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Compress a PDF: Easy Steps to Reduce PDF Size

PDF Compressor

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Compress PDF

File:

Original Size:

Download Compressed PDF

Original Size:

Compressed Size:

Compression Ratio:

How to Compress a PDF

  1. Upload Your PDF
    Click the "Upload PDF" button to select the PDF file you want to compress. If you accidentally upload the wrong file, simply use the "Back" button to re-upload the correct one.
  2. Choose Compression Level
    After uploading, select your desired compression level with the level selector.
    Once you've selected the compression level, click the "Compress PDF" button to process your file.
    (The final size of the file may be different to the show value on the preview page)
  3. Download the Compressed PDF
    After the compression is complete, you’ll be redirected to a download page. Save your compressed PDF. If necessary, use the "Back" button to upload another file or make further changes.

What is the Use of Compressing a PDF?

  • Reduced File Size: Compression significantly reduces the file size, making PDFs easier to store, share, or email, especially when dealing with large documents.
  • Faster Uploads and Downloads: Smaller PDFs are quicker to upload or download, saving time and bandwidth.
  • Improved Efficiency: Ideal for professionals, students, and businesses who need to manage storage space or share files regularly.



Features

Adjustable Compression Level

Choose your preferred compression level using a simple slider. Balance between file size and quality to suit your needs.

Live File Size Preview

See the original and estimated compressed file sizes before downloading, so you know exactly what you’ll get.

Privacy-First Processing

All compression is performed locally in your browser. Your files are never uploaded or stored on any server, ensuring complete privacy and security.

Device and Browser Friendly

Compress PDFs on desktop, tablet, or smartphone. The tool works on all major browsers and operating systems.

Preserve Document Layout

Compression reduces file size by optimizing images, but your PDF’s layout and text remain unchanged and readable.

No Registration Required

Start compressing your PDF instantly—no sign-up or personal information needed. Just upload, adjust, and download.

Frequently Asked Questions

Find answers to specific questions about compressing your PDF files. For more help, see the support contact at the end.

  • How does the compression slider affect my PDF?
    The slider lets you choose the balance between file size and image quality. Lower values give smaller files but may reduce image clarity, while higher values keep more detail but result in larger files.
  • Will text and vector graphics lose quality?
    Text and vector graphics are preserved at their original quality. Only images within your PDF are compressed to reduce file size.
  • Can I compress scanned PDFs or image-based PDFs?
    Yes, scanned and image-based PDFs can be compressed. The tool optimizes embedded images to reduce file size.
  • Is there a maximum file size or page count?
    There is no strict limit, but very large PDFs or those with many pages may take longer to process depending on your device and browser.
  • Can I preview the compressed PDF before downloading?
    You will see the estimated compressed file size and compression ratio before downloading, but the actual PDF preview is not shown. Download the file to review the result.
  • Will bookmarks, annotations, or forms be preserved?
    Basic page content is preserved, but advanced features like bookmarks, annotations, or forms may not be retained in the output PDF.
  • Can I compress password-protected PDFs?
    No, password-protected or encrypted PDFs are not supported. Please remove any passwords before compressing.
  • Will the compressed PDF have a watermark?
    No, your compressed PDF will not have any watermarks or branding added by this tool.
  • Can I compress multiple PDFs at once?
    No, you can only compress one PDF at a time. To compress another, upload it after finishing the current one.
  • Will the file name change after compression?
    Yes, the downloaded file will be named with "compressed_" added to the original file name.
  • Is an internet connection required?
    You need an internet connection to load the tool and its libraries, but your files are never uploaded or sent to a server.
  • Does the tool work on mobile devices?
    Yes, you can compress PDFs on smartphones and tablets as well as desktop computers.
  • How can I get support or send feedback?
    For support or feedback, please use the email address or contact form provided on the Contact Us page.