Uploads not working in the product customizer
Fix issues where customers cannot upload images or PDFs in the Chamevo product customizer, and understand what each upload error message means.
Updated April 29, 20265 min read
When customers try to upload images in the product customizer, the upload may fail silently, show an error, or produce a broken image on the canvas. This guide covers the common causes.
Symptoms
- The upload button does nothing or shows a loading spinner that never completes.
- An error message appears after selecting a file.
- The uploaded image appears as a broken placeholder on the canvas.
- Uploads work for administrators but not for logged-out customers.
Match the error message
From Chamevo 2.8.1, failed uploads show a clear message instead of a technical error. Find the message your customer sees:
| Error message | Go to |
|---|---|
| "The file exceeds the maximum upload size of X MB allowed by the server." | Cause 1 — server limit |
| "File too large. Maximum size is X MB." | Cause 1 — Chamevo or server limit |
| "PDF file is too large. Maximum size is X MB." | Cause 1 — PDF limit |
| "You need to be logged in to upload images!" | Cause 2 — login required |
| "Suspicious content detected in PDF file." | Cause 3 — PDF security scan |
| "Server response missing pdf_images" |
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