Sentry.io

Images stored on S3 (or another CDN) show as blank in Session Replay. Network checks may show status code <code>0</code> for those image requests.

Images hosted on S3 or another cross-origin CDN

- All SaaS Customers and Self-Hosted Users
- JavaScript SDK (browser)
- Session Replay
- Images hosted on S3 or another cross-origin CDN

Images in the replay look blank or broken

Image requests from the Replay player show status code <code>0</code>

- Images in the replay look blank or broken
- Image requests from the Replay player show status code <code>0</code>
- The rest of the replay may still play

Session Replay plays in an iframe on <code>sentry.io</code>. External images must be fetchable by that origin.

Add <code>https://sentry.io</code> to the CORS policy on your image host (for S3, set <code>Access-Control-Allow-Origin</code> so the Replay player can load the objects). See <a href="https://docs.sentry.io/platforms/javascript/session-replay/troubleshooting/" rel="nofollow noopener noreferrer" target="_blank">Session Replay troubleshooting</a>.

If your bucket or CDN also blocks hotlinking by <code>Referer</code>, allow requests from Sentry’s player, or adjust the page <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Referrer-Policy" rel="nofollow noopener noreferrer" target="_blank">Referrer-Policy</a> (not built or maintained by Sentry) so those requests are not stripped in a way your host rejects.

Confirm Replay privacy is not blocking media. Default <code>blockAllMedia: true</code> redacts images. Use <code>blockAllMedia: false</code> or <code>unblock</code> selectors only when that matches your privacy requirements (<a href="https://docs.sentry.io/platforms/javascript/session-replay/privacy/" rel="nofollow noopener noreferrer" target="_blank">Privacy</a>).

1. Add <code>https://sentry.io</code> to the CORS policy on your image host (for S3, set <code>Access-Control-Allow-Origin</code> so the Replay player can load the objects). See <a href="https://docs.sentry.io/platforms/javascript/session-replay/troubleshooting/" rel="nofollow noopener noreferrer" target="_blank">Session Replay troubleshooting</a>.
2. If your bucket or CDN also blocks hotlinking by <code>Referer</code>, allow requests from Sentry’s player, or adjust the page <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Referrer-Policy" rel="nofollow noopener noreferrer" target="_blank">Referrer-Policy</a> (not built or maintained by Sentry) so those requests are not stripped in a way your host rejects.
3. Confirm Replay privacy is not blocking media. Default <code>blockAllMedia: true</code> redacts images. Use <code>blockAllMedia: false</code> or <code>unblock</code> selectors only when that matches your privacy requirements (<a href="https://docs.sentry.io/platforms/javascript/session-replay/privacy/" rel="nofollow noopener noreferrer" target="_blank">Privacy</a>).

After CORS (and any Referer rules) allow <code>sentry.io</code>, open a new replay and confirm the images load.

If the entire replay canvas is blank, see <a href="https://www.sentry.help/en/articles/13964138-why-are-my-replays-blank">Why are my replays blank?</a>.

[JavaScript] Why are my Session Replay images blank?

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[JavaScript] Why are my Session Replay images blank?

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