Once the document has been opened, we have the chance to search for any term, increase the size to view the images with more details, access any section or chapter with a single click, or print the information that interests us the most. The most used program to view PDF documents on the web browser and the desktop is Adobe Acrobat Reader, which has been developed by the same company that created the format a few years ago. The best program to read documents in PDF format PDF files have become a standard both for when it comes to publishing, as well as to share and print all sorts of documents, as they allow us to view and print the information contained in the file, but not to modify it.