Each topic in a mind map can hold additional information in the form of notes, links, comments, and even attachments. To attach a file, follow the steps as outlined below:

Uploading attachments is possible on MindMeister's Personal, Pro or Business Subscription plans.

On iOS (iPhone):

1. Open the mind map and select the topic you want to add an attachment to. 

2. Tap on the Image button at the bottom of the screen, then tap on Add media...

3. Choose a source: You can retrieve media files from your connected Dropbox or iCloud accounts, from your Photo Library, or from your Camera (by taking a new photo right then and there). 

The moment you select a file, it's added to the topic in your map. You can then add another file if you want. 

Once you've attached a file, you'll notice a small paperclip icon has appeared inside the topic. This is the attachment indicator, which you can click on to quickly view the attached file(s). 

On Android:

1. Open the mind map and select the topic you want to add an attachment to.

2. Tap on the Image button at the bottom of the screen, then tap on Add media...

By default, your device will show a list of your Recent Files, but you can tap on the menu button in the upper left corner of the screen to choose a file from another source, such as your Images or Downloads folder, your connected Google Drive™ account, or your Photos. 

3. Select the file you want to attach. As soon as you've selected a file, it will appear in your attachment list. You can then add additional files if you want.

Once you're done adding files, you can go back to the map by clicking on the back button in the upper left corner of the screen. 

You'll notice that a small paperclip icon has appeared inside the topic. This is the attachment indicator, which you can click on to quickly view the attached file(s).