Prelander Tests

Each prelander navigates to the auto-redirect page differently. Does the navigation method affect whether Universal Links fire?

Target: https://www.instagram.com/instagram/
Auto page: /link-test?flow=auto&url=https%3A%2F%2Fwww.instagram.com%2Finstagram%2F

A. JS redirect (2s)
window.location.href → auto page
B. Server 302
HTTP 302 redirect → auto page
C. Meta refresh (2s)
<meta refresh> → auto page
D. Anchor click (control)
Real <a> → auto page (should work)
E. location.replace
window.location.replace() → auto page
F. location.assign
window.location.assign() → auto page
G. Anchor new tab
<a target="_blank"> → auto page
H. Form submit
Form GET submit → auto page
QR Code URLs

Create QR codes for each prelander:

js-redirect: /link-test-pre?pre=js-redirect&url=https%3A%2F%2Fwww.instagram.com%2Finstagram%2F
server-redirect: /link-test-pre?pre=server-redirect&url=https%3A%2F%2Fwww.instagram.com%2Finstagram%2F
meta-refresh: /link-test-pre?pre=meta-refresh&url=https%3A%2F%2Fwww.instagram.com%2Finstagram%2F
anchor-click: /link-test-pre?pre=anchor-click&url=https%3A%2F%2Fwww.instagram.com%2Finstagram%2F
replace: /link-test-pre?pre=replace&url=https%3A%2F%2Fwww.instagram.com%2Finstagram%2F
assign: /link-test-pre?pre=assign&url=https%3A%2F%2Fwww.instagram.com%2Finstagram%2F
anchor-newtab: /link-test-pre?pre=anchor-newtab&url=https%3A%2F%2Fwww.instagram.com%2Finstagram%2F
form-post: /link-test-pre?pre=form-post&url=https%3A%2F%2Fwww.instagram.com%2Finstagram%2F
Server Redirect URLs (direct QR targets)

Point QR codes directly at these — no prelander page, just a server redirect to the auto page: