‘404 Error’ pages are basically pages that either doesn’t exist or they are broken. Sometimes being in control of thousands of pages on a site is troublesome and errors can be inevitable. However you can create an excellent 404 page that could in fact help your user.
Even though it can act as an advantage people still tend to avoid altering their 404 pages. But what could be useful to include in a 404 error page?
Tips:
- Have a search engine so that people can search what they are looking for
- Have a link to the main page so that people can redirect
- Create contact forms so that people can inform you about the broken link/fill in their inquiries
https://www.orangecoat.com/lost
4. It’s always disappointing when you reach an 404 Error page. Therefore it is a good idea to prevent further frustration.
https://studiofables.com/404?fbclid=IwAR213GVHwe_Z8uTB841NB0b1inAtyidMJ0FkA1bMmvDjBUNuejlz49nCUc0 
5. Or you can have a really playful design such as
http://www.romainbrasier.fr/404.html
6. You can also have a funny design.
In conclusion, 404 error pages can be useful for your users if you care about making it into a helpful page.
