All about LAZ Files

The LAZ file type is primarily associated with LAStools.

LAZ	File extension: LAZ
	File type:	Compressed file

What is a LAZ file?

LAZ files mostly belong to LAStools. LAZ files are compressed LiDAR data files used to store large point clouds from laser scans. These files maintain the fidelity of spatial data while reducing file size, which is essential for efficient storage and processing.

Compression: Uses tailored algorithms to keep the original LiDAR detail.

Data Content: Contains x, y, z coordinates and additional attributes from laser scans.

Software: Typically opened with LAStools or other LiDAR processing applications.

Application: Used in mapping, surveying, and geospatial analysis.

FilExt.com tip: For further details, visit the LAStools official page.

How to open a LAZ file

You need a suitable software like LAStools to open a LAZ 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 LAZ file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a LAZ file directly in the browser:. Just drag the file onto this browser window and drop it.

Online LAZ Text Viewer

Choose your .laz file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert LAZ files:

LAStools
See the previous paragraphs to learn more about the main application. LAZ files are often referred to as LAStools compresseds because this type of file is primarily created or used by this software.
LASzip (LASzip Compressed Lidar Data) by Laszip
LAZ is an extension used by a data format for compressed light detection and ranging (lidar). LAZ stands for LASzip Compressed Lidar Data. Lidar is a remote sensing technology. It was designed for the purpose of measuring distance by illuminating a target with a laser. The reflected light was then analysed to get the value for the distance. LAZ files are often employed for transferring huge amounts of lidar data.

LAZ format details:

Why is it important to know the file format? This is the only way to find out which program to use to open the file. The first characters in a file identify the file format, for example, HTML files start with the bytes <html>. If the file extension does not match the file format, double-clicking on the file will cause an error upon opening. Exact knowledge of the format is therefore important in order to solve problems occurring in files. In the following you will find our evaluation of the LAZ files:

The LAZ file extension is used very often and is primarily used by a single program. The two most popular formats are as follows:

99% of all LAZ files belong to ASPRS Lidar Data Exchange Format. These files are binary files, so they do not contain text, but only cryptic characters. LAZ files can be up to 8 GB in size, but are often around 1 MB - 290 MB. The file type was developed only in the last few years. Certain words are almost always found in the files, such as LASF. These files are often associated with usgs, model, georeferenced, cloud, point, lidar, pnoa, central and xyes.

The remaining 1% of all LAZ files are files with no common format. Tagged as filtered, south, scan, phase, points or arra. Just click the "Choose your .laz file to analyze" button on this page to find out what your LAZ file is.

Technical Data for LAZ File Extension

File classification:

Compressed

Related files:

las, e57, pts, ply, xyz, zip, liz, tif, xml, txt, 7z, pdf, rep, json, fit, nb, dbc, exe

Mime type:

application/octet-stream, application/vnd.las

a laz Compressed file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with LAZ files

Associate the LAZ file extension with the correct application.
Update your software that should actually open compressed files. Because only the current version supports the latest LAZ file format. Search, therefore, e.g. on the manufacturer website after an available LAStools update.
To make sure that your LAZ file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .LAZ file online - secure, fast, and no downloads needed.