Listing contains prohibited active content

Error 353 means the listing description contains JavaScript, Flash, or other active content. eBay banned active content in 2017 and rejects any listing that includes it.

Legacy listing templates often include JavaScript (image gallery scripts, countdown timers, cross-sell widgets). Active content is detected by the presence of <script>, on* attributes, or external resources that try to execute code in the buyer's browser.

1. Strip all <script> tags from your description templates.
2. Remove inline event handlers (onclick, onload, onerror).
3. Replace JS image galleries with mobile-friendly multi-image markup.
4. Use eBay's Listing Wizard to generate compliant templates.
5. Resubmit once the description is plain HTML/CSS only.

• iframes that reference legacy gallery widgets
• External CSS that includes @import of a JS-loaded font