# A diagram language is missing

A language missing from the editor picker is almost always an administrator toggle rather than a fault. Thirty-one languages is a lot for one menu, and many sites deliberately shorten the list.

TikZ is the special case: it is off by default everywhere, because rendering it runs a full TeX engine.

---

## What you are seeing

* A language you have used before is no longer in the list.
* A language you expected has never appeared.
* TikZ specifically is missing.

---

## Work through these in order

| **Check**                        | **What it means and what to do**                                                            |
| -------------------------------- | ------------------------------------------------------------------------------------------- |
| Is it TikZ?                      | TikZ ships disabled. An administrator turns it on in the site settings.                     |
| Has an admin shortened the list? | Site settings have a toggle per language, and presets that set the whole list at once.      |
| Was a preset applied?            | Applying a preset replaces the whole list, including anything previously turned on by hand. |
| Do existing diagrams still work? | Yes. Disabling a language never stops existing diagrams rendering or opening.               |

---

## A few things that catch people out

* Turning a language off only hides it from the picker for new diagrams.
* Two admins saving language settings at the same time can overwrite each other, because the whole list is written.
* The toggles and presets are documented in [Administration](https://help.gocapable.com/diagrams/administration.html).

---

## Related

[Lost or unsaved diagram changesRecovering work that did not save.](https://help.gocapable.com/diagrams/lost-or-unsaved-diagram-changes.html)

[Diagram missing from searchIt exists, but search cannot find it.](https://help.gocapable.com/diagrams/diagram-missing-from-search.html)

[ExamplesWorking diagrams you can copy.](https://help.gocapable.com/diagrams/examples.html)

---

_Most of these take under a minute._