UpdraftPlus
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PNGQuant – to strip unneeded chunks from PNGs. PNGQuant is a lossy compression library for PNG images. This library preserves a full alpha transparency.
JPEGOptim – provides lossless optimisation it is one of the most efficient library for JPG conversion among JpegTrans, mozjpeg and jpegrescan.
OptiPNG It’s a PNG reducer that’s used by lot of online optimisers.
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Speed up and optimize your WordPress website. Cache your site, clean the database and compress images
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Centrally manage all your WordPress websites’ plugins, updates, backups, users, pages and posts from one location