
Hi O'Neale Connolly,
Good day! Welcome to Q&A forum.
The "Couldn't upload your image" error when trying to add an image as a background in a SharePoint section can occur due to several reasons.
1. Unsupported Image Format or Corruption
- SharePoint may reject images if they are in an unsupported format (e.g., HEIC, CMYK JPEG) or corrupted.
- Solution: Upload the image with a standard format like PNG, JPEG, or GIF.
2. Image Size or Dimension Limits
- SharePoint has implicit limits on image dimensions (e.g., width/height ≤ 4096px) and file size (typically ≤ 10MB).
- Solution: Resize the image to smaller dimensions (e.g., under 1920x1080 pixels). And upload a small image.
Hope these information helps.
Please do let us know if you have any further queries.
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