Abstract: A method for optimizing a multi-language user interface layout across languages via reverse pseudo-translation using an integrated development environment is provided. The method may include selecting at least one user interface page from a group of user interface pages in a first language for pseudo-translation. The method may include selecting at least one target language from a group of target languages in which to pseudo-translate the at least one user interface page. The method may include specifying at least one layout requirement for formatting the selected user interface pages. The method may include performing pseudo-translation of the at least one user interface page. The method may include modifying, automatically, the at least one pseudo-translated user interface page through application of a merge algorithm according to the at least one specified layout requirement. The method may include implementing a reverse pseudo-translation of the at least one modified pseudo-translated user interface page.