Cyrus Yip's blog

Create Top-Level 404 Page for a Multilingual Hugo Site

Cyrus Yip
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If you build a multilangual Hugo site, you may want to enable defaultContentLanguageInSubdir to make URLs look consistent. For example:

As of Hugo v0.120.4, defaultContentLanguageInSubdir = "true" still has the side effect that no 404 page (404.html) is generated at the root of public directory, which causes Cloudflare Pages to redirect non-exstent pages to root /. 404.html at the root is needed to fix the problem.

There are three workarounds: reuse 404.html in a subdirectory, create 404.md, and create custom 404.html in static directory. You don’t need these workarounds if you don’t enable defaultContentLanguageInSubdir.

Reuse 404.html #

Hugo generates 404.html in each subdirectory. Copy an 404.html to public directory after building. hugo && cp public/en/404.html public works for Cloudflare Pages, Netlify and Vercel.

Don’t copy generated 404.html to static directory. When 404.html changes, you need to delete 404.html, build the site and copy 404.html. It’s annoying to repeat these steps.

Create 404.md #

Create 404.md in a subdirectory, such as content/en/. Set url to /404.html.

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---
# content/en/404.md
date: 2023-11-06T00:00:00+08:00
title: "404 Page Not Found"
url: "/404.html"
comment: false
---

[English Site](/en/) | [Chinese Site](/zh-cn/)

Create custom 404.html #

Create 404.html in static directory. It’s copied to public directory during building.

A minimal example:

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<!DOCTYPE html>
<!-- static/404.html -->
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>404 Page Not Found - Cyrus Yip's Blog</title>
  </head>
  <body>
    <h1>404 Page Not Found</h1>
    <p><a href="/en/">English Site</a> | <a href="/zh-cn/">Chinese Site</a></p>
  </body>
</html>

A more complicated example:

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<!DOCTYPE html>
<!-- static/404.html -->
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>404 Page Not Found - Cyrus Yip's Blog</title>
    <style>
      body {
        display: flex;
        align-items: center;
        justify-content: center;
        flex-direction: column;
        height: 100vh;
        background-color: black;
        margin: 0;
      }
      .message {
        font-size: 2em;
        color: dimgray;
      }
      a {
        color: white;
      }
    </style>
  </head>
  <body>
    <p class="message">You are in darkness</p>
    <p class="link"><a href="/en/">Turn on the light</a></p>
    <p class="message">你掉入了虚空</p>
    <p class="link"><a href="/zh-cn/">离开</a></p>
  </body>
</html>
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