Convert PGM to HRZ
Convert PGM images to HRZ format, edit and optimize images online and free.
Drop Files Anywhere to Upload
The PGM which stands for Portable Gray-Map is a simple structured grayscale raster image format designed by Jef Poskanzer in the 1980s. It was designed to easily exchange binary images between different platforms.
The HRZ file extension is integral to Slow Scan Television (SSTV), a digital imaging technique used in amateur radio to transmit images via radio waves. The HRZ format efficiently stores images in a 256 x 240 RGB bitmap, making it ideal for low-bandwidth transmissions. SSTV encodes images into audio signals, which are then decoded back into visual files, producing an HRZ file. This technology is crucial for image communication in bandwidth-constrained environments.
Drag & drop any PGM file from your device or click the Choose File button to proceed.
Check the file preview quickly and use PGM to HRZ tools if you need to change the conversion settings.
Wait a couple of seconds for the converter to do the hard job, then download your HRZ file.
To change PGM format to HRZ, upload your PGM file to proceed to the preview page. Use any available tools if you want to edit and manipulate your PGM file. Click on the convert button and wait for the convert to complete. Download the converted HRZ file afterward.
Follow steps below if you have installed Vertopal CLI on your macOS system.
cd to PGM file location or include path to your input file.Follow steps below if you have installed Vertopal CLI on your Windows system.
cd to PGM file location or include path to your input file.Follow steps below if you have installed Vertopal CLI on your Linux system.
cd to PGM file location or include path to your input file.