Errors 

Reduce PDF file online. How to compress a PDF file (working methods). Using Google Drive storage and Adobe Acrobat

How to compress a PDF file to reduce its size?

  1. You can change the compression settings if you wish. Start compressing the file by clicking on the appropriate button.
  2. Save the compressed files.

How is a PDF file compressed?

When reducing the size of a PDF file, use different methods. How effectively a file is compressed depends on what data the PDF file contains. For example, PDF files with images compress well. PDF24 uses the following PDF compression methods:

  1. Removing font information that is not needed when displaying a PDF file.
  2. Reduces the image size depending on the specified DPI setting.
  3. Reduces image quality depending on the specified quality parameters.
  4. Modify PDF file and compress structural data.

How to reduce PDF size without losing quality?

PDF24 allows you to compress files without loss, but in this mode the file size may decrease slightly. How it works:

  1. Click on the highlighted area at the top of the page and select the files to compress.
  2. Switch the lossless compression mode and start compressing the file by clicking on the corresponding button.
  3. Save the compressed files.

Why is my PDF so big?

If the PDF file contains images, the file size may be large. This is usually why large PDF files are created. A text-only PDF file weighs much less. If your PDF file has images, you can use PDF24 to create small images, reducing their size and quality.

Does PDF compression degrade quality?

The PDF24 compression tool has several modes. Normal compression mode reduces the size and quality of the image as it has a greater impact on the file size. You can enable lossless compression mode, but this will have a minor effect on the size. Often deterioration in quality is not a problem. The only question is how acceptable the quality is in relation to the size.

Do PDF files compress well?

Yes, if the PDF contains images. They can be individually compressed and reduced in size. Compressing PDF files without images is not as effective.

How to reduce the size of a PDF file without an Internet connection?

Download the free and easy-to-use PDF24 Creator and install it. The program works offline and includes a PDF compression tool that is easy to use.

Are PDF files compressed?

PDF files typically use internal compression tools for the objects they contain. However, such compression is not necessary. Some objects may not be compressed. The PDF creation program determines which objects will be compressed and which will not, but the PDF standard itself does not imply compression.

Is it safe to use PDF24 tools?

PDF24 takes file and data security seriously. We want users to be able to trust us. Therefore, we are constantly working on security issues.

  1. All file transfers are encrypted.
  2. All files are deleted automatically from the processing server within an hour after processing.
  3. We do not store files or evaluate them. Files are used only for their intended purpose.
  4. PDF24 belongs to German company Geek Software GmbH. All processing servers are located in data centers in the EU.

The question of reducing the file size in pdf format is often raised by active computer users. This is due to the large weight of the scanned images. Because of this, the document takes up hundreds of megabytes on disk. Let's look at the problem in more detail.

Using Adobe Reader

You can reduce the document size using free version programs Adobe Acrobat Reader. The compression function is only available at checkout paid subscription. The utility is installed without any problems, so let’s get straight to work.

From the initial menu, go to the “File” tab. Click on “Open” and select the document. IN in this example We will use a textbook weighing 69.9 MB. It consists entirely of scanned pages printed edition. You can also open a document by clicking on it in file manager. Go to the menu shown in the screenshot.


Leave the default values ​​in the called window. Select a location to save the compressed pdf. The example file now weighs 33.3 MB. The compression was carried out for about two minutes. The quality of the images has deteriorated. This may not be noticeable on a website or computer. However, after printing, the illustrations will be fuzzy or completely blurry. Disadvantage of this method: no flexible settings for the advanced user.

If installation is required additional parameters, then the optimizer will help. Open the document we need. Click on the button shown in the illustration below.


There are few settings, but they look difficult to master. Let's define the main ones. They are located in the left menu “Images”. Downsampling determines the resolution of images. To the right of the parameter you can set ppi (pixels per inch). Highly not recommended for printing. It is recommended when placing illustrations on the site. Below you can set the compression type. ZIP is used for simple images with a predominance of one color. JPEG - for any images. Its improved version is JPEG2000.


After setting, select a location to save the file. Let's compare the quality of the optimized document and the original. Left - original file, on the right - compressed.


Changes in quality are invisible even when the image is enlarged three times.

Using third party software

For the role free analogue PDF Compressor will do.


The intuitive interface and light weight of the program will appeal to any user. In the upper left part of the window, you must click the “Add Files” button to open the document. You can also drag the file directly into the program's work area.

To optimize, click “Start Compression”. The button is located at the top center. First you need to set the compression parameters by clicking the “Compression Settings” button.


After opening the settings menu, you will be notified about purchasing a license. She is needed for fine tuning compression. Click “Continue” and check the boxes in the “Compression” and “Optimization” tabs. Close the window and click “Start Compression”.

During the compression process, the weight of the example textbook decreased from 69.9 MB to 56.9 MB. Let's compare the quality. On the left is the document before optimization, on the right is after.


The result is worse than Adobe Acrobat Reader. There is now noticeable distortion in the compressed file. The advantage of the program is that you can compress the file absolutely free. As a result - worse quality and larger size. The utility logo is also added to the first page.

Using WinRAR

WinRAR - free program with the option to purchase a license. Created to place files in an archive and then compress them. The quality does not change. The original can be retrieved from the archive at any time.

IN work area utilities shown file system your computer. Select the folder to create the archive. Click on “Add”. The button is in the upper left corner. Here is the archive settings menu.


We are interested in the “Compression method” drop-down list in the “General” tab.


Their names speak for themselves. High-speed, less time-consuming, also has a low compression ratio. Maximum has the opposite characteristics.

Documents are added from the “Files” tab.


The file from the example was compressed in a few seconds. The file weight has changed from 69.9 MB to 68.3 MB. Conclusion: WinRAR does not work well with pdf files. The advantage of the program is that the original is preserved unchanged.

Using the online service ILovePdf

A convenient solution is web services for working with pdf files. ILovePdf can not only edit the contents of a file, but also reduce its size.


We start by clicking the big red “Select PDF files” button. An explorer will open where we specify the path to the pdf document.


After selecting it below, the compression settings will appear. They don't need any comments. Let's leave the recommended parameters. At the very bottom there is a “Compress PDF” button. Let's click on it.

After the compression process we get to new page and press the big red button again.


In the screenshot above we were also informed about changes in document weight. Instead of 69.9 MB, the textbook now weighs 55.9 MB. The result is similar to the result PDF applications Compressor. The difference is that you don’t need to download or install anything. Let's compare the quality. On the left is the optimized document, on the right is the original.


A slight loss of quality is noticeable; it does not affect the perception of information.

Using the SmallPdf online service

This service allows you to download files from Google Drive or DropBox. From a computer, documents are sent through Explorer or by dragging a file into a browser window.


Click on the big red button. To reduce the file size in pdf format, you don't need to click anything. It happens immediately after loading. Then download the document by clicking on the “Download file” button.


From the service, the document can be sent to Google Drive or DropBox (adjacent buttons). The illustration shows the volume of the compressed document. The file size has changed from 69.9 MB to 59.2 MB. Slightly more than the previous service. Let's check the quality. On the left is the compressed pdf, on the right is the original.


SmallPdf was able to compress the file with virtually no loss of quality. The downside of the service is the lack of compression settings.

To conclude, archivers do not work well with PDF document mi, and the best compression method is online service s and a standard Adobe tool.

If you need to forward a document, PDF– an ideal format compatible with Windows, Mac and Linux operating systems. PDF files are not only versatile, but also highly secure, allowing you to assign passwords for especially important documents. However, PDF files can often be bulky, making them difficult to send. Luckily, there are tools to reduce the size of these files.

Reduce PDF file size

One of the simplest and effective ways is to use Adobe Acrobat Reader. Open the program, then open PDF file , which you want to make smaller. Select Document(Document) > Reduce file size(Reduce File Size).

PDF Compression Software

It is also worth paying attention to such popular file compression programs as WinZip, WinRAR or 7ZIP. In most cases, they can help you create lighter versions of PDF files.

Reduce PDF File Size on Mac

Users Mac can compress PDF files using the features available in the application View (Preview).

Open the file PDF by using Preview and go to menu File(File) > Export(Export).

Select filter Quartz and then select Reduce file size(Reduce file size). Click Save(Save) to finish compressing the file.

Compress PDF file online

You can also find many free tools on the Internet that can compress your PDF files.

Smallpdf

Smallpdf, a free PDF editing site, helps you easily reduce the size of your PDF files online. The site includes an automatic compression feature, which makes the process very fast. Then you can download the new compressed file.

The file compression process itself consists of two stages. Go to Smallpdf and drag your file into the box using your mouse or click Choose file(Select File) to find and download the PDF file from your computer:


Wait for the automatic compression process to begin, then download the finished file for yourself.

PDF Creator

PDF Creator is a program with several interesting features, which can help you create PDF files easily. During installation PDF Creator creates virtual printer, which allows you to save documents (Word, Excel, etc.) in the format PDF.

After installation installation PDF Creator, open the file with Acrobat Reader. Click Seal(Print) and select PDF Creator virtual printer(PDF Creator virtual printer).

Then open Properties(Properties) > Paper/Quality(Paper/Quality) and press Additionally(Advanced).

Select Print quality(Print quality) and reduce DPI(permission) of the file. After starting the print job, a new lighter version will be created PDF file.

Image: © Artem Samokhvalov - Shutterstock.com

Once a PDF document is created, it usually has a very big size To optimize it, you need to know how to reduce the size of a PDF file.

PDF– a very popular document format among users. Universal program to view of this format on all types of OS – adobe reader.

Advantages of the format:

  • The quality of file display is superior to compression types such as JPEG and GIF;
  • Standardization - documents with this format can be opened on all devices, while appearance the document will not change;
  • Ensuring security - when transferring PDF files online, you can always be sure that no one will gain access to edit the file. It is also difficult to embed a malicious virus script into such files;
  • Support large quantity compression algorithms;
  • Automatic detection of document authenticity.

Adobe Acrobat Pro for compression. Using Standard Features

One of the most popular programs for working with files PDF format- This is Adobe Acrobat Pro. With its help, you can edit a previously created document and reduce its final size.

The application is paid, however, users can download a free one trial version for 30 days or portable version with reduced editing functionality.

The program allows you to significantly reduce the size of the final file.

Follow the instructions:

  • Open your document in Adobe Acrobat;
  • On the main panel, enable the File tab;
  • Find and select “Save as another document...” and then “Reduced file size”, as shown in the figure below;

  • Next, a window will appear in which you will need to specify the necessary parameters and the level of protection of the document being created;
  • After converting the file, click again on the “Open” – “Optimized file” tab and in the pop-up list, click on the “Save as another...” item;
  • Select a location on your hard drive where you want to save the document at a reduced size and click OK. This program allows compression without loss of quality.

In Adobe Acrobat, you can not only optimize a file, but also forcefully reduce its size.

To do this, follow the instructions:

  • Open the document in the program;
  • Now enable the File tab on the main toolbar of the utility;
  • Select “Save as another” and in the new list that appears, click on “Reduce size”, as shown in the figure below;

This method is perfect if, after optimization, the size has not decreased to the level you need.

  • In the new window, select the version of the program with which the final file will be compatible;

  • Click OK to apply the options to only one file or Apply To Multiple to save the settings for several PDFs at once.

You can compress a file using the built-in functions of the operating system. Windows systems. If the document does not open or takes too long to open, emergency compression is necessary. To do this, you need to open the properties of the PDF file.

Then in general settings Find the “Others” button and in the window that opens, check the box next to the “Compress contents...” item marked in the figure below. Save your changes by pressing OK.

This compression method is the simplest, so after compressing files whose size is several GB, the overall image of the content may be slightly distorted.

After compression, open the document in Adobe Reader to check its quality.

If it is invalid, return the original properties and optimize the file using third-party utilities.

If you only need to reduce the file size by certain time, use utilities for archiving data.

For example, 7Zip or WinRAR. In the future, if necessary, you can quickly unpack the archive and get a PDF with the initial size.

Cute PDF utility

Let's take a look at the Cute PDF program. It is one of the most common applications for converting to PDF and optimizing the final documents.

The utility is free to download and offers a wide range of features. Direct link to download the file: http://www.cutePDF.com/.

The program creates a virtual printer on the computer, through which the user interacts with the main functions.

To reduce the size the desired file using Cute PDF follow the instructions below:

  • Open the document in any reader for PDF format;
  • Now click on the “Print” button;

  • In the window that opens to configure print settings, indicate that the printer is named “Cute PDF”, find the “Properties” or “Properties” button and click on it. IN operating system In Windows, this key is located opposite the printer name;

Note! If the name Cute PDF is not in the drop-down list of available printers, the program may have been installed incorrectly or you did not restart your computer after installation.

  • In the window that appears, open the Compression tab, then select the desired quality level and degree of compression of the document. Save the settings and close the properties window;
  • Now in the printer settings window for printing, press the Print button;
  • Next, a window will appear to select where to save the document;
  • Wait until saving is completed and check the size of the final file. If necessary, you can perform all of the above steps on the compressed file to further reduce its size.

Using Google Drive storage and Adobe Acrobat

You can perform compression directly through your Google Drive. Adobe Acrobat must also be installed on your computer. Login to your account on disk and download required file PDF.

Then you need to open the PDF in your browser. To do this, select a document from the list of previously downloaded ones, right-click on it and click on “Open” or “Open”.

Now you need to send the contents of the PDF tab to the print queue. To do this, open the print settings window in your browser settings. Select Adobe PDF from the list of available devices. Next, click on the OK button.

Instead of the usual printing process, the process of saving the document to HDD computer. In this case, the program will automatically optimize it, which will reduce its size.

Remember! In order for the Adobe PDF item to be available in the print list, on your personal computer Adobe Acrobat must be installed. Otherwise, saving using this method will not be possible.

Compression using MS Word

Popular text Word processor from the package software MS Office will also help you reduce the size of the final PDF. Open the file using the Adobe Acrobat utility. Then save the document as MS Word (Figure below).

Now find the saved item and click on it right click mice. In the pop-up list, click on the “Convert to Adobe PDF” item, as shown in the figure below.

Wait for the process to complete. As a rule, it will not take more than two minutes. This way you can reduce the document size by approximately thirty percent without significant loss of quality.

The best online converters

Thanks to software with open source Many services have appeared on the Internet that replace some desktop programs.

To reduce the size of the document you need, you can use the following services:

  • Shrink PDF. Official link to the resource: http://shrinkPDF.com/ru/. This online converter allows you to reduce the size of up to 20 documents at a time without loss of quality.

To get started, click on the “Open” button and select documents on your computer for compression. Wait for the object to be loaded onto the service.

Now the file and the status of its compression process will appear at the bottom of the page. Wait for the process to complete and download the resulting file to your device. The figure below shows an example of using the service;

Also using of this service You can instantly compress JPEG and PNG files. To do this, switch to the appropriate service tab.

  • SmallPDF. Link to home page website: https://smallPDF.com/ru/compress-PDF. With this service you can optimize popular formats, including PDF.

To get started, drag a file from your desktop onto the red area open page in the browser. You can also open the file with cloud storage from Google or Dropbox.

Wait for your document to finish loading. The compression process will then begin automatically. As a rule, the service allows you to compress a file by 5% -20%. This is not much, but this method allows you to preserve the original quality of the document.

http://PDF-docs.ru/.

To perform compression, find small window on the right side of the page. Then upload your file and select the compression type. Press the Forward key and wait a few minutes for the process to finish. Next, the file will automatically start downloading to your computer.

Video materials:

Have you created a PDF document, but it is very large in size? Are there too many documents on the media and they take up a lot of memory? You need to send a message, but the document is too large and loading it takes a lot of time, or is not possible at all due to the size of the document?

Today this problem will be resolved, several solutions will be considered. Most of the methods mentioned below are only possible in the software shell - "Acrobat DC" from Adobe, which requires installation on a computer. This software is paid, but you can use a trial version for 30 days. But other options will also be considered, that is, without using the Acrobat DC software from Adobe.

1. How to reduce the size of a pdf file using online services

If you don’t want to download and install anything, there is a great opportunity to compress a PDF file online. Compressing documents online is convenient, reliable and fast. There are many services on the Internet that can help you reduce the memory footprint of a PDF file for free. Below are some of them:

1.1. SmallPDF - online service for compression.pdf

1. Open the desired file that you want to compress using Acrobat.

3. In the next “PDF Optimization” window, you need to select the “Estimate space usage” option in order to know which components of the document take up the most space in the document. The calculation is carried out in percentages and bytes. Taking into account the information on estimating the space occupied, and making a conclusion about what needs to be compressed and what is not worth it, you can proceed to directly compressing the file. To do this, in the upper left part of the window you need to select parameter items with the left mouse button, and in the upper right part you need to change the settings themselves. After all necessary settings the file should be saved.

The use and distribution of unlicensed software can create additional difficulties in the operation of your PC; beware of such programs and sites. Enjoy!