All about BLOCK Files

The BLOCK file type is primarily associated with Minecraft.

BLOCK	File extension: BLOCK
	File type:	container file

What is a BLOCK file

BLOCK files mostly belong to Minecraft. A BLOCK file does not refer to a single universal format but rather to a container that holds a block of structured data. In many cases these files are used for game data – for instance, they can store Minecraft level details or Unity asset containers. They may even appear as encrypted data files that secure in‐game terrain definitions.
Other applications include:

Blockchain Data: Some BLOCK files serve as blocks in systems like Hyperledger Fabric, holding records that form a blockchain’s data structure.

Programming Projects: In educational or block-based coding settings (such as Scratch or Pocket Code), they hold project data in UTF-8 text format.

Media, Trading, and Firmware: A few of these files store stock market or trading data, media containers for compressed images (related to MPEG transport streams), or even firmware images for set-top boxes.

FilExt.com tips: Each BLOCK file is crafted by its source application – the file may use a specific internal format (like UnityFS for game containers) or simply standard text encoding. To open or view a BLOCK file, it is best to work with the program that originally created it. More details can be found on related resources such as the Hyperledger Fabric documentation or the Scratch website.

How to open a BLOCK file

You need a suitable software like Minecraft to open a BLOCK file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your BLOCK file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a BLOCK file directly in the browser:. Just drag the file onto this browser window and drop it.

Online BLOCK Text Viewer

Choose your .block file to analyze

or drag and drop it here

Online File Viewer

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BLOCK file extension format:

The file format determines how the data is stored in the file. The file format can be determined based on the file extension and the signature (the first few characters of a file). If the file extension or signature does not match the file format, errors will occur when opening or editing the file. When there is a problem with a file, the first step to solving it is to determine the file format. In the following you will find our evaluation of the BLOCK files:

Files with the BLOCK extension are quite widely used. This file type is used by a few programs, each with its own file format. But the following two file formats are common:

• 30% of all BLOCK files use the same file format, which can be identified by the letters "ENCR" at the beginning. The content consists of illegible binary data, which can only be read and interpreted by the associated programs. The files are on average 5 MB in size and range from 4 MB to 8 MB. The file type is relatively new. The files contain the following words: ENCR, 2019.4.34f1, `.resS and mr0k. Files like these are about dacad.
• 7% of all BLOCK files internally utilize the UnityFS file format. UnityFS is short for "Unity File System". This Unity Game Engine package is a bundle of several compressed Unity assets. Each asset may contain 2D texture, text resources, music files, scene objects, etc. The content consists of illegible binary data, which can only be read and interpreted by the associated programs. BLOCK files are between 27 MB and 52 MB in size. The files contain the following words: UnityFS, 2018.4.15f1 and 2019.4.36f1. The file name BLOCK1.block or BLOCK3.block is typical for these files.

All other BLOCK files (63%) have no uniform format, often, for example, Encrypted Blender 3D data, UTF-8, JSON, GZIP, KLBR, eyJjb, NCRC, Name and UCFX. These files sometimes refer to logo, menu, defaultdb, object, data, encrypted, blocks, media, code, rsrc or user. Just click the "Choose your .block file to analyze" button on this page to find out what your BLOCK file is.