# Diagram code blocks show as plain code instead of pictures for some readers

**What you are seeing**

Diagram code blocks show as plain code instead of pictures for some readers.

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## Why it happens

Rendering a fence needs a Capable client token, which logged-out readers do not have. This is a deliberate degrade, not an error.

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## What to do

Expect code blocks for anonymous readers. Signed-in readers see the diagrams.

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## Settings involved

| **Setting**                   | **Where** | **What it does**                                                                                                                                                                                                             |
| ----------------------------- | --------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Global settings → Permissions | \-        | Controls edit access to the GLOBAL asset store. Which is what governs who may create Global markdown templates. It is shared with diagrams, images, calendar and search because they all use one Confluence custom content t |

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## Limits that apply here

| **Limit**                         | **Value** | **What happens**                                                                                                                                                                                          |
| --------------------------------- | --------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| URL fetch size limit              | 2.5 MB    | A URL-sourced document larger than 2.5 MB is rejected with 413; a disallowed content type is rejected with 415\. The proxy also upgrades http to https, refuses non-http(s) schemes, and blocks IP litera |
| AI diagram repairs per generation | 3         | Only the first three fenced diagram blocks in a generated document are validated and repaired; anything beyond that, and any language outside the seven repairable ones, passes through verbatim.         |

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## Related

[Images inside a markdown document show only alt text with a 'Sign in to view this image' tooltipThe image needs the Capable proxy and the reader has no token. Only relative Confluence pa](https://help.gocapable.com/markdown/images-inside-a-markdown-document-show-only-alt-text-with-a-sign-in-to-view-this-image-tooltip.html)

[Image inside the document eventually turns into '\[Image load timed out: …\]'The image did not load within 15 seconds.](https://help.gocapable.com/markdown/image-inside-the-document-eventually-turns-into-image-load-timed-out.html)

[Everything elseThe rest of this family.](https://help.gocapable.com/markdown/everything-else.html)

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_Found it? Good._