No file size limits, no ad watermarks – just a free, beautiful and simple online pdf compressor to reduce the size of your PDFs and maintain good quality.
Source : https://smallpdf.com/compress-pdf
PDFCreator converts every printable document to PDF and many other formats. Create professional PDFs with a few clicks and it’s free.With many Professional Features: merge documents, send emails and more.
Source : http://www.pdfforge.org/pdfcreator