"The Library of Congress advises people to take the following steps for preserving their digital possessions:
Metadata is data about data. The two types of metadata of most concern for people working on personal archiving projects are administrative and descriptive. Administrative metadata includes information like the file type, file size, and creation date. Descriptive metadata provides information about the artifact or memory, such as who, what, when, where, and why the file is about.
One easy step that makes organizing and searching for files much better is to rename the individual files. Do not change the file extension (.jpg, .pdf, .mp4, etc.), just the file name. "If the photo is important to you, you should rename it with a descriptive name, something that tells you about the content or subject of the photo. There are several ways to rename a file. You could single-click the file icon and type in a new name. On a PC, you could right-click the file to highlight it and select “rename” from the drop-down menu. On a Mac, you could control-click the file, select Info, and change the name in the “info” window" (Ashenfelder, 2013).
Right-click on the image and select “Properties”
In the window that appears, you can change the file name, add tags, write a description, etc.
Open the “Photos” app and double-click on any photo to view it
Click the “Info” button in the toolbar (you can also use the shortcut: Command+I)
Now you can edit any of the following:
Title
Tip: To quickly add titles to photos directly in the main Photos window, choose: View > Metadata > Titles, click the field that appears under the photo when you hover your mouse on it, and then type a name.
Caption
Keywords
Try to reuse the same suite of keywords for your images as this will help standardize your data.
Location
To change a location, search for a different location or drag a pin on the map. You can not assign a location if your computer is not connected to the internet.
Drop an image file into Photoshop
Click on “File” in the top menu, then select "File Info" from the drop-down menu
Add info to any or all of the fields, i.e. title and author information, a description, and copyright information
Save your work!
To make sure your metadata saves, do not select “Save for Web” — this will erase the metadata from the image in order to save it at the lowest file size possible.
* Photoshop uses Adobe’s Extensible Metadata Platform (XMP) to embed metadata into files. "XMP is a file labeling technology that lets you embed metadata into files themselves during the content creation process."
(Artwork Archive, 2021)