| Message | Meaning and fix |
|---|---|
| Unsupported media type. | Only JPEG, PNG, WEBP, MP4 and MOV files are accepted. |
| The file is empty or larger than the 500MB limit. | Pick a smaller, non-empty file. |
| The file name doesn't match its type. Use a .jpg, .png, .webp, .mp4 or .mov file. | The extension and the real content disagree. Re-export the file. |
| <file> is a Windows program, not a photo or video | That file is not media (also: a PDF, a web page, a zip, an SVG…). Choose a real photo or video. |
| <file> is a GIF, which these platforms don't accept | Convert to MP4 or a still image. |
| <file> isn't a supported photo or video (JPEG, PNG, WebP, MP4 or MOV) | Re-export in one of those formats (HEIC from an iPhone must be converted). |
| <file> wasn't uploaded. Please add it again. | The upload did not finish (network drop). Add the file again. |
| <file> is empty or larger than the 500 MB limit. | As above. |
| <file> … It was removed. Choose a different file. | Postalu checked the stored file and it was not what it claimed to be. |
| Upload failed for <file> (status) / network error | Your connection dropped. Check it and try again. Large files need a steady connection. |
| Invalid media reference. | Reload the page and add the media again. |
- Keep the page open while the progress bar runs.
- On a flaky connection, upload fewer or smaller files at a time.
- A file rejected here is never stored.
Read next
- Photo and video requirements, and why a file is blocked or warned about Accepted formats, the 500 MB limit, the length and shape checks, and every message you can see.
- Messages when you press Continue, Review or Publish The checks Postalu runs on a post before it is sent, with the exact message for each.
