Rumors have been swirling for some time, but the search giant has formally unveiled Google eBooks.

According to a company blog post, users who access the eBookstore will be able to “browse and search through the largest ebooks collection in the world with more than three million titles including hundreds of thousands for sale.”

The store is accessible from any device, be it a tablet or a desktop, and users can buy books through Google or through any of its participating booksellers.

Fast Company reports this business model may save indie bookstores that have been excluded from Amazon and Barnes & Noble e-reader-only stores.

As one Portland, Oregon-based bookseller speaks out, Kindle and Nook are formidable technologies, but they’re islands. There are so many [devices and readers] outside those islands. What Google does is fill the oceans between them.

Photo by Google eBooks.