Here are a few options for the description of the WordPress post_tag “社群圖片” in Traditional Chinese, ranging from brief to slightly more descriptive:

**Option 1 (Brief & Simple):**

> 包含所有分享於社群媒體上的圖片。

* **Translation:** Contains all images shared on social media.
* **Why it’s good:** Concise and clear. Gets the point across quickly.

**Option 2 (Slightly More Descriptive):**

> 收集了各種與社群互動相關的圖片，例如分享、轉發、及討論中使用的視覺素材。

* **Translation:** Collects various images associated with social interaction, such as visuals used in sharing, reposting, and discussions.
* **Why it’s good:** Provides a bit more context about the types of images you’ll find.

**Option 3 (Focusing on Practical Use):**

> 標有「社群圖片」的標籤，方便您尋找和瀏覽可用於社交平台，部落格文章或其他社群推廣活動的圖片。

* **Translation:** Tags labeled “Social Media Images,” making it easy for you to find and browse images suitable for social platforms, blog posts, or other social marketing activities.
* **Why it’s good:** Highlights the usability of the tag for users.

**Option 4 (Broad & Inclusive):**

> 所有與社群媒體、網絡互動、用戶生成內容（UGC）相關的圖片都會被標記在此處。無論是貼文插圖、頭像、海報視覺，都包含於此。

* **Translation:** All images related to social media, online interaction, and user-generated content (UGC) will be tagged here. This includes post illustrations, profile pictures, and poster visuals.
* **Why it’s good:** Provides a wider scope and clarifies what the tag is covering. Includes examples to help understanding.

**Recommendation:**

Choose the option that best suits the overall tone and purpose of your website. If brevity is important, option 1 is ideal. If you want to give readers a better understanding of what to expect, Option 2 or 4 are good choices. If the focus is on providing resources, option 3 is the best. Consider the specific types of images used on your site and which tag best fits the content.