offline

If Application Cache isn't available natively, there is no way to mimic it.

Verdict

Use with caution

Category

HTML features

Browser support

Can I Use

Works in

IE10+

Should you use offline in 2026?

Only supporting browser will be able to load a page while offline. Still, many apps can make use of local storage to enable offline interaction if the page is already open.

Polyfills and fallbacks

Progressive enhancement works well here: browsers without support degrade gracefully, so a dedicated polyfill is usually unnecessary.

Browser share on Can I Use Edit on GitHub