CAD-KAS PDF Editor

PDF Editor is a software that helps you view and edit content in PDF documents. The interface of the program contains an Explorer-based layout, so it is user-friendly from this point of view. However, the toolbar menu seems a bit cluttered.
Once you have opened a PDF file, you can use basic graphic editing tools, such as a brush, circle, ellipse, square, rectangle, table, arrow, lines, bucket fill, color picker, and others.
So, you can double-click the text to edit it, remove separation characters, replace and delete it, as well as change its font or position.
In addition, you can use a search function, copy text (optionally to another PDF file), bring it to the front or back, rotate, mirror, flip, skew or align it, and ungroup vector objects.
PDF Editor also allows you to insert annotations (e.g. note, free text, stamp), forms (e.g. form field, checkbox, radio button), pictures and vector text (with full unicode support).
Furthermore, you can add, extract or delete pages, insert page numbers, split the PDF document into equal files, remove duplicate pages, change the page size, create and organize bookmarks, edit document properties, assign a password, export the PDF as a RTF, TXT or image file, and more.
The program uses a moderate-to-high amount of system resources, includes a comprehensive help file and step-by-step tutorials, allows you to select your preferred language and didn't cause us any trouble during our tests.
There's also an "Undo" button available, but it can only take you a few steps back (and there isn't a "Redo" function).
Otherwise, PDF Editor is a very easy-to-use, powerful application for editing PDF files and saving them in various formats, and we strongly recommend it to all users.