An exact amount is useful only when its unit matches the component. A paragraph exercises vertical spacing, a sentence tests prose flow, a word count fills a strict text budget, and list items reveal marker alignment and repeated-row rhythm.
Count the content unit, not its wrapper
Three HTML paragraphs mean three generated content blocks wrapped in three p elements. Tags, Markdown markers, bullets, spaces, and line breaks belong to rendering and do not create extra requested units. LoremKit reports content words separately from output code points and UTF-8 bytes.
Use explicit bounds for realistic fixtures
Very large filler documents can hide layout problems behind browser work and unwieldy clipboard operations. The released bounds keep output responsive and inspectable: 50 paragraphs, 200 sentences, 5,000 words, or 100 list items at most. Split larger test data into deliberate fixtures.
Replace filler text before publishing
Placeholder text reveals spacing, wrapping, rhythm, and component capacity, but it cannot prove that real copy is clear, accurate, accessible, translated, or legally sufficient. Review the final layout again after authored content replaces every generated block, especially headings, links, labels, alternative text, and validation messages.