London, Dec 26 : The European Union''s digital library, Europeana, which crashed on its opening day, is back in operation.

European Commission spokesman Martin Selmayr said the website was working after its server capacity had been quadrupled and it had been stress-tested to deal with user interest.

However, a message on the site www. europeana. eu reads, "the user experience may not be optimal in this test phase" and as a result "the number of users will be limited in peak times."

The site was launched on November 21 to great fanfare but was swamped by an unexpected 10 million user hits per hour, swiftly bringing the system to a crashing halt, reports the BBC.

The Europeana project allows users to access films, paintings, photographs, sound recordings, maps, manuscripts, newspapers, and documents as well as books kept in European libraries.

Users will be able to find major literary works like Dante''s "Divine Comedy", or masterpieces such as Vermeer''s "Girl with a Pearl Earring" or the manuscripts of composers including Beethoven. (ANI)