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PDF Compressor

File Optimization

Compress PDF
or click to browse - You can select multiple files
Max 100MB Secure Multiple files
Files to compress 0
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Original
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Compressed
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Saved
0 of 0 processed

How to Use

1

Upload your PDF

Upload your PDF document

2

Choose level

Select your desired compression level

3

Download PDF

Download your compressed PDF

Privacy note

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Privacy Note

Compression is processed on our secure servers. Files are automatically deleted after download unless saved to your account.

✓

Continue with Workflow

Select a workflow to continue

Workflow Current Step: 1

Free Online PDF Compressor

Reduce PDF file size by up to 90% without losing quality. Our PDF compression tool uses advanced algorithms to optimize images, fonts and document structure while maintaining perfect readability.

PDF Compressor Features

🎯

Smart Compression

Algorithms analyze content and apply the best compression technique for each PDF element.

⚡

Three Quality Levels

Choose between low compression (highest quality), medium (balanced), or high (maximum space savings).

👁️

Real-Time Preview

View the estimated size before compressing to make the best decision.

🔒

Secure Processing

Files are encrypted during transfer and auto-deleted after processing.

When to Use PDF Compressor?

  • Send documents by email that exceed the size limit
  • Upload files to platforms with size restrictions
  • Optimize PDFs for fast loading on websites
  • Reduce cloud storage space
  • Prepare documents for WhatsApp or messaging apps

Frequently Asked Questions

Does compression affect text quality?

No. Vector text remains intact. Only embedded images are optimized according to the chosen level.

How much can I reduce my PDF size?

It depends on the content. PDFs with many images can be reduced by up to 90%. Text-only documents have less compression potential.

Is it safe to compress confidential documents?

Yes. Files are encrypted during upload and processed on secure servers. They are automatically deleted after you download the result.

Can I compress multiple PDFs at once?

Currently we process one file at a time to ensure maximum quality. You can compress as many as you need sequentially.

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Free Online PDF Compressor

Reduce PDF file size by up to 90% without losing quality. Our PDF compression tool uses advanced algorithms to optimize images, fonts and document structure while maintaining perfect readability.

PDF Compressor Features

Smart Compression

Algorithms analyze content and apply the best compression technique for each PDF element.

Three Quality Levels

Choose between low compression (highest quality), medium (balanced), or high (maximum space savings).

Real-Time Preview

View the estimated size before compressing to make the best decision.

Secure Processing

Files are encrypted during transfer and auto-deleted after processing.

Batch-Friendly Workflow

Compress one file after another in quick succession. The interface resets instantly so you can process dozens of documents efficiently.

No Software Installation

Works entirely in your browser. No downloads, no plugins, and no Java or Flash required. Compatible with all modern devices.

When to Use PDF Compressor?

How Does PDF Compression Work?

Our PDF compressor uses intelligent algorithms that analyze every element within your document to apply optimal compression. Images are resampled and re-encoded using modern codecs like JPEG2000 and JBIG2, reducing their size dramatically while retaining visual clarity. Embedded fonts are subsetted so only the characters actually used in the document are kept, trimming unnecessary data. The internal PDF structure is cleaned and linearized, removing duplicate objects, orphan metadata, and unused resources. Depending on the compression level you choose, the tool adjusts the balance between quality and file size. Low compression preserves near-original fidelity, medium offers a strong balance suitable for most business documents, and high compression pushes savings to the maximum while maintaining readability. The entire process is automated and completes in seconds, even for large multi-page documents.

Your privacy is our priority. All uploaded files are processed in an isolated environment with enterprise-grade encryption. Documents are automatically purged from our servers within one hour of processing, and we never analyze, store, or share your content. Our infrastructure complies with GDPR and follows industry-standard security practices.

Pro Tip: Choose the Right Level

Start with Medium compression for most documents. If the result looks great, try High for even more savings. Reserve Low for print-quality PDFs where every pixel matters, such as photography portfolios or medical imaging reports.

Frequently Asked Questions

Does compression affect text quality?

No. Vector text remains intact. Only embedded images are optimized according to the chosen level.

How much can I reduce my PDF size?

It depends on the content. PDFs with many images can be reduced by up to 90%. Text-only documents have less compression potential.

Is it safe to compress confidential documents?

Yes. Files are encrypted during upload and processed on secure servers. They are automatically deleted after you download the result.

Can I compress multiple PDFs at once?

Currently we process one file at a time to ensure maximum quality. You can compress as many as you need sequentially.

Can I compress a PDF without losing quality?

Yes. Using the Low compression setting, the tool reduces file size by optimizing structure and fonts while keeping images at their original quality. Text is never affected regardless of compression level.

Is it safe to compress PDF files online?

Absolutely. Files are transferred over encrypted HTTPS connections, processed on isolated servers, and automatically deleted after you download the result. We never store, share, or access the content of your documents.

Why is my PDF so large in the first place?

Large PDFs usually contain high-resolution images, embedded full fonts, or redundant metadata from the software that created them. Scanned documents are especially heavy because each page is stored as a full-resolution image.

Can I compress a password-protected PDF?

If the PDF has an owner password that restricts editing but allows viewing, compression will work normally. If it requires a password to open, you will need to unlock it first using our Unlock PDF tool.

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