一个免费的在线工具，用于调整图像大小并裁剪照片。
How to Redimensionar a photo for Facebook / How to change cover photo on Facebook
From the tool given below, select menu and choose the option you require to Redimensionar the image to exact dimensions. You can also click on Manual Redimensionar option to Redimensionar the picture in the assigned size. Use cropper to crop the photo.