5 Best PDF Compressor Apps

Wed. 07 Feb. 20241103
Looking for the best PDF compressor apps? Check out our list of the top 5 PDF compressors that can help you reduce file size.
5 Best PDF Compressor Apps

Not all PDF compressor software are created equal. Several factors need to be considered when choosing the right solution. These include the software’s ease of use, its compression ratio, the quality of the compressed PDF, security features, the ability to handle batch compression, etc.

Each of these factors contributes to the overall functionality and suitability of the software for different users and their specific needs.


5 Best PDF Compressor Apps

How To Compress Files on Windows

How To Compress Files on Mac

PDF Compressor: Best Practices

PDF Compressor: FAQ


5 Best PDF Compressor Apps

Managing PDF files efficiently is more critical than ever, whether for academic, professional, or personal use. Compressing PDFs not only frees up valuable digital space but also makes sharing easier without compromising quality.

1. PDF Reader Pro

PDF Reader Pro

Image source: PDF Reader Pro

A versatile app that excels in more than just compressing PDFs. It offers a comprehensive suite of tools for reading, annotating, editing, and converting PDF files. Ideal for users looking for an all-in-one PDF solution, PDF Reader Pro provides high-quality compression without sacrificing document integrity, alongside features for enhancing productivity and document management.

Key Features

  • Versatile Compression: Offers adjustable compression settings to balance file size and quality according to user needs.
  • Batch Processing: Compress multiple files simultaneously, saving time and effort for users with bulk compression needs.
  • Cloud Integration: Seamlessly connects with cloud storage solutions, enabling easy saving and sharing of compressed PDFs.
  • Advanced PDF Editing: Beyond compression, it includes features for editing text, adding annotations, and even converting PDFs to other formats.

Why It Stands Out

PDF Reader Pro distinguishes itself with its broad range of features, making it more than just a compression tool. Its ability to handle multiple tasks within a single platform offers unparalleled convenience for users.

2. Smallpdf


Image source: SmallPDF

This user-friendly online tool simplifies the PDF compression process with its intuitive drag-and-drop interface. Smallpdf is designed for efficiency and security, allowing users to reduce file sizes significantly while ensuring data protection. It's perfect for quick, hassle-free compression tasks and offers additional PDF management tools online without the need for software installation.

Key Features

  • Drag-and-Drop: Simplifies the compression process with a user-friendly interface.
  • Security: Employs strong encryption to protect files during compression.
  • Direct Sharing: Compressed files can be shared directly via email or link, enhancing collaboration.
  • No Installation Required: Being an online tool, it doesn't require any software installation, making it accessible from any device with internet access.

Why It Stands Out

Its blend of simplicity, security, and accessibility makes Smallpdf a go-to option for users looking for a straightforward and secure PDF compression solution.

3. Adobe Acrobat Pro DC

Adobe Acrobat Pro

Image source: Adobe Acrobat Pro DC

From the creators of the PDF format, Adobe Acrobat Pro DC is a professional-grade tool offering advanced compression settings and a comprehensive array of editing features. It integrates seamlessly with Adobe's cloud services, making it a top choice for professionals seeking extensive PDF management capabilities and high-quality compression.

Key Features

  • Professional Compression: Provides detailed control over compression settings to meet the high standards of professional users.
  • Comprehensive Toolset: Includes robust editing, annotation, and conversion tools, catering to a wide range of PDF management needs.
  • Adobe Document Cloud Integration: Offers seamless access to files stored in Adobe's cloud, facilitating easy storage and sharing.
  • Enhanced Security: Features advanced security options, including password protection and encryption.

Why It Stands Out

For professionals and businesses that require reliable and advanced PDF management tools, Adobe Acrobat Pro DC stands unmatched, particularly for its compression capabilities and comprehensive feature set.

4. Nitro PDF Pro

Nitro PDF

Image source: Nitro PDF

Balancing powerful features with an easy-to-use interface, Nitro PDF Pro caters to both professionals and casual users. It offers efficient compression, cloud connectivity, and the ability to preview files before compression. Its comprehensive toolset for creating, converting, and editing PDFs makes it a versatile solution for comprehensive document management.

Key Features

  • Intuitive Design: Features an easy-to-use interface that makes navigating through compression and other PDF management tools a breeze.
  • Cloud Connectivity: Integrates with popular cloud services, allowing for easy sharing and storage of PDFs.
  • Preview Before Compression: Users can preview files to ensure the quality meets their standards before finalizing the compression.
  • Rich PDF Tools: In addition to compression, it provides tools for creating, converting, and editing PDFs, making it a versatile choice for comprehensive PDF management.

Why It Stands Out

Nitro PDF Pro's intuitive user interface, combined with a robust set of features, makes it an excellent choice for users who need a reliable yet straightforward PDF management solution.

5. iLovePDF


Image source: iLovePDF

A web-based tool that provides a wide range of PDF processing capabilities, including efficient compression. iLovePDF is known for its simplicity and accessibility, offering essential features for free. With tools for merging, splitting, and converting PDFs, it's a great option for users needing a convenient, no-cost PDF management solution.

Key Features

  • User-Friendly Platform: Offers a straightforward approach to PDF compression, suitable for users of all skill levels.
  • Multiple PDF Tools: Besides compression, it supports merging, splitting, and converting PDFs, providing a comprehensive online PDF solution.
  • Mobile App: With its mobile app, iLovePDF brings the convenience of PDF management to smartphones and tablets.
  • Accessibility: The free version includes essential features, making it accessible for casual or occasional users without a financial commitment.

Why It Stands Out

iLovePDF's combination of free features, ease of use, and mobile accessibility makes it an excellent option for users who need a flexible


How To Compress Files on Windows

Step 1: Open PDF Reader Pro:

Start by launching PDF Reader Pro on your Windows computer. If you haven't installed it yet, download it from the official website and follow the installation instructions.


Navigate, edit, and
convert PDFs like a Pro
with PDF Reader Pro


Easily customize PDFs: Edit text, images,
pages, and annotations with ease.


Advanced PDF conversion: Supports
multi-format document processing with OCR.


Seamless workflow on Mac,
Windows, iOS, and Android.

Don’t let PDFs slow your efficiency DOWNLOAD NOW

Step 2: Select the PDF File:

Click on 'Open File' and navigate to the PDF file you wish to compress. Select the file and click 'Open' to load it into PDF Reader Pro.

PDF Reader Pro open file


Step 3: Access Compression Tools:

Once your PDF is open, look for the 'Compress' option under the "Editor" button. 

PDF Reader Pro Compress files


Step 4: Choose Compression Level:

PDF Reader Pro typically offers several compression levels or options. Select the desired level of compression. Higher compression results in smaller file sizes but may reduce the quality of images and graphics.

PDF Reader Pro Compress


Step 5: Verify the File:

Open the compressed PDF in PDF Reader Pro to ensure it looks as expected. Check the quality of images and text to make sure they meet your needs.


How To Compress Files On Mac

Step 1: Open PDF Reader Pro on Mac

Begin by launching PDF Reader Pro on your Mac. If it's not already installed, download it from the Mac App Store or the official website and follow the installation prompts to get it set up on your Mac.


Navigate, edit, and
convert PDFs like a Pro
with PDF Reader Pro


Easily customize PDFs: Edit text, images,
pages, and annotations with ease.


Advanced PDF conversion: Supports
multi-format document processing with OCR.


Seamless workflow on Mac,
Windows, iOS, and Android.

Don’t let PDFs slow your efficiency DOWNLOAD NOW

Step 2: Select the PDF File

Click on 'File' in the top menu and select 'Open', or simply press ⌘ + O. Navigate to the PDF file you want to compress, select it, and then click 'Open' to import it into PDF Reader Pro.

PDF Reader Pro Mac

Step 3: Access Compression Tools

With your PDF file open in PDF Reader Pro, locate the 'Compress' option. On Mac, this might be found under the 'Tools' menu or represented by an icon in a toolbar. The exact location can vary, but it's typically associated with document editing functions.

 Compress files on mac

Step 4: Choose Compression Level

PDF Reader Pro provides various compression levels or options to choose from. Select a compression level that suits your requirements. Remember, opting for higher compression will reduce the file size more significantly, but it might also affect the quality of images and graphics within the PDF.

 PDF Reader Pro mac compress files

Step 5: Verify the File

After compressing the PDF, it's important to check the result. Re-open the compressed PDF file in PDF Reader Pro to review it. Examine the quality of images and text to ensure they are satisfactory and have not been overly compromised by the compression process.


PDF Compressor: Best Practices

When it comes to reducing the file size of PDF documents without sacrificing original quality, understanding and applying best practices in PDF compression can make a significant difference. Here are key considerations and strategies to optimize the compression process, incorporating the specified keywords for a comprehensive approach.

Compression Level

The compression level is crucial in balancing between reducing PDF file size and maintaining output quality. High levels of compression result in smaller files but may degrade quality, especially for images within the PDF. Select a compression quality that suits your need—basic compression for documents where readability remains paramount and strong compression for when space saving is a priority.

Understanding PDF File Size

The size of a PDF document is influenced by the content it holds, including text, images, and embedded fonts. Using PDF compression tools with advanced features allows for selective compression, such as image compression and removing unnecessary metadata, which can significantly reduce PDF size without impacting readability.

Choosing Compression Tools

Online PDF compressors and offline PDF compression software offer different advantages. Online versions are convenient and often come with a simple interface, making them accessible for quick compression tasks, like preparing email attachments or documents for upload to Google Drive. Offline tools, such as dedicated PDF compressor tools or PDF editors, provide more advanced features, including PDF conversion, applying digital signatures, and customizing levels of compression.

Compression Speed vs. Original Quality

Compression speed is an important factor for users working with multiple documents. While a fast compression speed saves time, especially when using PDF compression tools capable of processing batches of documents, it should not compromise the original quality of the PDFs. The level of compression should be chosen with a consideration for the document's use case—high-quality settings for professional prints and lower settings for web uploads.

Integration with Cloud Services

Many PDF tools now offer integration with cloud services like Google Drive, enabling users to directly save and share their compressed PDFs online. This feature, typically found in both the basic version and trial version of PDF compressor tools, enhances collaboration and accessibility, especially for teams relying on cloud storage for document management.

User Interface and Accessibility

A simple interface encourages more efficient workflow, allowing users to compress PDF documents quickly without extensive technical knowledge. Whether you're using an online version or an offline application, the intuitiveness of the interface can significantly affect your productivity and the ease of achieving desired compression levels.

Advanced Features for Professional Use

For professional or advanced users, PDF editors and compression software with advanced features—such as PDF conversion, editing capabilities, and support for digital signatures—are essential. These tools offer more than just basic compression, enabling comprehensive PDF management, including editing text, customizing compression quality, and securing documents.


PDF Compressor: FAQ

What are advanced tools in PDF compression?

Advanced tools in PDF compression include software or online services equipped with complex compression algorithms and compression modes designed to reduce file size while maintaining the quality of images and text.

These tools often come with additional features like batch compression feature, allowing users to compress multiple files simultaneously, and provide options for customizing the compression to suit specific needs or document qualities.

How does an online PDF tool differ from a desktop version?

An online PDF tool offers the convenience of compressing files without the need to download software, making it accessible from any device with internet access. However, they may come with limited features compared to desktop versions or offline versions, which often have more advanced tools and functionalities for comprehensive PDF document workflows.

Desktop applications, such as Neuxpower PDF Compressor, a popular PDF compressor, also allow for offline access, which can be a must-have PDF compressor feature for those dealing with bulky documents or without stable internet connections.

Why is the quality of images important in PDF compression?

The quality of images within a PDF is crucial because aggressive compression can significantly degrade image clarity and detail, affecting the overall readability and presentation of digital documents.

Compression algorithms are designed to reduce file size but preserving image quality is essential, especially for professional or print-ready documents. Advanced tools often provide compression options to balance file size reduction with minimal loss of image quality.

What features might be missing in tools with limited features?

Tools described as having limited features typically offer basic compression functionality without the depth of compression options found in more advanced software. This might include a lack of batch compression feature, limited control over compression algorithms, or absence of additional features like password protection, PDF compressor functionality for customizing document management platform integration, or PDF conversion capabilities.

Can batch compression feature save time?

Yes, the batch compression feature is a significant time-saver, allowing users to select multiple files for compression at once rather than processing each file individually. This feature is particularly useful in document management platform scenarios where time efficiency is critical in handling PDF document workflows.

What are compression algorithms and how do they affect PDFs?

Compression algorithms are mathematical formulas used by a file compression tool or compressor for PDF to reduce the file size of PDFs. These algorithms work by identifying and eliminating redundant data within the file.

Complex compression algorithms can more effectively reduce file sizes with minimal impact on document qualities, such as the quality of images and text sharpness.

Is there a recommended compressor for Windows?

For Windows users, a compressor for Windows like Neuxpower PDF Compressor is often recommended due to its compatibility, efficiency, and range of compression options.

It's considered a simple PDF compressor with the ability to perform advanced tasks, making it a popular PDF compressor choice. Additionally, most PDF compressor download options are available directly from the developers' websites, ensuring easy access to the software.

What additional features do PDF compressors offer?

Beyond reducing file sizes, many PDF compressors offer additional features such as merging PDFs, splitting documents, adding digital signatures, encrypting files, and even PDF conversion capabilities. These features enhance the overall utility of the online PDF compression tool or software, making them invaluable for comprehensive document management and improving PDF document workflows.

Get Started with PDF Reader Pro Today!