# Big document renders inside a small scrolling box with a '⚠️ Large content detected' banner

**What you are seeing**

A big document renders inside a small scrolling box with a '⚠️ Large content detected' banner.

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## Why it happens

The document is over 500,000 characters, so the macro switches to a fixed 1200px-high scroller and virtualised rendering.

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## What to do

Split the document into several smaller ones, or accept the scroll box.

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## Limits that apply here

| **Limit**                       | **Value**                                | **What happens**                                                                                                                                                                                          |
| ------------------------------- | ---------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Large-document scroll mode      | 500,000 characters                       | Past this the document macro shows '⚠️ Large content detected. Rendering in scrollable mode.' and renders inside a fixed 1200px-high scroll box instead of inline.                                        |
| Virtualised rendering threshold | 500,000 chars ; 1,000,000 chars (large p | Above the threshold the document is chunked (400 lines or 60,000 characters per chunk, fences kept intact) and only visible chunks are rendered.                                                          |
| 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 |

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## A few things that catch people out

* The link icon in the bordered header never renders: it is gated on a comparison that can never be true (the stored value is the URL string, not the literal 'url').

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## Related

[Editor is replaced by 'Invalid markdown provided' naming some other languageThe renderer threw on the current text AND language detection guessed something other than](https://help.gocapable.com/markdown/editor-is-replaced-by-invalid-markdown-provided-naming-some-other-language.html)

[Saving a macro fails with 'Unable to save changes as the loaded markdown is not associated with theThe stored document belongs to a different page than the one you are editing. Typically af](https://help.gocapable.com/markdown/saving-a-macro-fails-with-unable-to-save-changes-as-the-loaded-markdown-is-not-associated-with-the.html)

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

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_Found it? Good._