> For the complete documentation index, see [llms.txt](https://docs.simkl.org/how-to-use-simkl/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.simkl.org/how-to-use-simkl/faq/how-to-add-new-shows-missing-episodes-and-movies-to-simkl/tmdb-for-movies/add-external-ids.md).

# Add External IDs

TMDB allows editors to **link titles with external databases** such as IMDb, TVDB, and Wikidata ensuring proper synchronization and data accuracy across multiple services like SIMKL.

These external links (called **Connected IDs**) are essential for metadata exchange and for keeping related movie and TV entries correctly associated across platforms.

<figure><img src="/files/yYC7F1FgMIxQ2BQpipAa" alt=""><figcaption></figcaption></figure>

***

### Where to Find the “External IDs” Page

To update or add Connected IDs for a movie or TV show:

1. Go to the title’s **main TMDB page**.
2. Open the top menu → **Overview → Edit**.
3. In the left sidebar, click **External IDs**.

<figure><img src="/files/SaZalBxY7faC1YqyYovJ" alt=""><figcaption></figcaption></figure>

You’ll now see a form containing the following fields:

* **Social Links:** Facebook, Instagram, Twitter
* **Other Databases:** IMDb ID, TVDB ID (for shows), Wikidata ID
* **Archived Databases:** Freebase ID, Freebase MID, TVRage ID

<figure><img src="/files/I6zIF2oj3T6W1sl5cRm1" alt=""><figcaption></figcaption></figure>

***

### How to Add or Update an External Link

1. Click inside the empty field for the relevant site (e.g., IMDb or Wikidata).
2. Paste the ID (not the full URL).
   * Example for IMDb → enter `tt37218592` instead of `https://www.imdb.com/title/tt37218592/`
3. Click **Save** at the bottom of the page.

| Platform | Example   | Notes                     |
| -------- | --------- | ------------------------- |
| IMDb     | tt0413300 | Used for both movies & TV |
| TVDB     | 424328    | Only visible for TV shows |
| Wikidata | Q182212   | Global reference database |

***

### For TV Shows

When editing a **TV show**, an additional field appears under “Other Databases” for:\
**TVDB ID:** connects TMDB entries with TheTVDB’s corresponding listing.

This field is especially important for synchronization tools (like SIMKL, Plex) that use both databases to match TV episodes.


---

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