HGT → PNG · Windows

Convert HGT to PNG

Batch convert HGT to PNG on an ordinary Windows PC. No GIS licence, no command line, the same settings applied to every file.

Manual HGT to PNG conversion wastes hours. reaConverter automates the process — just add files and click Convert. Everything happens offline on your computer. No uploads, no cloud risks. No command line and no scripting, unlike the usual ogr2ogr route.

DownloadHGT to PNG ConverterConvert
HGT to PNG
Online
.hgt.PNG
4.8

Converting files since 2001

Runs offline — nothing uploaded

Read what our users say →

How to Convert Multiple .hgt Files to .png?

1. Download and Install reaConverter

First, grab reaConverter from the download button below. Installation is fast, and the software runs offline — no account or signup needed.

reaConverter logo
Install reaConverter

2. Load your HGT files

Open reaConverter and add your HGT files. You can load individual files, entire folders, or even nested subfolders.

Drop your HGT files into the window or use File menu to browse and select folders.

Load your HGT files into reaConverter

3. Select PNG as output format

Choose PNG for output and set your save location. reaConverter lets you customize quality and apply edits before conversion.

Select PNG as output format

4. Start HGT to PNG conversion

Hit Convert and let reaConverter do the work. The progress window shows status for each file in real time.

Start Conversion

After conversion, find your PNG files in the output folder. Click 'Show converted files' to open it directly.

Step by step

How It Works

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

Download reaConverter

Technical note

What changes when you convert HGT to PNG

Every cell in an HGT 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. PNG 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 PNG 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 PNG 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 PNG opens on any computer and any phone. reaConverter produces those from HGT in batch, entirely offline.

  • Render every file in a folder to PNG 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
For my game development sprites, I need PNGs with perfect compression. reaConverter lets me fine-tune the color palette and compression level. It even preserves metadata. This is the only converter I trust for my asset pipeline.
Tomás García
Tomás García
Indie Game Developer
My product photos always come out with messy backgrounds. I use reaConverter to convert them to PNG with transparency – it handles the conversion flawlessly. Then I drop them into my e‑commerce templates. Clean, professional, and so easy!
Mark Robinson
Mark Robinson
E‑commerce Owner
I love that reaConverter can convert PDF pages to individual PNGs. I used it to extract images from a scanned document – each page became a high-res PNG with zero loss. It's like magic, but it actually works every time.
Nancy Li
Nancy Li
Satisfied Customer
For professional-grade PNG to WebP conversions, avoid online tools with restrictive quotas. reaConverter delivers batch processing at local disk speeds – the only viable option for frequent use.
Matthew Hernandez
Matthew Hernandez
Satisfied Customer
I design stickers but could never cleanly resize my PNG logos without pixelation. reaConverter’s PNG-to-SVG tool keeps everything sharp—even when scaling up. My Etsy shop looks way more professional now!
Lisa Palmer
Lisa Palmer
Digital Artist
I design logos and need transparent PNGs for clients. reaConverter converts AI and EPS files to PNG with crisp edges and full alpha channel support. The batch processing saves me hours when I have to export dozens of variants. Absolutely essential for any graphic designer.
Laura Chen
Laura Chen
Freelance Designer

FAQ

HGT to PNG Conversion

What are HGT files?

HGT (short for height) is the file extension of elevation data from the Shuttle Radar Topography Mission (SRTM), a NASA mission of 2000 that mapped the terrain of most of the world, from about 56 degrees south to 60 degrees north. The data are cut into tiles, each covering exactly one degree of latitude and one degree of longitude, and every tile is a separate file. The name tells where it belongs: for example, N20E100.hgt covers the area from 20 to 21 degrees north and from 100 to 101 degrees east. The file itself contains only the heights in meters, with no other information. The data come at two levels of detail, about 90 meters per cell and about 30 meters per cell, and they are in the public domain.

What are PNG files?

The PNG (Portable Network Graphics) file format was designed in the mid-1990s as an improved alternative to the previously existing JPG and GIF formats, and as an extension which would be particularly web-friendly. In time, PNG files have gained a wide popularity and are highly appreciated at the moment for their ability to provide a lossless compression of images, which translates in high-quality and detailed renderings.

Can reaConverter convert HGT to PNG?

Yes! reaConverter instantly converts .hgt to .png 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 HGT to PNG 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 HGT to PNG online?

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

How can I turn HGT files into PNG on my computer?

The best way to change HGTs to PNGs 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 HGT to PNG.

How can I automate HGT to PNG 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 HGT files to PNG using the command prompt?

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

What else can I do with reaConverter?

Convert DICOM filesCrop photoVectorize imagesChange bit depthConvert medical images

Related conversions

Other ways to convert HGT files, and other sources that convert to PNG.

HGT to TIFHGT to JPGHGT to PDFBYN to PNGCDF to PNGCRD to PNG
All HGT conversionsAll PNG conversions

Discover More

Beyond format conversion

Batch conversion, editing, and processing across 800+ formats, from RAW and HEIC to DICOM, DWG, and PDF. Everything runs locally, with no cloud and no upload limits.

DownloadreaConverterPurchase

Free trial · Windows 10/11 · v8.0.250 · Files never leave your computer

reaConverter software