Make sure the format is a jpeg these are smaller than bmp and png. You can tell by when you do “save as , file type” choose jpeg this should reduce the size significantly. If already a jpeg you will need to reduce its size by using a graphics package such as paint and shrink the image to 256 K. Please accept my apologies for “geeky terminology “
The maximum file size for an attachment on this forum is currently set to 256KB and you can attach up to three files per post. Usually it’s possible to change the file size by using jpg format or redusing the size of your image. As per the other post, linking via Photo bucket is a good way of getting around this restriction and it makes more efficient use of the file space in this forum (‘cos it’s stored on someone else’s host).