November4
A lot of folks do not know that there is a file manager in MODX or that you can use it to upload things. The following was written to assist a client but the principles apply to any MODX user. One caveat, you must set permissions on the folder that you wish to upload to, to allow you to upload. If you do not know how to do that then you need to ask your webmaster to do it for you. Until that happens, the upload feature will be inhibited. It will give you a message telling you that you do not have permission to write to that directory.
All right, so when you login, you will see the home screen in the manager.

Click “Elements.” then click “Manage Files”

Then under “Files” click “Assets”

and under that you will click “Images”

Nearly all MODX Evo installs have the images folder in this place in their directory structure. It is the folder that works with the built-in image editor. I am assuming that you want to add images to work with this built-in image manager. Most of the time the template images, or images that work with your css and templates will be located under “templates” in a subdirectory named for the template you are using. Those are not accessible to the main image editor/browser. So if you want to delete or change a template image then you will need to look there and use this file manager or ftp to delete or replace it.
You can create subdirectories in your images folder using the MODX image library browser in your Rich Text Editor (and we recommend it) to organize your images. In this example we are working with product images, so we will have several subdirectories, including a thumbnail directory.
Say you need to upload all of the thumbnail images. Click on the thumbnail subdirectory link and that opens the thumbnail folder. You can always figure out where you are in the directory structure by looking at the path at the top of the page.

Then you will need to scroll all the way down to the bottom. There you will see “Choose File.”
When you click that, you can browse to your folder on your computer and choose the file you wish to upload. When you do this then it will add the file name to a list at the bottom. It will not upload the files until you click Upload.

You can choose more than one file and when you are finished click “Upload file”

When you are finished, you should see a success message at the top of the page.

I would do the upload in small batches of two or three so you don’t overload the system if you are uploading bigger images (over 100K or over 500 px wide or tall) . You can experiment and see how many it will handle, it will vary with your server capabilities and your own computer’s bandwidth. If the upload takes a long time or you do not see a success message then you are probably timing out and the image is too large. Size the image down by saving it for web in Photoshop or Photoshop elements, or adjust your maximum upload size in the MODX main configuration area and this should solve the problem.
You may have guessed you can upload doc and pdf files the same way. To put them into your file library that is accessible in your rich text editor, you will upload them to assets/files. Videos are usually placed in assets/media.
Happy MODX’ing.