A parallax scrolling effect, where a background image moves slower than the foreground content as the page scrolls, adds a sense of depth to a page without needing JavaScript, using just the `background-attachment: fixed` technique or a perspective-transform approach.
This tool generates a ready-to-use CSS snippet implementing the fixed-background parallax technique, with the intensity of the effect adjustable through a single speed factor.
This CSS-only approach is lightweight and doesn't require any JavaScript, though it has some known limitations — the `background-attachment: fixed` technique doesn't work reliably on iOS Safari, so test across your target browsers before relying on it for a production site.
Because everything runs locally in your browser, results appear instantly and nothing you type or upload is ever sent to a server.
Bookmark this page if you expect to use this tool regularly — it loads fast and behaves the same way every time, with no account needed.
This kind of task shows up constantly in everyday writing, coding, design, and admin work, which is exactly why a dedicated, focused tool saves so much back-and-forth.
A tool that does one job well, without a cluttered interface or unrelated features competing for attention, tends to be faster to use than a heavier all-in-one app.
If you find yourself needing this conversion or calculation often, keeping this page open in a tab is usually faster than digging through a bigger software suite's menus.
Frequently asked questions
Does this work on mobile browsers?
The fixed-background CSS technique has known compatibility issues on iOS Safari specifically; a JavaScript-based or transform-based parallax approach is more reliable across all mobile browsers.
Do I need JavaScript for this effect?
No, this generates a pure CSS solution using background-attachment, though more advanced parallax effects with multiple depth layers typically do require JavaScript for full cross-browser reliability.