What is TTFB by device brand
TTFB by device brand tracks Time to First Byte (TTFB) depending on whether the session was redirected. It’s one of the most useful lenses for diagnosing slow initial loads due to:
Chained redirects
Third-party redirectors (like
lnk.to,bit.ly, or email trackers)Inefficient redirect destinations (e.g., non-cached landing pages)
Redirects inherently introduce latency — but if TTFB significantly worsens on these paths, it may signal deeper routing or caching issues.
Healthy TTFB by device brand sample
Should you worry
Ideally, both redirected and non-redirected visits show fast TTFB (green). If there's a slight increase with redirects, that’s normal — as long as it doesn’t tip into yellow or red.
This means:
Your redirects are short, cacheable, and don’t introduce major server-side delays.
You’re using HTTP 301 or 308 redirects efficiently, not 302s with logic that blocks fast delivery.
Edge delivery and CDN logic is well-optimized across all entry points.
Unhealthy TTFB by device brand sample
When redirects lead to slow TTFB, you may be dealing with:
Long redirect chains or misconfigured redirects (especially from marketing or affiliate links).
Non-cacheable redirects that hit the origin every time.
Inefficient target pages — like personalized landing pages that don’t benefit from CDN or static generation.
Legacy HTTP to HTTPS hops that haven’t been streamlined.
Redirects shouldn’t cost users 500+ ms of extra wait time — especially not on first impression.
Resolving unhealthy TTFB by device brand
Go-to action plan to resolve an unhealthy TTFB by device brand:
Ask Uxi to analyze your TTFB by device brand values and suggest improvements.
Use Filters to focus on traffic with high TTFB and known redirect patterns.
Simulate TTFB of the suspected lens to see if fixing it will resolve the TTFB by device brand. If yes, this is where the resolution focus should be.
Use an automated optimization tool like Navigation AI to improve your TTFB by device brand values.
Once you’ve improved TTFB, set an alert to be the first to know if it starts worsening again.
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