The archive file format known as ISO is a disk image format. It is the popular archiving technology used to archive the contents of every sector of an optical disc or file system. Compatible disk imaging software is often required to author ISO images from an optical disk or file directory. Reading ISO images can then be done with the same disk imaging software either by directly opening the image file or by mounting the image file onto a virtual disk drive typically created by the imaging software. Archived ISO files can be easily distributed on today's high speed internetworks without limitation or as self-contained files via portable hard drives.
The .gz filename extension refers to the GZIP file format and compression/decompression utility of the same name which was initially released in 1992. It is the extension given to files compressed using the gzip utility. Unlike other compression tools of the time, gzip was originally intended to be used as a tool to compress a single file as opposed to multiple files or entire directories compressed as a single archive. As a work around, multiple files can be archived using the TAR archive file format, then that single TAR archive would then be compressed using the GZIP format. This would give the file a filename extension of .tar.gz.
FreeFileConvert uses tuned encoding for ISO to TGZ conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload ISO files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized TGZ results on any device you rely on.
Process up to 5 files sized 1000 MB per batch without splitting queues manually. Mixed-format uploads convert together, producing consistent TGZ audio with dependable progress tracking.
The ISO image format is standardized in ISO 9660. The format does not use compression and data is a sector by sector binary dump of the source file system to the intended target image file. The main external dependency of the ISO format is an operating system that permits mounting of disk image files saved in the ISO format. Such permissions exist on Windows, Linux, and Mac OS through 3rd party tools and utilities.
The GZIP format uses the DEFLATE algorithm for compression. A file in this format consists of a 10 byte header containing the version number, timestamp, and magic number. Other blocks include optional extra header blocks, the DEFLATE payload, and a CRC-32 checksum contained in an 8 byte footer.
Upload your archive file in the ISO format from your device, Dropbox, or Google Drive.
Select TGZ as the output format and click Convert. Adjust optional settings if needed.
Download the converted archive file. Each file stays available for up to 5 downloads.