CSS Dynamic Viewport Units Comparer
Compare svh, lvh, and dvh viewport units for mobile hero and panel sizing.
What the CSS Dynamic Viewport Units Comparer does
Compare svh, lvh, and dvh viewport units for mobile hero and panel sizing. A mobile drawer can use 100dvh so it follows the visible browser chrome Adjust the controls and the preview updates immediately, so you can dial in exactly what you want and copy the result straight into your project — no build step and no account.
One thing to keep in mind: Viewport unit behavior depends on browser UI, orientation, and installed web app mode.
Private and in your browser
Everything runs locally in your browser. Your input is never uploaded, so the tool stays fast and works offline, and the copy and download buttons always use the current result shown in the output panel.
Frequently Asked Questions
What does the CSS Dynamic Viewport Units Comparer do?
Compare svh, lvh, and dvh viewport units for mobile hero and panel sizing. A mobile drawer can use 100dvh so it follows the visible browser chrome.
What should I keep in mind?
Viewport unit behavior depends on browser UI, orientation, and installed web app mode
Does it upload my input?
No. The CSS Dynamic Viewport Units Comparer runs entirely in your browser — your input is never uploaded, and it keeps working offline once the page has loaded.
Practical utilities for front-end design and implementation work.