I increasingly rely on either Internet Archive's Wayback Machine (which also fails remarcably often to fully, or even partially, present SPAs), or Archive.today (archive.is, archive.fo, and friends), which is painfully slow to acquire content but does manage to render most it attempts.
I increasingly rely on either Internet Archive's Wayback Machine (which also fails remarcably often to fully, or even partially, present SPAs), or Archive.today (archive.is, archive.fo, and friends), which is painfully slow to acquire content but does manage to render most it attempts.