> ## 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.

# instagram.media.image_size_max

> Each Instagram image must be ≤ 8 MB.

## What it checks

`byteLength <= 8_000_000` per image item.

## Why

Meta's Instagram container endpoint caps photo containers at 8 MB. Larger payloads are rejected at container creation.

## Failure response

```json theme={"system"}
{
  "error": {
    "code": "preflight_failed",
    "rule": "instagram.media.image_size_max",
    "platform": "instagram",
    "message": "Image is 9500000 bytes; Instagram allows at most 8000000."
  }
}
```

## Remediation

Re-encode at lower quality or smaller dimensions:

```sh theme={"system"}
magick input.jpg -quality 85 -resize 2048x2048\> output.jpg
```

## Related

* [`instagram.media.mime_allowed`](/preflight/instagram-media-mime_allowed) — JPEG-only.