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FileOptimizer is a broad format file compression tool used to reduce file size without changing the quality, known as "lossless." This is done via wide variety of optimization and recompression tools and techniques. Original files are sent to the recycle bin for restoration in the event the uncompressed version is preferred. A list of the 400+ supported formats include audio/video (MP3, OGG, M4A), image (GIF, JPEG, PNG), office formats (DOCX, XLSX, ODT, PDF) and system files (DLL, EXE).

Supports drag-and-drop of files into the window or onto the program icon. Note that by default the program removes metadata for many file types. This information reduces overall file size and protects privacy but is important to some users (e.g. photographers) and file search tools.

A 64-bit version is available within the folder, the author reports the program is functional in WINE, and can be used on the command line. Many images here on TPFC including our logo have been compressed using FileOptimizer.

XMedia Recode is an audio/video converter for most popular formats and includes handy profiles for popular mobile/tablet devices such as iPod, iPhone, Samsung, SonyEricsson, Zune, PSP, Blackberry, LG etc. These profiles include file format, screen size and other details chosen specifically for a given player.

Support many formats.

Note: This program was a member of the FFMPEG "hall of shame" for license issues.

Mp3tag views, edits and filters metadata for common audio formats. Information can be manually added, removed, imported and exported to a variety of formats. The program supports online freedb database lookups for selected files, allowing you to automatically gather proper tag information for select files or CDs. It can also rename files based on the tag information, replace characters or words from tags and filenames, import/export tag information, create playlists and more.

The program can even generate playlists from provided audio files. Supports ID3, Vorbis Comments, APE, MP4 and TAK Lossless.

RIOT (Radical Image Optimization Tool) presents a before-and-after image compression view that allows you to reduce file size of an image into JPG, PNG, or GIF format. Includes optional metadata removal, batch operations, compression to a target file size, transparency options, and other common editing functions (flip, rotate, zoom, pan). Notable versus similar software in the ability to gradually reduce the available colors one-by-one (7, 8, 9, 10...), not just milestones of 16, 32, 64 etc.

The program is also available as a plugin for XnView, GIMP, or Irfanview (see website).

Functional in Linux using Wine. Many of the official entries here on PortableFreeware have used RIOT for compression. Note that the installer version of this program is considered adware.