A 404 error page, which often serves to alert web/app visitors that the page they are trying to reach does not exist, is often regarded as one of the most possible elements to lose users/visitors with boring and dull logging-in/out/loading/leading pages in a web/app. However, that does not mean such error pages will be a nightmare in all cases.
Actually, a creative, cool, interesting, or informative 404 error page can not only lead customers to other parts of your websites/apps smoothly but also reduce customer frustration and let them stay on the site/app much longer.
Designer: Tajana Barac
Highlights：Color contrasts, color gradients, shapes and shadows
The color contrasts of classic blue and white, color gradients and shapes with shadows in this error page, all of them give people a sense of peace and serenity. This is really an excellent strategy to effectively reduce the negative emotions caused by a suddenly popped-out 404 error warning.
Designer: From limpfish.com
Highlights：Unique form to show the 404 error message
Unlike some frustrating error pages that merely display the error messages in a boring way, the designer of this 404 error page adopts a unique form, which is very similar to a wanted poster, to intuitively explain the errors and provide multiple options to link to other parts of this site. This is really creative and interesting.
Designer: Ash Rahal
Highlights：Overlap, emotional elements, and funny photos
The designer of this 404 error page uses overlapping of words, photos, and shadows to give a sense of space. Moreover, in order to relieve the negative emotions caused by 404 error pages, the designer also adds many emotional elements, such as its humorous explanation and the funny photo showing a depressing man, to gain users’ understanding and resonating.
Designer: Alana Brajdic
Highlights: Options and simplicity
As the designer of this error page writes: “404’s need to be meaningful. Tell the user what happened, why, and what they can do to resolve it”, the designer displays simple words and photos to explain the 404 error clearly and provide various options for them to jump to other parts of this site. This is also useful to offer site visitors a better user experience.
Designer: Andrea Hock
Highlights: A nice shot to combine the features of web/app
Except for adding related animations and high-quality photos to improve your error page designs, you can also easily combine the features of the targeted websites, apps, and promoting products. For example, this 404 error page is a nice shot to combine the features of its promoting products and is used as another good platform to show various pieces of jewelry. In this way, even when people are suddenly interrupted by this error message while browsing different pieces of jewelry, they can also go on previewing their preferable ones. And this is really a good way to reduce page bounce rate.
Designer: Anton Borzenkov
Highlights: Interesting oil painting style and thoughtful searching box
The designer of this page adopts a unique and interesting oil painting style to attract site visitors. Moreover, in order to create more pleasant and smoother user experiences, the designer also adds a searching box following the 404 error message so that every user can freely search and jump to their preferable links/pages as soon as possible once they encounter 404 error problems.
Designer: David Kovalev
Highlights: 3D technology
The designer of this page uses advanced 3D technology to show the 404 error, which is really interesting and intuitive.
Highlights: Use error page to tell a story
The designer of this error page uses shapes, colors, shadows, texts, and all other elements included to tell a story: “Your searched page cannot be founded on earth” or “The page has taken you to another planet”. This is really impressive and interesting.
Designer: From cssninjas.com
Except for giving a general explanation of the 404 pages not found error, the designer of this error page adopts a design technique called “Progressive Disclosure” to extend the page functions. People can easily click the linked words/phrases to switch to other pages easily.
10. UI 404 Page
Designer: Mario Sestak
Highlights：Strong visual effects and a perfect echo of its images and contents
The black background photos with strong visual effects can not only highlight the white texts of the 404 error page but also attract the attention of site/app visitors quickly once they have entered this page.
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