The .ZFSENDTOTARGET extension is really an internal shortcut that Windows uses for its built-in ZIP "Send to" command. Instead of storing user data like a normal archive, it acts as a pointer or instruction that tells the Windows Shell to pass selected files to the compressed-folder component and create or update a .ZIP archive. For that reason, double-clicking or trying to edit it directly isn’t useful, because its job is purely to support the context-menu workflow inside Windows. Once the Send to action runs, your data ends up inside a normal .ZIP archive, which you can manage with any compatible archiver, including FileViewPro.

In modern computing, compressed files act as special file containers that shrink data so it is faster to move, store, and share. At their core, they work by detecting repetition and structure in the original files and encoding them using fewer bits. This allows users to pack more into the same disk space or send large sets of files faster over the internet. One compressed archive might hold just one file, but it can just as easily wrap entire project folders, media libraries, or application setups, combined into a single compact unit that is noticeably smaller than the source material. Because of this versatility, compressed formats appear everywhere, from software downloads and backups to email attachments, game resources, and long-term data archives.

Compressed archives only became practical after key breakthroughs in compression theory and widespread adoption of home and office PCs. During the 1970s–1980s, pioneers like Abraham Lempel and Jacob Ziv developed famous schemes like LZ77 and LZ78, demonstrating that redundancy could be removed without permanently losing information. From those early designs came mainstream techniques such as LZW and DEFLATE, now built into a wide range of common archive types. As DOS and early Windows spread, utilities such as PKZIP, created by developers like Phil Katz, made compression part of normal computer use, cementing ZIP as a go-to format for compressing and grouping files. Over time, other developers and companies added new formats that focused on higher compression ratios, stronger encryption, or better error recovery, but the basic idea stayed the same: take one or more files, apply an algorithm, and produce a smaller archive that is easier to move and manage.

On a technical level, compressed files rely on one or more algorithms that are usually described as lossless or lossy. With lossless compression, nothing is permanently thrown away, so it is safe for any information where accuracy matters. Common archive types like ZIP and 7z are built around lossless algorithms so that unpacking the archive gives you an exact duplicate of the source files. In contrast, lossy compression removes data that algorithms judge to be less noticeable to human eyes or ears, which is why it is widely used in streaming media. Even when the formats look different on the surface, all compression is still about capturing structure and similarity so files occupy fewer bytes. In most archive formats, compression is tightly integrated with packaging, so you can both reduce size and preserve a complete directory layout inside a single file.

As computeer and less error-prone. Rather than attaching every file one by one, you can pack them into one archive and send just that, cutting down on clutter and transmission time. When collaborating, this also ensures that the original folder structure and filenames remain intact, so nothing is lost or reordered accidentally. In many cases, applications and support tools automatically generate compressed files when exporting projects, collecting log bundles, or preparing backups. As a result, knowing how to deal with compressed files is now as fundamental as understanding how to copy and paste or move files between folders.

The variety of archive extensions can easily become confusing if you try to match each one with a separate application. Instead of guessing which program to use, you can rely on FileViewPro to identify and open the archive for you. Rather than installing multiple separate decompression tools, users can rely on a single solution that lets them quickly see what is inside, extract only what they need, and avoid damaging or misplacing important files. In everyday use, FileViewPro acts as the bridge between sophisticated compression algorithms and a straightforward, familiar viewing experience.

Looking ahead, compressed files will continue to adapt as storage devices, networks, and user expectations evolve. Newer compression methods are being tuned for today’s needs, from huge scientific datasets to interactive online experiences. Despite all the innovation, the core goal has not changed; it is still about making big things smaller and more manageable. From personal use to professional environments, compressed archives quietly support tasks that would otherwise be slow, awkward, or expensive. By pairing advanced compression formats with an accessible viewer like FileViewPro, the benefits of smaller, smarter files become available to every user, not just technical experts.