CSS Line Height Previewer
Preview line-height values against real paragraph text.
Find comfortable line-height
Line-height (leading) is one of the biggest levers on readability — too tight and paragraphs feel cramped, too loose and they lose cohesion. This previewer applies line-height values to real paragraph text so you can judge the spacing directly.
Because ideal leading depends on font size and measure, comparing values against actual copy beats picking a number blind. Adjust until the paragraph breathes without falling apart, then copy the line-height value into your type styles.
Copy-ready CSS
The CSS is generated live in your browser as you adjust the controls, so there is nothing to install and nothing is uploaded. Copy the ready-to-use declaration straight into your stylesheet, tweak the values to taste, and it will render exactly as it does in the preview here.
Frequently Asked Questions
What does the css line height previewer do?
It generates CSS from the options you choose and previews the result directly in your browser.
Can I use the CSS in production?
Yes. Copy the generated CSS as a starting point, then review naming, browser support, and design-system fit before shipping.
Does this upload my design values?
No. The generator runs locally in your browser and does not send your input to a server.
Is this free?
Yes. It is a free browser utility with no account required.
Practical utilities for front-end design and implementation work.