How much can I reduce PDF file size?

There is no fixed reduction. Image-heavy files may shrink more; text-only or already optimized PDFs may change little, and some outputs can be larger.

What compression levels are available?

High keeps more image detail, Medium balances size and detail, and Low targets a smaller output with more visible quality loss.

Is the compression lossy?

Yes, image content can be rescaled and JPEG-compressed. Check small text, diagrams, signatures, and scanned pages after downloading.

PDF Compressor

Try three image-compression levels, then compare file size and readability before sharing.

Click to Upload or Drag & Drop PDF

Select a PDF file to compress

• Max 16MB • Choose quality level • Server processed

Reduce File Size

Compress large PDFs significantly while preserving readability

Quality Control

Choose from three compression levels to balance size and quality

Temporary Processing

Server files are scheduled for deletion after 60 minutes

How to Compress PDF Files Online

1
Upload PDF: Click the upload zone or drag and drop your PDF file that you want to compress.
2
Choose Quality: Select your preferred compression level - High (best quality), Medium (balanced), or Low (smallest size).
3
Download: Click "Compress PDF" and download your optimized file with reduced size.

Why Compress PDF Files?

Large PDF files can be difficult to share via email, take up valuable storage space, and slow down uploads and downloads. Compression results depend on the document. Image-heavy PDFs may shrink, while text-only or already compressed PDFs may change very little or even become larger. A smaller file can help you:

• Share PDFs via email without hitting attachment limits
• Upload documents faster to websites and cloud storage
• Save disk space on your computer or mobile device
• Improve page loading speed for online documents
• Meet file size requirements for online submissions

Compression Quality Options:

High Quality (Less Compression)

Best for documents that will be printed or require maximum clarity. Moderate file size reduction.

Medium Quality (Balanced) - Recommended

Perfect balance between file size and quality. Suitable for most use cases including email and web sharing.

Low Quality (Maximum Compression)

Achieves the smallest file size. Good for documents where file size is more important than perfect clarity.

Key Features:

✓ Three Compression Levels: Choose the right balance for your needs
✓ Adjustable Tradeoff: Compare readability against output size
✓ Fast Processing: Compress PDFs in seconds
✓ No Watermarks: Clean, professional output
✓ No Account Required: Request limits and rate controls still apply
✓ Temporary Server Files: Uploads and outputs are scheduled for deletion after 60 minutes

Common Use Cases:

• Reducing large scanned documents before emailing
• Optimizing PDFs for website uploads
• Meeting file size limits for online forms
• Saving storage space in cloud services
• Preparing documents for mobile viewing

Perfect for students, professionals, businesses, and anyone who needs to reduce PDF file sizes quickly and easily. Best suited to image-heavy PDFs. Encrypted, damaged, signed, form-heavy, or unusually structured PDFs may fail or lose features; inspect the output before relying on it.

Frequently Asked Questions

How much smaller will my PDF become?

There is no fixed reduction. Image-heavy PDFs often have more room to shrink; text-only or already optimized PDFs may change little, and some outputs can be larger.

Does compression reduce quality?

It can. The tool changes image resolution and JPEG quality according to the selected level. Check small text, diagrams, signatures, and scanned pages after download.

How are files handled?

Files are processed on the server and temporary uploads/results are scheduled for deletion after 60 minutes. Do not upload sensitive or regulated documents.

More PDF Tools

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Frequently asked questions

How much can I reduce PDF file size?: There is no fixed reduction. Image-heavy files may shrink more; text-only or already optimized PDFs may change little, and some outputs can be larger.
What compression levels are available?: High keeps more image detail, Medium balances size and detail, and Low targets a smaller output with more visible quality loss.
Is the compression lossy?: Yes, image content can be rescaled and JPEG-compressed. Check small text, diagrams, signatures, and scanned pages after downloading.