Free PDF Related Utilities

Free PDF Related Utilities

• Briss, an open-source application, is an excellent handyware for cropping/trimming PDF pages. It groups all the different page sizes in your document together and will require the user to make cropping decisions for each group of pages that is of a similar size. It provides the option to exclude certain pages or page ranges from the cropping action. It crops PDFs with simple GUI; it can crop different regions into separate pages, and multi column/pages. It's very handy.
• ORPALIS PDF Reducer Free is a freeware version of PDF compression Software to help get existing PDF files reduced up to 80% more than concurrent products.
• FileOptimizer is an another one for file size optimizer. It supports a lot of file types from audio/video (MP3, OGG, OGV), image (GIF, JPEG, PNG), and even office formats (DOCX, XLSX, ODT, PDF) and system files (DLL, EXE). By default, FileOptimizer will remove additional metadata, and other unneeded information, but will keep original files in your recycle bin. Notes: It might corrupt some of them especially EXE files.
• PdfSam is a free open source tool to split and merge pdf documents (it keeps bookmarks of original pdf files).
• PDFTK Builder and GUI for PDFTK are free graphical interfaces to the Windows version of pdftk making it much easier to use. pdftk is an electronic staple-remover, hole-punch, binder, secret-decoder-ring, and X-Ray-glasses. Pdftk is a simple tool for doing everyday things with PDF documents.
• Foxit Reader is the high volume PDF reader providing a complete PDF creation solution, providing the power of PDF creation to every desktop. Foxit Reader Version 6 has a lot of improvement. I use PDF-XChange as an portable Apps, but I am thinking to use Foxit Reader more.
• PDF-XChange Viewer presents users with an alternative to Adobe's Acrobat Reader. It gives users more options such as typewriter than its competition, allowing for more in-depth markups.
• STDU Viewer is a free viewer for multiple file formats including TIFF, PDF, DjVu, XPS, JBIG2, and WWF format. Starting from 1.6.86, STDU Viewer supports MOBI/AZW and FB2 formats and from 1.6.151, It supports EPub format. You can use STDV Viewer to print the files of these formats. STDV Viewer is getting better and better.
• SumatraPDF is a PDF, EPUB, MOBI, CHM, XPS, DjVu, CBZ and CBR reader for Windows. It's small and starts up fast.
• PDFill PDF Tools are FREE PDF functions to merge, split, reorder, delete, encrypt, decrypt, rotate, crop and reformat PDF (change margin size) pages,  to add information, header, footer and watermark, to convert images to PDF, PDF to images or PostScript to PDF, to delete, flatten and list form fields, to scan to pdf, to create transparent image, and more.
• K2pdfopt optimizes PDF/DJVU files for mobile e-readers (e.g. the Kindle) and smartphones. It works well on multi-column PDF/DJVU files and can re-flow text even on scanned PDF files. K2pdfopt is open source.