Resizer v2: how to resize an external image whose URL requires query parameters?

[iwebwolverine]

Summary

We're using Resizer v2 with external (non–Photo Center) images via the Signing Service. Our source is a dynamic endpoint that has no path parameters, only query parameters, and those query params are required to retrieve the image. We can't get it to work and we're unsure whether Resizer v2 supports this case at all.

The source image

https://example-url?pSetup=WEBSITE&getprima&editionname=SPECIFIC_PARAM

There is no path segment identifying the image the ?pSetup=…&getprima&editionname=… query is what tells the origin which image to return.

What we tried

1. Signed the full raw URL via the Signing Service (/signing-service/v2/sign/resizer/{version}?value=<raw url>) → got a hash.
2. URL-encoded the whole URL once and placed it in the resizer path.
3. Added the transform + auth query params.

Core question

When Resizer v2 fetches the external source image server-side, does it forward the source URL's own query parameters (pSetup, getprima, editionname) to the origin, or does it strip them?

Our origin needs those params to return the image, so if the resizer requests only https://example-url.com/ without the query, the fetch comes back empty/wrong and resizing fails.

Follow-ups

1. If query params are forwarded: what exact string must the Signing Service sign — the base URL without the query, or the full URL including the query?
2. Does Resizer v2 distinguish its own transform params (auth, width, height, smart, quality, …) from arbitrary pass-through params, and forward only the unknown ones to the origin?

Any confirmation, or a working example of a query-string external source, would be a big help. Thank you!

[javiergoni]

Hi @iwebwolverine, you need to use the encodeURIComponent function both to get the hash and when creating the resizer URL.

1- /signing-service/v2/sign/resizer/{version}?value=encodeURIComponent(<raw url with query parameters>) -> got a hash
2- /resizer/v2/encodeURIComponent(<raw url with query parameters>)?auth=<hash>&<any other parameters for the resizer>

Hopes this helps.
Javier