Performance Scanner · 12% weight
Every second costs you visitors
A 1-second delay in page load reduces conversions by 7%. BAZY measures real load times and identifies exactly what's slowing you down.
The business impact
Amazon found that every 100ms of latency cost them 1% in sales. Your visitors are just as impatient — 40% abandon a site that takes more than 3 seconds to load.
What we check
- Page load time — measured from our servers, flagged if over 1.5s/3s/5s
- HTML page size — large pages slow parsing and increase bandwidth costs
- Compression — gzip or brotli enabled (3-5x size reduction)
- Cache headers — Cache-Control set to avoid re-downloading on every visit
- Image formats — flagging BMP/TIFF, recommending WebP/AVIF
- Image dimensions — width/height set to prevent layout shift (CLS)
- Render-blocking resources — too many blocking stylesheets delay first paint
- HTTP/2+ — modern protocol for faster parallel loading
How scoring works
Load time is the heaviest factor — a page under 1.5 seconds gets full marks, while anything over 5 seconds scores zero for that check. Compression and caching are high-impact, low-effort fixes that heavily influence the score.
Quick wins
The fastest improvements are usually: enable gzip compression (one server config change), add cache headers (one line), and convert images to WebP. These three changes alone can cut load times by 50% or more.