Right-click any title anywhere and see instantly whether it is already in your Plex library.
Users
13
+6 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#182K
#152K among extensions
Version
1.0.0
updated 15 Aug 2026
Users
monthly, 2 months
Latest, 21 Oct 2026:13 usersMove the mouse over the chart for any month
Ratings count
monthly, 2 months
Latest, 21 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Plex Library Check - KP.Media
Do you already have it?
If you run a Plex server on a NAS or a home machine, your library outgrew your
memory a long time ago. Thousands of titles across several drives, a 4K library
and a regular one, things you grabbed twice because the second one was a better
release. The question "do I already have this?" comes up constantly, and the
only way to answer it has been to stop what you are doing, open Plex, and
search.
Plex Library Check answers it where the question actually occurs: on the page
you are already looking at.
Right-click a title, a link or a poster - on IMDb, Letterboxd, a shop, a forum,
anywhere - and choose "In my Plex library?". A small window tells you whether
you have it, and if you do, what you actually hold.
WHAT IT TELLS YOU
Not just yes or no. For everything you own it shows the resolution, the codec,
the audio, the bitrate, the file size and where the file lives. Having a film
in 720p is not the same as having it, and when you are looking at a 2160p
release that difference is the whole decision.
It shows every copy, not just the first. If the same film sits in both your 4K
library and your Movies library, you will see both, each with its own title and
year - which is how you find the duplicates you did not know you had.
For a box set it answers the question a box set actually asks: which of these
do I already own? Right-click a seven-film collection and it lists the ones
already on your server.
For television it can answer at episode level, because it asks your server
directly rather than working from a list.
IT READS WHAT YOU MEANT
Pages almost never write a title the way your server does. This handles:
Release names - Mars.Attacks.1996.2160p.BluRay.x265-GROUP
List numbering - "9. Zootopia 2" on a ranked list
Retail padding - "The Thing - Collector's Edition [Blu-ray] (1982)"
Poster labels - the accessibility text on a cover image, including IMDb's
Stylised spelling - Se7en against Seven, Numb3rs against Numbers
Numerals - Part VI against Part 6
Alternate names - National Lampoon's Christmas Vacation when your server
simply calls it Christmas Vacation, and original-language titles
When it is not certain, it says so. A near match is shown as a near match, and
an episode that happens to share a name with a film can never be presented as
that film. A wrong "you already own this" costs you a film you wanted; a wrong
"not in your library" costs you money. It is built to avoid the second one.
NOTHING LEAVES YOUR MACHINE
There is no server behind this extension, no account, and no analytics. The
only network requests go to the Plex address you enter, which is normally a
machine on your own network. Your token is stored locally, sent only to that
address, masked while you type it and never shown again afterwards. You can
clear it in one click.
Access to websites is optional and requested at the moment you save your
server address, for that one address - not for every site you visit. The
extension reads the text of the link you right-clicked, and only then, because
Chrome passes the link's address but never its text, and most addresses are
just an ID.
The code says all of this in plain language at the top of the main file,
including the exact searches you can run to check it.
SETUP
Click the toolbar icon, enter your Plex address and token, press Save and test.
It will tell you how many libraries it found. That is the whole setup.
Not affiliated with Plex Inc. Plex is a trademark of its owner.