Reduce can resize images as well as decrease their quality to make them more suitable for mobile uploads/sharing. You can strip Exif data off an image, determine its file size by KB or JPEG quality, ...
On MS Word, you can save a thumbnail image for a Word document ... If none of the aforementioned methods help and you need to reduce the size of your Word file a bit more, you can always compress ...
However, you can still compress videos using a third-party app. Here's how: Once the process finishes, you can see the difference in file size and share ... expense of some image quality.