Compress PDF to reduce file size

PDFs have become the standard for sharing documents for three basic reasons.
First of all because they are write protected so you are quite sure that a document sent by mail remains the same (even if there are ways to edit PDFs).
Second reason is the fact that the pdf is always the same whatever program is used to view it, so there is no danger that those who receive it can see it in a different way, with different pagination or formatting.
Third reason is that the pdf can be read without problems even on a smarthpone, on iPad and on an Ebook Reader.
For these reasons, every time you have to send a letter, a short paper, notes, work documents, curriculum and so on, you send a PDF and not the Word file or other text formats. Even when scanning notebooks, books or magazines, PDF is used to make a mirror copy of it.
A common problem with PDFs is that sometimes the file size can be quite as large as several hundred MB. A file larger than 10 MB also becomes difficult to send via Email and also to upload to online services such as Google Docs.
Let's see how you can reduce and resize the size of the PDF in terms of Megabyte by compressing the file and making it smaller, using free tools.
READ ALSO: Top 10 programs to edit PDF
  1. Irfanview : If you still don't have Irfanview installed on your computer, it means that it is the first time you have visited this blog. This is one of the best programs ever and is a free image viewer which, thanks to numerous plugins, also becomes useful for performing various otherwise difficult operations. With IrfanView you can view PDF files and save any file in a new compressed PDF. To do this, however, you need to install the Ghostscript plugin on your PC. From the File menu, go to Save As .. and then select the PDF format at the bottom, where Save as is written. When the PDF format is selected, Irfanview displays a box of options to decide how much to compress the file and the images included in it.
  2. Jsoft PDF Reducer is a free program for Windows PC that has the main function of compressing PDFs, but which also works to split documents, delete pages, rotate PDFs, add watermarks, protect PDFs and is also able to perform an operation on multiple files together.
  3. Free PDF Compressor, free, compresses large PDF files to make them easy to send via email and compatible even with low resolution screens. This is a very simple and easy to use program with a very clean interface.
  4. Reduce PDF Size allows you to compress multiple PDF files at a time, easily and automatically. It has an options menu in which to choose the degree of compression, to reduce the size of the file without losing quality.
  5. PDF24 Creator is a free program to create PDF, convert files to PDF and also compress files to have them smaller in size.
  6. SmallPDF: If, for example, you have a large PDF file that must be sent via e-mail to someone, to reduce the file size without any significant loss of quality, you can go to the SmallPDF website, without downloading programs and using the free web app. In one test the system managed to reduce my PDF file size from 7.9 MB to 3.9 MB, over 50%. There is nothing to install, just visit www.smallpdf.com and drag a file from the desktop onto the browser to convert it and then download the new version into a smaller and smaller file.
  7. Compress PDF on Mac with Preview: Mac users can use the integrated Preview app to compress PDF without having to download other programs. Open the file in Preview by selecting the file in the Finder and then, in Preview, go to File> Export, with the " Reduce file size " option from the "Quartz-Filter" drop-down menu, then press the "Save" button.
  8. iLovePDF is a website that allows you to upload a file from your PC, from Google Drive or Dropbox, and to use one of the three compression levels, from the minimum to the maximum. By using a 100MB PDF you can also halve the file size.
  9. PDF Creator is an open source program to create pdfs which has, among its creation options (at the Formats menu), the one to compress the file and reduce its size.
  10. PDFAID is a website, which allows you to compress PDF files online, quickly, without downloading anything.
  11. PDF Candy is not a program, but it is a web service that offers 24 different tools for working on PDFs, including the one for compressing files.
  12. Pdf2Go is another online tool for compressing PDF files, with optimization options and also with the possibility of converting everything to black and white to take up less space.
  13. SodaPDF is a site where you can compress PDF files automatically and quickly, without downloading any programs, directly from the browser.
  14. NicePDF is a free program to download on Windows PC that is used to compress PDF files in a very simple and effective way.

Other sites to compress PDF for free are:
  • HiPDF
  • Sejda.com
  • Docopub
  • WeCompress
  • PDFio

Also remember that, in the case of documents created with Word, on the Microsoft program there is the option to optimize all images by reducing their size significantly, without any loss of quality. After optimizing the images with the tool included in Word, the conversion to PDF will be lighter.
Also keep in mind that a large PDF can always be divided into two or more smaller parts with programs to cut and join, separate and unify pdf files

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