PDF Compressor – Reduce PDF Size Online

Compress PDF files online and reduce PDF size without complicated software. Choose quality, resolution or target file size and download your optimized PDF for free.

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PDF Compressor

100% Local Browser Security
Privacy First: Compression happens entirely on your device using client-side rendering. Your documents never get uploaded to any external server.

Upload PDF to Compress

Select or drag and drop any PDF document to reduce its file size.

Click to browse or drag PDF here

Supports PDF documents up to 100MB

document.pdf

Original Size: 0 KB

Or Specify Target Size
Image Quality 65%
Resolution Scale 1.3x

Compression Estimate

Original Size
0 KB
Estimated Size
0 KB
Estimated Saving: 0%

Compressing Document...

Optimizing images and rebuilding document structure securely.

PDF Successfully Compressed!

document_compressed.pdf

Original
1.2 MB
Compressed
300 KB
Saved
75%
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How to Use PDF Compressor – Reduce PDF Size Online

  1. Upload your PDF: Click the upload area or drag and drop your PDF document into the tool.
  2. Check the original size: After uploading, the tool displays the original PDF file size and number of pages.
  3. Select compression method: Choose Light for higher quality, Balanced for a recommended balance, or Extreme for a smaller file size.
  4. Set a target size (optional): Enable Specify Target Size if you need the compressed PDF to meet a particular size requirement. Enter the target size in KB or MB.
  5. Adjust quality and resolution (optional): Use the Image Quality and Resolution Scale controls to customize the compression output.
  6. Check the estimate: Review the estimated output size and expected percentage of savings before starting compression.
  7. Compress the PDF: Click Compress PDF Now to start processing the document.
  8. Download your PDF: Once compression is complete, review the original and compressed file sizes and click Download Compressed PDF.

Tip: Use Balanced compression for a good combination of readable quality and reduced file size. Choose Extreme when the smallest possible file size is more important than image quality.

About PDF Compressor – Reduce PDF Size Online

PDF Compressor – Reduce PDF Size Online is a free online tool that helps you compress PDF documents and reduce their file size quickly. Upload your PDF, select a compression level or specify a target size, and create a smaller PDF that is easier to store, share and upload.

The tool provides multiple compression options including Light, Balanced and Extreme modes. You can also manually adjust image quality and resolution or specify a target file size in KB or MB.

Key Features of PDF Compressor

  • Compress PDF files online for free.
  • Reduce PDF file size quickly and easily.
  • Supports PDF files up to 100 MB.
  • Light compression for higher quality.
  • Balanced compression for a recommended combination of quality and size.
  • Extreme compression for a smaller output file.
  • Specify a custom target size in KB or MB.
  • Adjust image quality from low to high.
  • Adjust resolution scale according to your requirement.
  • See estimated compressed size and expected savings before compression.
  • Download the compressed PDF directly after processing.
  • Supports multi-page PDF documents.
  • PDF processing takes place locally in your browser.

Compression Modes

Light: Designed to preserve higher image quality while still reducing the PDF size.

Balanced: Provides a practical balance between PDF quality and file size and is the recommended option for most documents.

Extreme: Uses stronger compression settings when reducing the PDF size is the main priority.

Custom PDF Target Size

If you need your PDF below a specific file size, enable the target size option and enter the desired size in KB or MB. The tool automatically adjusts its compression settings based on the selected target.

Privacy-Friendly PDF Compression

PDF compression is performed directly on your device using client-side processing. Your document does not need to be uploaded to an external server, making the tool suitable for documents where local processing is preferred.

Frequently Asked Questions

Upload your PDF, select Light, Balanced or Extreme compression, and click Compress PDF Now. After processing, download the smaller PDF file.
The tool supports PDF files up to 100 MB in size.
Yes. Enable Specify Target Size and enter your desired file size in KB or MB. The tool automatically adjusts compression settings based on the target.
Can I compress a large PDF file online?
Yes. PDF files up to 100 MB can be processed with this tool.
Yes. You can manually adjust the Image Quality setting and Resolution Scale before compressing your PDF.
Yes. The tool performs PDF compression directly in your browser using client-side processing, so the document does not need to be uploaded to an external server.
Yes. Before compression, the tool provides an estimated output size and estimated percentage of savings. The final result also shows the original size, compressed size and actual savings.
Yes. The tool processes each page of the uploaded PDF and creates a new compressed PDF containing all processed pages.
Yes. Once compression is complete, click Download Compressed PDF to save the optimized PDF to your device.
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