# Diagram thumbnails on the Apps → Capable Diagrams page appear slowly, one after another

**What you are seeing**

Diagram thumbnails on the Apps → Capable Diagrams page appear slowly, one after another.

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## Why it happens

Preview content is downloaded through a deliberate throttle. At most 2 at a time, 100 ms apart. So a busy site fills in progressively.

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## What to do

This is expected. Wait for the page to settle, or narrow the project and type filters to load fewer items.

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## Settings involved

| **Setting**                              | **Where** | **What it does** |
| ---------------------------------------- | --------- | ---------------- |
| Admin / project / site settings          | \-        | \-               |
| Diagram (gadget configuration). Diagram  | \-        | \-               |
| Diagram (gadget configuration). Language | \-        | \-               |

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## Limits that apply here

| **Limit**                                    | **Value** | **What happens**                                                                                                                                                                                         |
| -------------------------------------------- | --------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Diagram title length                         | \-        | The Title input is capped at 50 characters. Titles are used verbatim as attachment filenames with no de-duplication or sanitisation, so two diagrams with the same title produce two identically named a |
| Browse page size                             | \-        | Each JQL page requests 12 issues and the list reveals 12 rows at a time; Show more loads the next batch. (The shared hook's own default is 50; the Diagrams page overrides it to 12.).                   |
| Concurrent diagram previews on the browse pa | \-        | Diagram content is downloaded one attachment at a time through a throttle, so thumbnails on a busy site fill in progressively rather than all at once.                                                   |

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## Related

[Choosing "Add" skips a "Choose a diagram type" step and drops me straight into an editor with a pickThe type-selection step navigates straight through to the editor and opens the library pic](https://help.gocapable.com/jira-diagrams/choosing-add-skips-a-choose-a-diagram-type-step-and-drops-me-straight-into-an-editor-with-a-pick.html)

[Visio file will not importOnly .vsdx and .vssx are accepted. Legacy .vsd, .vdx, .vss and .vsx are rejected with a me](https://help.gocapable.com/jira-diagrams/visio-file-will-not-import.html)

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

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_Found it? Good._