> ## Documentation Index
> Fetch the complete documentation index at: https://docs.letmepost.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# pinterest.cover_image_url.reachable

> The cover image URL on a video pin must return 2xx and a supported image mime.

## What it checks

Before registering the video upload, the publisher GETs `pinterest.coverImageUrl`. The response must:

* Return 2xx
* Carry a content-type in `image/jpeg`, `image/png`, or `image/webp` (mime check fires under [`pinterest.cover_image.mime_allowed`](/preflight/pinterest-cover_image-mime_allowed) when present)

## Why

Pinterest fetches the cover image on its end during pin creation. If the URL is unreachable, returns 4xx/5xx, or serves something that isn't an image, `POST /v5/pins` fails with a generic upstream error. Catching it locally points at the URL specifically.

## Failure response

```json theme={"system"}
{
  "error": {
    "code": "preflight_failed",
    "rule": "pinterest.cover_image_url.reachable",
    "platform": "pinterest",
    "message": "URL returned 404: https://cdn.example.com/cover.jpg",
    "remediation": "Pinterest must be able to fetch the cover image URL; verify it is public and returns 2xx."
  }
}
```

## Remediation

* Verify the URL is publicly reachable from outside your network (no auth, no IP allowlist).
* Don't use Google Drive share links, Dropbox preview URLs, or signed S3 URLs that have expired — same general failure mode as [`instagram.media.reachable`](/preflight/instagram-media-reachable) (`OAuthException 2207052`).
* When in doubt, upload the cover via `POST /v1/media` and use the returned public URL.

## Related

* [`pinterest.cover_image.mime_allowed`](/preflight/pinterest-cover_image-mime_allowed)
* [`pinterest.video.cover_required`](/preflight/pinterest-video-cover_required)