How to compress a PDF to reduce it's size?

Click in the file selection box at the top of the page and select the files to compress.

Change the compression parameters if you want. Start the compression with the corresponding button.

Finally, save the compressed files.

What does compressing a PDF do?

When reducing the file size of a PDF, various methods are used to make the file smaller. Depending on what data is contained in the PDF, the compression works well or less well. PDF files with e.g. images can be compressed well. PDF24 uses the following techniques to compress a PDF:

Removal of font information that's not required for displaying the PDF.

Reduction of the image size depending on the DPI parameter.

Reduction of the image quality depending on the image quality parameter.

PDF file changes and data compression of a structural nature.

How do I reduce the size of a PDF without losing quality?

Lossless PDF compression is possible with PDF24, but you can't expect a big reduction in file size in this mode. That's how it works:

Click in the file selection box at the top of the page and select the files to compress.

Change the compression mode to lossless compression and start compression with the corresponding button.

Finally, save the compressed files.

Why is my PDF so big?

A large PDF file can be created if the PDF file contains images. This is usually the main reason for a PDF that is too large. A PDF file that contains only text is usually much smaller. If a PDF contains images, you can use PDF24 to make them very small by reducing the size and quality of the images.

Does compressing a PDF reduce quality?

The PDF24 compression tool has several modes. In normal compression mode, the quality and size of the images are reduced, as this has the greatest effect on the file size. Lossless compression can also be used, but has less impact. However, a reduction in quality is often not a problem. The question is more or less how much the quality can be reduced, which is still acceptable in terms of file size.

Do PDFs compress well?

Yes, if the PDF contains images, because these images can be further compressed and the image size can be reduced. PDF compression for PDF files without images works less well.

How do I reduce the size of a PDF offline?

Simply download the free and easy to use PDF24 Creator and install it. This software is an offline PDF solution that includes a PDF compression tool that is easy to use.