# Some readers see "You cannot view this PDF - you do not have permission to view this attachment"

**What you are seeing**

Some readers see "You cannot view this PDF - you do not have permission to view this attachment".

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## Why it happens

Attachments are fetched as the reader, so Confluence's own permissions apply. The app cannot check permission in advance, so the message only appears after the fetch fails.

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## What to do

Grant those readers access to the page and its attachments in Confluence, or move the file to a page they can already see.

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## Settings involved

| **Setting**                             | **Where**                             | **What it does** |
| --------------------------------------- | ------------------------------------- | ---------------- |
| PDF Gallery (admin page, standalone app | Confluence admin > Apps > PDF Gallery | \-               |
| Unlicensed and anonymous access         | Built into the macro registration     | \-               |

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## Limits that apply here

| **Limit**              | **Value**                      | **What happens**                                                                                                                                                |
| ---------------------- | ------------------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Attachment picker size | 250 attachments                | The Existing Page Attachment dropdown lists at most the first 250 attachments on the page. There is no search or paging, so a PDF beyond that cannot be picked. |
| Height dropdown range  | 1 to the document's page count | If the config panel cannot read the document (bad address, permission failure, upload still in flight), the only selectable height is 1.                        |

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## A few things that catch people out

* The Height dropdown can only offer 1 if the document's page count cannot be read.

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## Related

[Published Capable Site has no pop-out, no fullscreen, and text cannot be selectedThe exported viewer is a reduced version: zoom, Slider page navigation and Download only.](https://help.gocapable.com/pdf-embed/published-capable-site-has-no-pop-out-no-fullscreen-and-text-cannot-be-selected.html)

[Admin cannot find any PDF settingsThere are none. The standalone app's PDF Gallery admin page contains only the Introduction](https://help.gocapable.com/pdf-embed/admin-cannot-find-any-pdf-settings.html)

[Permissions and accessThe rest of this family.](https://help.gocapable.com/pdf-embed/permissions-and-access.html)

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_Found it? Good._