The invention provides a method for converting and displaying layout files. The method comprises the steps of format file generation, distributed loading, small endorsement pen point signing and watermark leakage prevention. Files such as doc/doc x, xls/xlsx, ppt/pptx, jpg. Tif, pdf, gif, png, cad and html are converted into unified electronic files, and when the files are loaded, readers of various files do not need to be installed, and the files are typeset in a unified mode through a format file reader; rendering and displaying the file in a directory manner, and reading and loading the file in a distributed manner; the experience effect and the reading speed of customers are improved. A page indicated by the file is marked by a red pen point, so that the file can be conveniently and quickly looked up; the files are all remotely called and are not locally cached. Meanwhile, the files cover watermark codes, so that the safety of the files is ensured. The files are leakproof and traceable. According to the patent, the reading and signing of files are more convenient, safer and more humanized, and the user experience is greatly improved.