404 Page Generator
Turn a dead end into a helpful page. The generator writes a complete, self-contained 404.html with inline CSS: a large “404”, a friendly heading and message, an optional search form, links to your most useful pages and a “Go back” link. It adds noindex and explains how to serve the page with a real 404 status in Apache and nginx, so search engines do not treat it as a soft 404.
- Runs in your browser
- No sign-up
- Free to use
How to use 404 Page Generator
- Enter your site name, heading and message.
- Add helpful links and the search URL.
- Choose theme and colour.
- Upload 404.html and configure your server.
404 Page Generator features
Complete page
One self-contained HTML file with inline CSS.
Search form
With your search URL and parameter.
Helpful links
Home, categories, contact.
Server setup
Apache and nginx examples.
Live preview
See the result in a sandboxed frame as you type.
Safe output
Your text is escaped; javascript: and data: links are rejected.
When to use 404 Page Generator
- Any website after a redesign or URL change.
- Shops with discontinued products.
- Static sites on shared hosting.
- Branded error pages for apps.
404 Page Generator FAQ
What is a soft 404?
A “not found” page that returns status 200. Google may treat it as an error or index it – always return 404 (or 410 for deleted pages).
Why inline CSS?
The 404 page can be shown at any URL depth; inline styles and root-relative links always work.
Should I redirect 404s to the home page?
No – redirect only pages that have a real replacement. Mass redirects to the home page count as soft 404s.
Keep visitors on your site
Most visitors who hit a 404 leave immediately. A search box and a few relevant links bring many of them back to useful content.
How it works: you fill in plain text fields and lists, and the generator writes clean, indented HTML and CSS in your browser. Everything you type is escaped before it is placed in the markup, links are checked so that javascript: and data: URLs cannot slip in, and the preview runs in a sandboxed frame without scripts. Nothing is uploaded or stored.
The code has no framework or build step: copy the HTML into a page, template or page-builder HTML block, and the CSS into your stylesheet. Class names use a prefix you choose (BEM style), so they do not clash with your theme, and colours come from your accent colour with automatic contrast checks.
Accessibility is built in: semantic landmarks and headings, real labels on form fields, visible focus outlines, enough colour contrast and layouts that reflow on small screens without horizontal scrolling. The notes under the output explain the decisions and what you still need to do on your side.