How to compare free PDF tools
Pick the job first: crop a page, edit a line, or turn photos into one PDF. A tool that wins at one of those can be a poor fit for the others.
Then check three facts. Does it require an account? Does the file leave your computer? Does the free limit cover the size of the file you have?
Run the same file through the tools you are considering and keep the one that leaves the layout intact. The comparison thread below is the place to add what you saw.