PDF files can be quite busy if their content is quite wide, and especially if it includes images. For this reason many users are looking for a way to compress PDF, as they may have problems with the size to send their files through services such as Gmail.
Many services limit the storage or sending size of our files and that is why, so many users look for ways to reduce this weight without losing the highest possible quality, in the event that they contain images.
And this can be easily achieved with the programs shown below.
Programs to compress PDF in Windows
This list does not keep any order, all those mentioned below contain characteristics that differ from the others, and it is the user who decides which one to use.
Jsoft PDF Reducer
This tool is easy to use and also complete, since it not only allows us to compress and reduce the size of our PDF files, but also allows us to combine several files into one.
Although it allows us to join them, in the case of wanting to separate a PDF document into two, it also gives us that function, or that of deleting pages and selecting the one we like or want to have. And while these functions are not available to any viewer, or PDF editor, it includes more options such as adding watermarks, rotating pages or even reorganizing them among many other options.
This program is available in two languages (English and French). We can download it in the link shown below the image.

PDF Reduce: Download here
ORPALIS PDF Reduce
This PDF reducer is quite advanced, since it incorporates an automatic color detection and performs a design analysis. This is intended to reduce the design considerably and without significant quality losses.
Resample the images to reduce their quality, so that they continue to look just as good. This is because many images that we introduce, incorporate too much unnecessary quality, and that is why it is reduced to a point which still has quality.
The procedure is performed quickly, but this includes the use of higher CPU usage, reducing performance momentarily while the process is running.
This program is not free, but we can access its trial version in the link shown below.

ORPALIS PDF Reducer: Download here
PDF Compressor
It’s compressor has a fairly simple design, but with an attractive and visible interface. It allows us to compress our PDF in batches, that is, several PDFs at once.
They promise a fast compression and without loss of quality or format, which fulfills perfectly since it gives us the option to adjust these parameters in your program. We can get the free version or the paid version, both perfectly fulfill their function without any apparent problem.

PDF Compressor: Download here
NeuxpowerLite Desktop
Program that incorporates the compression function, which is quite powerful and allows us to compress our files up to 95% from their original state. Its interface is also quite simple, but at the same time complete.
It allows us to add both files and folders, and also some interesting options such as creating copies for added security, and choosing whether these will also be optimized.
Something curious, is that its installer allows us to choose if we want to use the full version or lighter versions, in order to occupy the least possible space on our hard drive.

NeuxpowerLite Desktop: Download here
Nice PDF Compressor
This compressor has a peculiar interface and, once installed and started, it shows us the same interface as an installer.
Its functions are simple, that of converting a file, or converting a complete folder. This uses the “Flate or RunLenght” algorithm to understand our files, in addition to allowing us to decompress them and return them to the original size.

Nice PDF Compressor: Download here
Free PDF Compressor
Another of the simplest PDF file compressors available on the list is this. The options we have available to compress our files are 5, which we see in the following image.
With the progress bar that appears at the bottom of the program, we can intuit the time that this process will take. The resource consumption of this program is minimal, so it can be used on almost any computer with poor performance.

This program is completely free, which we can download at the following link:
Free PDF Compressor: Download here