COMPRESS PDF has a tool to compress PDF files in the cloud. Portable Document Formats (or PDFs) are designed to carry information, and the possibility of reducing their size makes the job that much easier.

FormatPDF » Compress PDF
Uploading file...
It may take a while, don't close the browser :)
or drag and drop the PDF hereWrong file type. Please, try again.
file exceeds size warningThe file is too large!

Reduce The Size By Compressing Your PDF File

The PDF format is compatible with a huge number of operating systems and software. It is ideal to be sent or transported, since it can be delivered through many different electronic devices, and is easily attached to emails. This is why having a compressor tool is ideal.

When you reduce the size of a PDF, it will shrink and occupy less space so you can easily attach or copy wherever you need. With FormatPDF, not only will you be able to compress PDF size, but also edit, convert and even split a file.

Please, write your name
Firstly you need to accept the terms and conditions of the newsletter

Compressing A PDF Has Never Been Easier

Would you like to know how to compress a PDF on our page? All you need to do is select the tool, choose the file and reduce the PDF file size. As you see, it is an easy process, just like uploading a document and clicking a button. Next, you will download the compressed PDF for free.

PDF Size Reducer All Online

Forget about downloading an app to compress PDFs. With you can complete the process solely online. Why would you download a PDF compressor when you can do it online? Think of all the tools we offer you and how much space they would take if you had to install them onto your device.


Compressing a PDF file with our tool is 100% secure throughout the whole process. Working online, without having to download an app, significantly reduces the risk of your device being infected. Also, our site is fully protected, ensuring privacy at all times. With our PDF compressor, you will get optimum results, always.

Forget Advertisements

Advertisements may be necessary for some, but most of the time they are a nuisance. Imagine having access to state-of-the-art PDF editing tools without ads randomly popping up. Your wish is our command, and with it’s possible: compress PDFs without losing quality and with no interruptions.

Compress PDF Files On All Your Devices

If what you’ve read till now is not enough, imagine compressing PDF files on any device you own. Our tool can reduce PDF size online, on your cell phone, and a tablet. You can reduce PDF file size wherever you are, with the same results you would get on your home computer.

No Limit On PDF Files Compressed

1,2,3 … Compress all your PDFs! Normally, if you need to resize PDFs, it's because you have many files to transport and they don’t all fit in your external memory device. Or maybe you just want to send a PDF as an email attachment and need the file to be as small as possible. So let's go ahead!

Step By Step: How To Compress A PDF

To compress a PDF with our tool, follow these steps:

  1. On the top of this page, you will find a button with the text “Select PDF file”. Clicking on this button will allow you to upload the PDF document you wish to compress. Also, this button is surrounded by a dashed line area, into which you can drag and drop the PDF file as indicated.
  2. Now is the time to put the compression tool to work. Once the file has been uploaded, you will be offered three options visible to the right of the page (bear in mind that the stronger is the compression, the worst will be the quality of the file):
    1. Maximum compression.
    2. Recommended compression.
    3. Low compression.
  3. Choose one of these options, it will be highlighted in green, then you will proceed to click the red button (you will recognize it because it will read “Compress PDF”).
  4. Lastly, click on “Download PDF” to retrieve your resized PDF.

Once This Steps Are Completed You Might:

Once your file is compressed, you want to split it to send separately. Our PDF split tool can help:

Alternatives For PDF Compressing

Do you have a paid Adobe Acrobat Reader subscription? If so, you will be able to use the Adobe software compressor to reduce the size of your PDF in Windows 10, Windows 8, and previous Microsoft versions. To compress for Windows follow these steps:
  1. Open your PDF with Adobe Acrobat Reader DC.
  2. In the lateral menu found to the right of the screen, click on the option “Compress PDF”.
  3. Click on the “Compress Now” option of the emerging window.
To compress for Mac go to Preview, the PDF viewer incorporated by Apple years ago in all macOS devices. The steps to follow to reduce the size of your document are as easy as;
  1. Open your ODF with Mac’s Preview.
  2. Once the document is open, go to “File” and click on “Export
  3. In the emerging menu, look for the option “Quarts Filter”; click on it and choose the option “Reduce File Size” from the list.
  4. Lastly, click “save” and you will have your compressed PDF.
Unfortunately, Android does not offer an intrinsic PDF compressor. To compress for Android users must resort to external apps like Adobe Acrobat Reader, which, for a fee, offer a tool to reduce the size of a PDF. To compress with the Adobe app follow these steps:
  1. Open Adobe Acrobat Reader and click the “Files” menu on the lower part of your screen.
  2. Select the .pdf file you wish to compress and open it.
  3. Click on the three-dot icon on the upper right side of the screen.
  4. Unfold the lower menu and click on “Compress PDF” Now all you need to do is follow the app's instructions.
iPhone and iPad users also have options to compress PDF files. Apple offers integrated file compressing tools for its desktop computers and laptops, but not for its mobile devices. Visit the App Store, choose and install one of the options offered (search by “compress pdf” in the App Store) then navigate to the PDF file location, click on it, choose the option “Share” (the icon is an arrow pointing upward) and then choose the compression app you previously installed.

Frequently Asked Questions About Compressing A PDF

When you optimize your PDF, many people think you will get a lower-quality document. The truth is that compressions with and without loss do exist. For this second case, you will be able to reduce your PDF by looking for repeating patterns, thus compressing the PDF without losing quality.
No, the percentage reduction is not always the same. Depending on the PDF type, the percentage will be greater or lesser. As mentioned earlier, to compress a PDF the tool searches for repeating patterns, and thus the resulting decrease in PDF size will depend on pattern similarities within the document.
No, you don’t need to install anything. The final compression is a PDF file so you will be able to open the file without having to decompress it. The compression only eliminates the unnecessary parts within the PDF to obtain the most practical result possible, for optimal transport and delivery. As you can see, it’s all advantages when compressing a PDF online.
Once a PDF file is compressed and downloaded, the original document is erased from our servers. If you have doubts and need reassurance please visit our Privacy Policy Terms and Conditions page. You may exercise your rights at any time.
Yes, you can compress a PDF a second time. Nevertheless, you will not obtain a greater file reduction, because the first time around the PDF was compressed to its maximum capacity without losing quality. If you are not concerned about quality, you can use other apps that reduce the size of a PDF by approximation (note this process is irreversible).
Yes, you can compress several PDFs at the same time. Online tools allow the upload of several PDF files at the same time, and once compression is final it is the user who decides if he wants to download them separately (or in a ZIP file).
Rate this tool
2.8/5 - 4 votes