Runs 100% locally via Rust WebAssembly

Convert LAS to LAZ Online Free

Convert LAS to LAZ online for free. Fast, private in-browser conversion via WebAssembly with zero file uploads and instant download.

LAS to LAZ Output Settings

LAZ Quality 92%

High visual fidelity, recommended for photos

Preserve EXIF Metadata Keep camera settings, date, and lens details

Strip GPS Location (Privacy) Remove latitude/longitude coordinates

LAS vs LAZ Technical Comparison

Architectural differences, compression standards, and platform support technical specifications

Technical Specifications

Specification	LAS (Source)	LAZ (Target)
Full Name	ASPRS LiDAR Point Cloud Exchange Format	LASzip Lossless Compressed LiDAR
MIME Type	application/vnd.las	application/vnd.laszip
Compression	Uncompressed binary point records	Lossless LASzip (7-10x compression)
Transparency (Alpha)	None	None
Native Browser Support	Limited (Requires WASM)	Standard Target
Typical Payload	50 MB - 500 MB	5 MB - 50 MB (85-90% smaller than LAS)
Best Use Case	Airborne LiDAR surveys, GIS elevation models, forestry canopy analysis, and urban scanning	High-efficiency LiDAR point cloud archiving, web-streaming GIS, and bandwidth reduction

Interactive Engineering Utility

ASPRS LiDAR Point Cloud Density & Elevation Profiler

Real-time client-side calculation based on your LAS to LAZ configuration

Zero Latency • In-Browser

Total Survey Points Total LiDAR returns in LAS/LAZ tile

Survey Footprint (m²) Bounding box area: width × length

Point Density: 20.0 pts/m²

Nominal Pulse Spacing: 0.22 m

LAZ vs LAS Savings: ~82% Smaller

How to Convert LAS to LAZ in 4 Steps

100% private, zero-server upload conversion workflow

Select .LAS Files

Drag and drop your .las photos or click the browse button to select from your device.

Configure Settings

Tune LAZ compression quality, preserve camera EXIF details, or strip GPS location.

Instant WASM Conversion

Compiled Rust WebAssembly decodes the LAS stream and encodes the clean LAZ in sub-50ms.

Download LAZ

Click download to save your high-compatibility LAZ file directly to your downloads folder.

Frequently Asked Questions

Common questions about LAS to LAZ conversion

How does in-browser LAS to LAZ conversion protect my privacy?

Unlike legacy file converters that upload your confidential files to cloud servers, OpenFileConverter runs 100% locally on your computer or phone using Rust WebAssembly. Your original LAS files never leave your device memory, guaranteeing zero retention.

What is the main difference between LAS and LAZ?

LAS (ASPRS LiDAR Point Cloud Exchange Format) provides airborne lidar surveys, gis elevation models, forestry canopy analysis, and urban scanning, while LAZ (LASzip Lossless Compressed LiDAR) is optimized for high-efficiency lidar point cloud archiving, web-streaming gis, and bandwidth reduction. Converting allows you to balance file size, compression fidelity, and platform compatibility.

Does converting LAS to LAZ degrade visual quality?

No. OpenFileConverter uses high-fidelity chroma subsampling with configurable quality levels (default 92%), ensuring virtually indistinguishable image fidelity with sharp edges and rich colors.

Can I convert multiple files in batch?

Yes. You can drag and drop up to 100 files simultaneously. Because processing executes in parallel on your local CPU threads, batch jobs finish in seconds without queue wait times.