20+ excellent tools for optimizing images

Smush.it!

Smush.it uses optimization methods for a particular image format to remove unnecessary bytes from image files. It is a lossless optimization tool, which means that it optimizes the image, does not change the appearance or visual quality. Smush.it works on a web page. The application reports how many bytes will be saved by optimizing the image of the pages and provides a downloadable Zip file with the processed files.

RIOT

RIOT is an abbreviation for the Radical Image Optimization Tool. Image Optimizer for Windows users, which is available as a stand-alone application or as an extension for IrfanView. The application supports JPG, PNG and GIF files and is able to cut out the metadata image for further file reduction. Also has utilities that allow you to perform basic types of image editing, such as scaling and rotation and reflection.

PNGOUT

PNGOUT is a public, free, no-frills, tool for optimizing your images. You can run PNGOUT on the Windows command line or in the Run dialog box. It has a wide range of file compression options. Most of the popular graphic file formats (such as JPG, GIF and PNG) are supported. You can add a / zl121 to pngout for compatibility with old png parsers. To repackage jar, you can use kzip with the same / zl121 key. And pngout, and kzip wrote Ken Silverman.

Online Image Optimizer

Online Image Optimizer from Dynamic Drive is a web-based image compression tool. You can specify a link to the image that you want to optimize, or download it from the local folder. In addition to optimizing, you can select the type of the resulting file (by default, the same file type is obtained). There is a limit on the size of the file - 300 KB.

SuperGIF

SuperGIF is a free utility for Windows and Mac OS that helps to optimize GIF. Has an intuitive and simple user interface, can compress GIF by 50% or more. In a free version, you can optimize only one image at a time, but otherwise has the same functions as the commercial version ($ 29.95), except for batch processing.

PNGGauntlet

PNGGauntlet is a .NET application for PNGOUT. It can be used to convert JPG, GIF, TGA, PCX, BMP and optimize the contents of PNG files. PNGGauntlet is ideal for those who are not used to working through the command line, but still would like to take advantage of the improved PNGOUT optimization algorithm.

SuperPNG

SuperPNG - a free plug-in for Photoshop, which allows you to save PNG in a much more compact form. It also includes some advanced features, such as support for 16-bit color, variable compression, gamma correction, and metadata.

Pngcrush

There are no pictures, as this plugin works from the command line. Works on UNIX, LINUX and MS-DOS. Optimizes PNG. Uses various compression methods, can delete unwanted auxiliary blocks. Pngcrush has open source code.

OptiPNG

OptiPNG - as the name suggests, the PNG optimizer. This program also converts other formats (BMP, GIF, PNM and TIFF) to optimized PNG, and performs integrity checks and patches. Has open source code, is distributed by zlib / libpng license.

Punypng

Web service for PNG, JPEG and GIF compression. From the latest updates: Preview the quality of the resulting image. Removing your image from the server after 15 min. After conversion. Support for transparency.

ImageOptim

Application for Mac-OC. Processes PNG, JPEG and GIF animation. ImageOptim combines various optimization tools: AdvPNG from AdvanceCOMP, OptiPNG, Pngcrush, JpegOptim, jpegtran from Libjpeg, Gifsicle and optionally PNGOUT. Open Source on GPLv2. Supports convenient drag'n'drop images to your window.

Pngre

Optimizer graphics in PNG format. Also converts GIF and BMP to PNG. Allows you to thinly manually or automatically adjust the size of a PNG file.

Pngquant

It works from the command line. Can only one, converts 32-bit PNG with alpha transparency to 8-bit palette PNG with alpha transparency. But it does it very well, much better than Fireworks, although it's also not without problems.

PictureBeaver

PictureBeaver automatically optimizes web graphics (in PNG, GIF and JPEG formats) by deleting auxiliary data from the files that do not affect the display. Usually it is possible to achieve a reduction in the amount of files by 10-30%. GIF without animation is translated into PNG, if such files are less. For optimization, free utilities OptiPNG, jpegtran and Gifsicle are used.

Color quantizer

Color quantizer is a small program that allows you to easily optimize images for the web. Main features: converting to an arbitrary number of colors; Support for writing png8 with transparency; The ability to set a quality mask for important sites; Convenient editing of the palette; Automatic selection of optimal parameters for PNGOUT

Gifsicle

This is a tool for GIF-app. Basically - for different UNIX. Ported and under Win, but this version is not supported.

A couple of examples:

• Trim the transparent frames: gifsicle --crop-transparency src.gif> dest.gif
• We compress the animated (simple too it is possible ... on some byte) GIF: gifsicle -O2 src.gif> dest.gif

Jpegtran

And this is for JPEG. Official program from the Independent JPEG Group.

Webify

The shell for free console utilities - pngout, jpegtran, gifsicle, which, without changing the quality of images, removes unnecessary meta information and uses additional compression algorithms.

PngOptimizer

Very handy optimizer for Windows. Compress PNG, convert to PNG from BMP, GIF, TGA. Allows you to make PNG screenshots.

TweakPNG

TweakPNG is a low-level utility for studying and changing PNG files. For Windows 2000 or higher. In order to use it, you need at least a little understanding of the PNG format. According to the stalkers it helps a lot with the PNG saved in Photoshop CS2. The fact is that the versions of the photoshop below CS3 add any garbage to the file, incl. And darkening data. As a result - in IE, the picture looks darker than in other browsers, because All others read only the picture directly. With the help of the utility, you can simply delete it. You can also drop comments such as "edited in Adobe Photshop". In addition to getting rid of glitches, we will also get a small gain in the amount.