Here are the steps on how to archive Facebook posts (without deleting them):

1. Save Posts: Facebook allows you to save posts that you find interesting or want to revisit later. When you save a post, it gets added to your “Saved” section, accessible from the left-hand menu on the Facebook homepage. Here’s how to save posts:

• Find the post you want to save on your News Feed or a friend’s timeline.
• Click the three dots (…) in the upper-right corner of the post.
• Select “Save post” from the dropdown menu.

2. Download Your Facebook Data: Facebook offers a feature that allows you to download a copy of all your data from the platform, including posts, messages, photos, and more. By downloading your data, you essentially create an offline archive of your Facebook activity. Here’s how to download your data:

• Log in to your Facebook account.
• Click on the down arrow in the top right corner of Facebook (next to the question mark icon).
• Select “Settings & Privacy” and then choose “Settings.”
• In the left-hand menu, click on “Your Facebook Information.”
• Click on “Download Your Information.”

You can customize the data you want to include in your download. To archive your posts, select “Posts” under “Your Information.” You can also choose the format and quality of your download.

• Click on “Create File” to start the data export process. It may take some time, depending on the amount of data you have on Facebook.
• Once the file is ready, you will receive a notification, and you can download the zip file containing your data.

After downloading your data, you can store it securely on your computer or an external drive as an archive of your Facebook activity.

Please note that Facebook’s features and interface may have changed since my last update. I recommend visiting Facebook’s Help Center or checking their latest documentation to get the most up-to-date information on archiving posts or any other features related to preserving your data on the platform.