Ocean404

Turn 404 pages into a small seaside scene

Ocean404 is a Safari extension that turns missing pages into a small pixel-art seaside scene. Instead of ending at a plain error page, you can find yourself on a quiet shore where message bottles drift in from the sea.

Pick up bottles and read someone’s message

From time to time, a small bottle drifts across the shore. Tap the bottle to pick it up, and you may find a short anonymous message written by someone else. Sometimes the bottle may be empty, but that little bit of chance is part of the atmosphere.

Write a letter from the envelope on the shore

When an envelope appears on the sand, you can tap it to write your own message. Your letter is placed into a bottle and sent out to sea, where it may someday arrive on someone else’s 404 page. It is a small, anonymous way to leave a kind thought behind.

A seaside scene that changes with time

The background changes depending on the time of day. You may see a bright daytime ocean, a quiet night shore, or a sunset-colored sea, making each 404 encounter feel a little different.

Designed to be gentle and safe

Picking up bottles and sending letters are managed with separate cooldowns. Ocean404 also encourages users not to include personal information, URLs, or harmful content in their messages. If an inappropriate message appears, it can be reported for review.

Recommended for

• People who want to make 404 pages a little more enjoyable
• Users who enjoy playful Safari extensions
• Fans of pixel art and retro game-like scenes
• Anyone who likes small anonymous messages and unexpected encounters