Troubleshooting Image Fetch Failures & CDN 502 Errors in Showoff – ASP Knowledge Base

Image fetch failures and CDN 502 errors can disrupt your event site’s content, affecting the experience for both visitors and editors. This guide explains common causes, practical solutions, and best practices to ensure your ASP Showoff-powered website remains reliable and visually compelling.

Understanding Image Fetch & CDN Issues

Certain browsers, tools (like cURL), or large original images can trigger 502 errors or failed fetches on content delivery networks (CDNs). These issues can:

Prevent images from loading correctly.
Negatively impact SEO.
Degrade the user experience for visitors and event managers.

Ensuring consistent image delivery requires addressing compatibility and file size concerns.

Key Solutions for Reliable Image Delivery

Use correct HTTP headers: Include the Accept header specifying formats like avif, jpeg, webp, or apng.
Resize via URL: For direct image links, add /fit-in/[width]x[height] to request a resized variant.
Minimise file size: Upload smaller images when possible to reduce fetch failures and improve load speed.
Cross-browser testing: Check pages in multiple browsers and tools after upload to ensure compatibility.

Optimising Images for Showoff CMS

Compress images without noticeable quality loss.
Use common file types such as JPEG or PNG.
Descriptive file names improve SEO and reduce errors with CDNs.

Following these steps improves load times, reduces fetch failures, and enhances your site’s SEO and user experience.

Troubleshooting Quick Checklist

Seeing 502 errors from image URLs? → Resize or re-upload the image.
Image fails to load in cURL or non-Chrome browsers? → Check headers or use /fit-in/ resizing.
Persistent issues? → Contact ASP support for CDN-specific guidance.

Conclusion

By optimising images, setting correct headers, and following best practices, you can maintain robust, error-free event sites that deliver high-impact visuals across all devices. For advanced troubleshooting or personalised support, ASP’s team is ready to assist.