Compress PDF Online


  • Step 1: Select the PDF you want to compress and upload it here
  • Step 2: Wait until the compression process has finished. It starts autmatically.
  • Step 3: Download the result. You will see how much the file size could be reduced.

Compress PDF

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Reduce the file size of PDFs

Our tool works for most PDFs and allows you to reduce their file size by a factor of up to 90%. The result depends of your input file. Files which already use a compression cannot compressed any further.

Ideal for Sharing PDF

The idea of this service is to provide you with an easy way to reduce the file size of your PDFs if want to share them only or email them to colleagues via email etc.

Free and reliable

We allow you to compress as may PDFs with your App. No sign up is required and there are no hidden costs.

Lossless vs. Lossy Compression

In general compression of files always comes along with some quality loss, although three are also lossless conversion algorithms which are less powerful than the first ones. Our converter applies lossy compression in order to achieve a maximum compression.

Cloud-Based Compression

Since our app is cloud-based you do not have to download or install any software on your personal computer. Everything happens online.

Privacy Policy

Your privacy is important us: We do not store your file longer than neccessary on our server. However, you have to be aware that you sumbit your files to a remote server.

Our PDF compressor will help you to reduce the filesize of most PDFs. However, in some cases the PDFs are already compressed which means that their size cannot be reduced any further. This is rather unlikely, however it may happen. If you still need to compress your PDF in such a case converting your file to the DjVu format is an interesting option. DjVu files are very similiar to PDFs. The main difference between the two formats is the better compression techniques by DjVu. Therefore, converting PDFs to DjVu will help you to reduce your PDFs size even if the possibility of standard PDF compression is already exhausted. In case you decide to go that way you can simply convert your PDF to DjVu here: https://pdf2djvu.com/

What our clients say:
Rated 4.9 / 5 based on 175 Reviews
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