is Now a huge number of tools which help to optimize pictures and to convert them from one format into another. Many of them allow to perform optimization, without losing at the same time quality.
1 ) Image Compressor (imagecompressor.com) & mdash; for JPEG and PNG files, it is possible to download up to 20 images for 1 time.
2) of Iloveimg (iloveimg.com) & mdash; JPG, PNG, GIF. 15 pictures for not authorized users for 1 time. At authorization & mdash; 30. It is possible to load a photo from Google Drive and Dropbox.
3) Compressjpeg (compressjpeg.com) — до 20 изображений .jpg или .jpeg за 1 раз.
4 ) JPG Zipper ( of zip.yutex.ru ) & nbsp; & mdash; service for compression of the JPEG files. The coefficient of optimization varies: big images from 500 KB can be squeezed without loss of quality to ~ 100 KB.
5 ) Tinypng ( of tinypng.com ) & mdash; for 1 time up to 20 images of PNG and JPG. Pro the account will cost $25 a year.
6 ) Kraken ( of kraken.io ) & mdash; it is possible to squeeze as one, and several files. Function of optimization of pictures from a web resource is available: for this purpose it is necessary to specify website URL, then it is simple to keep archive with already optimized images.
7) of Pich of old ( of pichold.ru ) & mdash; in fact, this tool reduces the picture size, but not her weight (for example, there were 600х600 pixels, and there was also mdash; 400х400).
8 ) I of mageOptim ( of imageoptim.com ) & mdash; for JPEG, SVG, GIF and PNG. Allows to optimize several images at once. The decision in a look ON for Mac.
9 ) of IMG of online (imgonline.com.ua) & mdash; one more service reducing the weight of pictures. Works with such formats as BMP, GIF, JPEG, PNG, TIFF.
10) Compressor (compressor.io) & mdash; works with the JPEG, PNG, GIF, SVG formats. Without loss of quality it is possible to squeeze only images of JPG and PNG. But the efficiency of reduction of weight leaves much to be desired: in any other service you receive + 4-10 more % to compression.
11) Webresizer ( of webresizer.com ) & mdash; the service intended for optimization of images of JPEG, PNG, GIF with a possibility of change of their sizes. Width by default & mdash; 400px.