Just released version 1.2 of my extension, allowing one to browse base64-encoded links almost as if they were plain text.

Usage: print into your omnibox keyword b64, followed by space and then paste your base64 string, you should have a suggestion “Go to your-url”, click on it (or press Down, Enter) and you should be taken to your destination, godspeed.

Extension can be installed in Chrome web store, source code is on GitHub.

Screencast