Image-based pixel

Two installs side-by-side. Variant A sends only the token. Variant B uses a different (longer) token and carries the page URL via a u= parameter. No script execution is involved; the browser issues the GET as soon as the parser encounters the tag, so there is no race condition.

Variant A · token only

Minimal install. The server receives the hit but has no URL context for it.

Verdict

Waiting for the image to load…

<img> onload

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<img> onerror

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Network req.

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1×1 pixel rendered here

Event timeline

No events recorded yet…

Install code

<img src="https://staging-api.wire.spbx.app/wire/img?token=KUNDX3kr75Sa2ny%2BLGS8I87Hxv9Hs9cU6ZgCG6iJsKE%3D"
     width="1" height="1" alt="" />

Variant B · token + u parameter

Full install. Uses a different (longer) token and carries the page URL via u=https://test-wire.spbx.app.