PDF Compressor

Compress PDF files to under 1 MB while preserving quality. Free online tool with adjustable compression settings.

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6,076+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how PDF Compressor processes input data instantly inside your browser.

Sample Input Image dimensions: 4000 x 3000 pixels (File size: 5MB PNG)

Computed Result Output WebP Image: 1920 x 1440 pixels (File size: 350KB, 88% reduction)

Execution Mode Client-Side In-Browser JS

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About This Tool

This PDF compressor tool allows you to reduce the file size of your PDF documents to under 1 MB while maintaining acceptable quality. Upload your PDF file, adjust compression settings if needed, and download the optimized version. The tool uses advanced compression algorithms to shrink PDF files by optimizing images, removing metadata, and compressing text. Perfect for email attachments, web uploads, or storage optimization.

Save your calculation history with a free account

How to Use

Click the upload area or drag & drop your PDF file
Adjust compression level if needed (default is balanced)
Click 'Compress PDF' button
Wait for processing to complete
Download your compressed PDF file
View compression statistics including original vs new file size

Frequently Asked Questions

Find Quick Answers

How does this PDF compressor work?

The tool uses Ghostscript on the backend to optimize PDF files by compressing images, removing unnecessary metadata, and applying compression algorithms to reduce file size while maintaining readability.

Is there a file size limit?

The tool can handle PDF files up to 50 MB. For best results with the 1 MB target, we recommend starting with files under 10 MB.

Will my PDF quality be affected?

The compression is optimized to balance file size reduction with quality preservation. Higher compression levels may reduce image quality slightly, but text remains crisp and readable.

Are my files secure?

Yes, all uploaded files are processed securely and automatically deleted from our servers after 1 hour. We don't store or share your documents.

What if my PDF is already under 1 MB?

The tool will still optimize it further if possible, but will notify you if minimal compression was achieved.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

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