically need legacy applications or device emulators that support this specific format.

Based on information from FilExt.com, OBX files are primarily used in vintage computing contexts and are uncommon on modern systems.

If you need to access these files, ensure you have the appropriate legacy tools or data conversion utilities to read the binary content safely.

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/octet-stream

FAQs

What is an OBX file?

An OBX file is a data container used by the Psion Organiser, a vintage series of handheld computers. It stores "block" data, which can include programs, database entries, or system settings saved from the device's memory.

How do I open an OBX file on Windows?

You cannot open OBX files directly with standard Windows applications. You must use a Psion Organiser emulator (such as JaPsion or similar legacy tools) to mount the block file and view its contents within the emulated environment.

Can I view OBX files in a text editor like Notepad?

No, OBX files contain binary data rather than plain text. If you open one in Notepad, you will see scrambled characters because the file uses the application/octet-stream MIME type, which is intended for machine-readable byte streams.

How can I convert an OBX file to a modern format?

Direct conversion is difficult without legacy software. The most effective method is to load the OBX file into a Psion emulator and use the emulated device's built-in print or export functions to output the data as text.

Why does my computer not recognize the .obx extension?

The .obx format is obsolete and associated with hardware from the 1980s and 1990s. Modern operating systems do not include default drivers or associations for Psion data blocks, resulting in an "Unknown file type" error.

What is the MIME type for OBX files?

OBX files are typically identified by the generic binary MIME type application/octet-stream. For more details on how systems handle generic binary files, you can check the entry for application/octet-stream.

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.