You added numerous people to your Facebook friends list, and while some accepted your invitation right once, others did not. Now you want to know if the folks who didn’t respond to you were indeed “rude” to you or if they aren’t on social media and so haven’t seen your request: In a nutshell, you’re seeking a way to determine whether or not a non-friend on Facebook is online or not may this discussion help you to find it.

To begin, let’s clarify something: Facebook does not allow you to check a person’s online status if they haven’t been added to your circle of friends for privacy concerns. Despite this, various “tricks” can be used to try to “spy” on users who aren’t on Facebook’s friend list and so gather information about their online activities.
To be clear, the “route” to take is far from simple, and the chances of success are slim. In any event, as they say, there’s no harm in giving it a shot! So, what are your thoughts? Still, want to know how to see if a “non-friend” on Facebook is online? So, get comfy, take as much time as you need to read through this discussion, and try to put the “advice” into practice.
Checking the publishing of your posts is the first “technique” you may use to see if a “non-friend” is online on Facebook. When a post is shared on Facebook, the time it was shared (ex. Now, 1 minute, etc.) Is also indicated: It may be determined from this information that the person was online on Facebook at the time and he/she might still be alive if it hasn’t been a long time since the publication was published.
To see this type of information, at least two conditions must be met: first, the post must have been published recently (otherwise, you’ll only see the publication date, not the exact time), and the user who posted must not have changed any privacy settings that hide their public information (including posts) from those who aren’t on their friend's list. By the way, if you want to see what information you can hide by altering any of these settings, visit the tutorial where I explain how to hide Facebook activities in full.
How to See if Someone is Online on Facebook Without Being Friends
1. Send a Message on Messenger
Even though, as we’ve already mentioned, the approaches we’ve shown in the previous lines can allow you to act in complete anonymity, they aren’t “infallible” options for determining whether a user is online on Facebook. If you want to try a more dependable way and are prepared to give up your “invisibility,” We recommend sending a message to the individual whose online presence you’re looking for on Messenger.
You can view successful read alerts confirming their online presence by sending a message to the person you want to spy on. If the recipient sees the message you sent, it will show underneath the recipient’s name. [Now] (From PC) or a thumbnail of the user’s profile photo (from the mobile).
2. Check Comments
Another method for determining whether or not a non-friend is online on Facebook is to look at the time he commented on a post. Because the user in issue is not a friend, Facebook will not immediately suggest the posts on which they have recently commented, and you will have to search for them yourself.
As you may imagine, this could be a demanding and challenging task. However, if the user you’re “spying on” is a friend of a friend (pardon the pun), the process becomes easier: you’ll be able to identify the postings that have been remarked on more readily, and you’ll be able to see the date and time they were written once you’ve found them.
