"Free PDF compressor" that is NOT free. PDFSail is not trustworthy.
I searched Google for "Compress PDF for Free." PDFSail was the top result. The precise wording on the PDF Sail Google result is this: "Compress PDF online for Free | Reduce PDF File Size. Compress PDF files online for free without losing quality. Reduce your PDF file size in seconds with no signup required and easy-to-use tools." Well anyone who is familiar with using the English language to make a statement will see fairly clearly that it explicitly states that I can compress my PDFs for free. In their FAQ section at the bottom of the page on their website, it states: "Is PDFsail’s PDF Compressor Free to Use? Yes! Like all our tools, our online PDF compressor is completely free to use to reduce file size." Well, to my surprise, when I tried to download my PDF it then came up with a very expensive subscription option. I'm not sure what definition of free they are using, but this is certainly not what most people would understand free to mean. So, it only lets me download my PDF if I sign up to an extremely expensive service. So now we discover we can compress our files for free, but we can't download our files for free.