Here are 4 free PDF compressor websites.
These websites are really helpful to shrink the size of your large PDF files to save the hard disk space. Without creating any zip archive, you can compress your PDF files. Most of these websites help to greatly reduce (more than 60 percent) your PDF files. However, do note that compression process also depends on the number of images available in your PDF files. If your file has multiple images or scanned text, compression level will be higher. Let’s have a look at these free PDF compressor websites.
PDFCompress! is one of the best website that lets you upload PDF from PC, Dropbox, and Google Drive to start the compression process. You can upload up to 200 MB size PDF file, which none of the other websites in this list support. As soon as PDF file is uploaded, compression process starts automatically. When the compression is done, it will also download output file to default location automatically (if you are using Google Chrome browser).
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Online PDF Compression Tool is another great website in this list which lets you upload a maximum 56 MB size PDF file for compression. All compressed and uploaded PDF files are removed automatically after 2 hours (maximum) from servers. Just two easy steps are needed and your PDF file is compressed automatically. You don’t have to configure any kind of compression settings and compression level is also quite good.
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CompressPDF by (smallpdf.com) supports drag n drop feature to upload your PDF file easily and it automatically starts the compression process. After compression, you will also see the original and output PDF file size, like visible in the screenshot above. After this, you can download the compressed PDF file to your PC in a single click.
This website also provides option to store the output PDF to your Google Drive or Dropbox account, which is not possible with any other website in this list. Your PDF is deleted after one hour automatically.
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Neevia Online PDFcompress is the last website in this list that provides high, low, maximum, and medium level compression options. Selecting any of these options will affect image quality according to the associated compression level. You can also select options to remove bookmarks from PDF, page levels, annotations, etc. to adjust the compression. Unfortunately, you can upload only 5 MB size PDF file. Still it is a good website to compress PDF file with different options.
After completing the compression process, it also shows how much your PDF file is compressed. This will give you an idea that were the applied settings good enough for compression or you should try other settings.
Here is the full review.
These all websites are pretty useful to highly compress your PDF files. However, if you have to compress large PDF files, then you should try the first two websites. CompressPDF (third website) is good when you need to upload your output PDF to your cloud storage services. Neevia Online PDFcompress lacks the feature to upload large files, but comes with multiple options for compression.