BayesFold is a web application that finds, ranks, and draws the likeliest structures for a user-provided multiple sequence alignment. Its foldings are based on the predictions of the Bayesian statistical method. BayesFold allows the user to view any sequence in the alignment threaded through any returned structure, and to automatically augment this display with information such as base coloration or mismatch flags. The results are publication-quality graphics that can be printed or saved directly from the user's web browser.