HFZ → JPEG · Windows

Convert HFZ to JPEG

HFZ to JPEG for whole archives of tiles, layers or survey files at once, with nothing uploaded and no account required.

Batch HFZ to JPEG conversion doesn't have to be complicated. reaConverter processes entire folders with consistent quality settings. Works offline with no internet required, so you can convert anywhere, anytime. Handles whole folders of tiles and layers in one run, with identical settings on every file.

DownloadHFZ to JPEG ConverterConvert
HFZ to JPEG
Online
.hfz.JPEG
4.8

Converting files since 2001

Runs offline — nothing uploaded

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How to Convert Multiple .hfz Files to .jpeg?

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting HFZ files in under two minutes.

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Install reaConverter

2. Load your HFZ files

Open reaConverter and import your .hfz files. No file limits, no slowdowns. Add as many as you need.

Drag files into the window, use the Add Files button, or select entire folders.

Load your HFZ files into reaConverter

3. Select JPEG as output format

Select JPEG from the output format list and set your destination folder. You can also adjust quality and compression settings.

Select JPEG as output format

4. Start HFZ to JPEG conversion

Hit Convert to process your files. The log window shows progress, timing, and status for every file.

Start Conversion

Conversion complete? Your JPEG files are saved to the destination folder, ready to use.

Step by step

How It Works

reaConverter offers the fastest, simplest solution for converting your HFZ files into JPEG without GIS software - all files processed on your PC for maximum privacy and speed.

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Technical note

Before you convert HFZ to JPEG

Every cell in an HFZ file holds a measurement rather than a colour, usually elevation in metres, running from sea level up to whatever the highest point in the tile happens to be. JPEG stores brightness, so the conversion stretches that range across a grey or colour scale. What you get is a readable picture of the terrain, and it is the right thing for a relief map or a figure. What you no longer have is the data: sampling a pixel in the JPEG returns a shade, not an altitude. Missing cells in an elevation grid, such as water, radar shadow or the edge of a survey, are not empty: they hold a sentinel value, -32768 in SRTM, -32767 in DTED and very often -9999 in ESRI grids. Counted as a real height, that value stretches the scale so far that the actual terrain collapses into a few near-identical shades. When a JPEG output looks flat and washed out, a void treated as data is the usual cause.

Map Data Workflow

Turn GIS data into something anyone can open

A map saved as JPEG opens on any computer and any phone. reaConverter produces those from HFZ in batch, entirely offline.

  • Render every file in a folder to JPEG with the same size and settings
  • Set DPI and output dimensions before the run, not afterwards
  • Stamp a text watermark, such as a project name or a date, on every image
  • Pick up new data automatically with Watch Folders, or script the job from the command line

Everything runs on your PC, which matters for cadastral, utility and client data that should not pass through an upload form.

GIS data conversion

User reviews

What people say after the first batch

Average User Rating:4.8
Last updated on September 13, 2026
An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness.
Elena Anderson
Elena Anderson
Happy User
Enable shell integration for lightning-fast file conversions directly from Windows Explorer.
R. Lewis
R. Lewis
Happy User
After 200+ conversions on my budget laptop (i3-1115G4/4GB RAM/Win11), reaConverter outperforms heavyweight tools. Zero crashes, low CPU usage during batch processing, and no internet dependency - exactly what professionals need.
Walter Morgan
Walter Morgan
Satisfied Customer
We deployed reaConverter across our department to standardize file formats for our archives. The command-line support and automation features integrated perfectly into our systems. Stellar performance and zero crashes—it just works.
David R.
David R.
IT Solutions Architect
So simple! I just needed to convert a couple of files to another format, and for such a straightforward task, the online converter worked perfectly — delivering the files I needed in no time. Excellent service!
Kenneth D. Carter
Kenneth D. Carter
Satisfied Customer
I run a small design agency, and reaConverter has saved me countless hours. The batch processing is lightning-fast, and the ability to convert hundreds of files into different formats at once is a game-changer. Highly recommend!
Mark T.
Mark T.
Satisfied Customer

FAQ

HFZ to JPEG Conversion

What are HFZ files?

HFZ is the compressed version of the HF2 terrain height map format, in which the whole file is packed with the gzip method. A height map is a rectangular grid where every cell holds the elevation of one spot of a landscape, and such grids can grow very large when they cover wide areas in fine detail. HFZ keeps them small by combining two ideas: heights are stored as differences between neighboring cells, and the author chooses how precise the heights need to be. The same data can also be found with the .hf2.gz extension. In a published comparison, a terrain saved as HFZ took about 1.4 MB, while the same terrain in the TER format packed with gzip took 1.8 MB, at equal vertical precision.

What are JPEG files?

JPG or JPEG is a commonly used method of lossy compression. JPEG compression is used in a number of image file formats. JPEG/Exif is the most common image format used by digital cameras and other photographic image capture devices; it is the most common format for storing and transmitting photographic images on the internet.

Can reaConverter convert HFZ to JPEG?

Yes! reaConverter instantly converts .hfz to .jpeg with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert images directly from Windows Explorer using the right-click menu — fast and convenient.

What is reaConverter used for?

reaConverter is a Windows converter for 800+ formats, GIS data among them. For HFZ to JPEG it replaces the usual detour through QGIS, ArcGIS or ogr2ogr: add the files, pick the output format, and the whole batch converts offline. Surveyors, planners and engineering teams use it to pass data between GIS, CAD and everyday document formats.

Why choose offline conversion with reaConverter?

reaConverter is a software program that is used for offline files conversion. Your proprietary documents never leave your computer – essential for architects, engineers, healthcare and government contractors handling classified projects. Meets GDPR, HIPAA, CCPA, and corporate security policies by ensuring files never cross borders or third-party systems.

Can I convert HFZ to JPEG online?

If you only need to convert a few HFZ files to JPEG format, feel free to try our free online free online HFZ to JPEG converter — perfect for small batches with no installation needed!

How can I turn HFZ files into JPEG on my computer?

The best way to change HFZs to JPEGs on your PC is to install a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from HFZ to JPEG.

How can I automate HFZ to JPEG files conversion?

reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.

Is there a way to convert HFZ files to JPEG using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line hfz to jpeg converter for batch processing.

What else can I do with reaConverter?

Convert medical imagesResize picturesConvert PDF filesAdd watermark on photoConvert DICOM files

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