From bb0ca5b69bc048ae6999c5dcbb5eadededcc6498 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=8E=AB=E6=A2=A8?=
 <134030054+msl602@users.noreply.github.com>
Date: Sun, 9 Nov 2025 09:09:28 +0800
Subject: [PATCH] Update social-media-tools.md

Add YouTube Playlist Length tool (ytplaylistlength.info)
---
 docs/social-media-tools.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/docs/social-media-tools.md b/docs/social-media-tools.md
index 1f5165b63..27ffe4581 100644
--- a/docs/social-media-tools.md
+++ b/docs/social-media-tools.md
@@ -390,6 +390,7 @@
 * [Playlist Randomizer](https://playlist-randomizer.com/) - YouTube Playlist Randomizer
 * [playlist.tools](https://playlist.tools/) - Reverse YouTube Playlists
 * [YT Playlist Length](https://ytplaylist-len.sharats.dev/) / [2](https://ytplaylist-length.codingdeft.com/) or [Length Checker](https://youtube-playlist-length-calculator.onrender.com/) - Playlist Length Checkers
+*  **[YouTube Playlist Length](https://www.ytplaylistlength.info)** - Quickly find the total duration of any YouTube playlist.
 * [YouTubePlaylistMerge](https://rentry.org/YouTubePlaylistMerge) - Playlist Merge Guide
 
 ***
@@ -739,4 +740,4 @@
 * [4GBs of 4chan Threads](https://archive.org/details/4chan-threads-2009-2012) - 2009 - 2012 Archive
 * [Archive.4plebs](https://archive.4plebs.org/) - 2013 - 2023 Archive
 * [BibAnon](https://vyrd.bibanon.org/) - Vyrd's Archive
-* [Yotsuba Catalog](https://catalog.neet.tv/) - Yotsuba Archive
\ No newline at end of file
+* [Yotsuba Catalog](https://catalog.neet.tv/) - Yotsuba Archive