The File Extensions Database

.BLK File Extension

  • Developer by: Autodesk
  • Category: CAD Files

What is an .BLK file?

.BLK is AutoCAD Block Template File

Attribute extraction template used by AutoCAD, a 2D and 3D CAD design and documentation application; stores selected drawing elements used for publishing a drawing to a .PDF, .DWF, or .DWFX format; specifically stores the drawing blocks and their properties.

BLK files are used for controlling the data that is published to a sharable file. This is beneficial in situations where only certain types of information should be distributed. BLK files can be created in AutoCAD with the Block Template dialog box, or using the Attribute Extraction wizard.

Programs that open AutoCAD Block Template File
Autodesk AutoCAD 2018
File Type 2 ABBYY FineReader Area Template
Developer by: ABBYY Category: Page Layout Files

Template used by ABBYY FineReader, a program that allows users to convert images and other documents into searchable text documents; contains data that designates the area of a document that should be scanned by FineReader.

BLK files can be used to save time when scanning a large amount of documents with the same layout. You can create a BLK template that can be applied to your documents. Follow the directions below to create and apply templates.

To create a template, open your image and draw your area manually or let FineReader automatically analyze the layout, select Area → Save Area Template..., name the template, and click Save.

To apply an area template, select the pages you want to apply the template to in the "Pages" window. Then, select Area → Load Area Template..., select your desired template, choose "Selected pages" next to "Apply to," and click Open.

Programs that open ABBYY FineReader Area Template
ABBYY FineReader 14
ABBYY FineReader 14
File Type 3 BLK360 Data File
Developer by: Leica Geosystems Category: 3D Image Files Format: Binary

A BLK file is a data file created by Leica Geosystems BLK360, an imaging laser scanner used to collect 3D information about an environment for visualization purposes. It contains 3D point cloud data captured by the BLK360 device that describes surrounding objects and terrain. BLK files can be opened by Leica Geosystems Cyclone Register 360, a program bundled with the BLK360 device.

The data in a BLK file was captured by a scan conducted by a BLK360 device. The data is transferred over a WLAN to a computer running Cyclone Register 360, which is used to save the data as a BLK file.

BLK files are commonly used for rendering images of rooms, buildings, and geological surfaces. The device is most prominently used by the surveying, construction, surveying, engineering, and research communities.

Programs that open BLK360 Data File
Leica Geosystems Cyclone Register 360

How to solve problems with BLK files

  • Associate the BLK file extension with the correct application. On :
    Windows: Right click on any BLK file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.BLK files". Mac: Right click (or Ctrl-click) the BLK file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .BLK is AutoCAD Block Template File. Because only the current version supports the latest BLK file format. Search, therefore, e.g. on the Autodesk manufacturer website after an available .BLK is AutoCAD Block Template File update.
  • To make sure that your BLK file is not corrupted or virus-infected, get the file again and scan it with antivirus software.