HTML · Document structure

base

Sets a base URL for every relative link and resource in the document. Use it once, at most.

htmlRunnable example html course

Syntax

<base href="https://example.com/">

Example

Try it

<!doctype html>
<html lang="en">
  <head>
    <base href="https://developer.mozilla.org/">
    <title>Base URL</title>
  </head>
  <body><a href="/en-US/">Open the MDN home page</a></body>
</html>

Notes

base also changes where relative fragments resolve, which often surprises people. Prefer absolute URLs.

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base

Example

Notes

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