Mozilla JPEG Encoder Project オンラインツール https://mozjpeg.codelove.de/ 2MB まで。 インストール CentOS 7.3.1611 へのインストール手順。 curl -LO https://github.com/mozilla/mozjpeg/releases/download/v3.2-pre/mozjpeg-3.2-release-source.tar.gz tar xf mozjpeg-3.2-release-source.tar.gz cd mozjpeg yum install automake gcc nasm ./configure && make && make install
![Mozilla 製 JPEG エンコーダー「mozjpeg」 - Qiita](https://cdn-ak-scissors.b.st-hatena.com/image/square/ff108d37bc321db97cec582d106fe4429d743d54/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fcdn.qiita.com%252Fassets%252Fpublic%252Farticle-ogp-background-412672c5f0600ab9a64263b751f1bc81.png%3Fixlib%3Drb-4.0.0%26w%3D1200%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTk3MiZoPTM3OCZ0eHQ9TW96aWxsYSUyMCVFOCVBMyVCRCUyMEpQRUclMjAlRTMlODIlQTglRTMlODMlQjMlRTMlODIlQjMlRTMlODMlQkMlRTMlODMlODAlRTMlODMlQkMlRTMlODAlOENtb3pqcGVnJUUzJTgwJThEJnR4dC1hbGlnbj1sZWZ0JTJDdG9wJnR4dC1jb2xvcj0lMjMyMTIxMjEmdHh0LWZvbnQ9SGlyYWdpbm8lMjBTYW5zJTIwVzYmdHh0LXNpemU9NTYmcz04ODZiYTg5MzEyNDc1OTE2MTBjMjEzMzNjNDk1MDA4Zg%26mark-x%3D142%26mark-y%3D57%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZoPTc2Jnc9NzcwJnR4dD0lNDBiZXpla2xpayZ0eHQtY29sb3I9JTIzMjEyMTIxJnR4dC1mb250PUhpcmFnaW5vJTIwU2FucyUyMFc2JnR4dC1zaXplPTM2JnR4dC1hbGlnbj1sZWZ0JTJDdG9wJnM9YTkzZTM1ZGI1YTA3MTM2MGZkNTcwNzk4NWY3ZDMxMjY%26blend-x%3D142%26blend-y%3D486%26blend-mode%3Dnormal%26s%3D3ce1f0042e6807b0e89e4378b7e36469)