Level: Advanced
A performance budget sets explicit, agreed-upon limits — total page weight, load time — that design decisions have to respect, rather than treating performance as an afterthought to fix later.
Set Specific, Measurable Targets
A vague goal like "keep it fast" is far less actionable than a specific budget, like a defined maximum total page weight or load time target.
Involve the Whole Team in Setting and Respecting the Budget
A performance budget only works if designers, developers, and stakeholders all understand and actively work within it, rather than treating it as solely a developer's concern.
Check New Design Decisions Against the Budget Before Committing
Evaluating whether a new visual element or feature fits within the existing budget, before it's fully built, prevents costly rework after the fact.
Next step: Use the Page Size Checker to measure your current page weight to establish a realistic baseline before setting a performance budget for future design decisions.