The layout moves while the page is loading

01The problem

Cumulative layout shift is high enough that content jumps under the visitor's cursor.

Shifting layouts cause mistaken clicks and make a page feel unfinished. When the conversion control moves, the mistap lands somewhere else entirely.

02How Leakly detects it

A structural fact counted in the rendered page, or a measurement against a threshold. Confidence ceiling for this detector family: 96%.

03Proof required

• A measured number, with its unit and the threshold it crosses.

Without it, the finding is not reported.

04How to fix it

Stop the layout moving during load.

1. Reserve space for images, embeds and injected banners before they arrive.
2. Load fonts with a metric-compatible fallback so text does not reflow.

Each audit that finds this leak includes the exact element, a suggested change and, for copy, a rewrite you can paste.