Compress PDF

Reduce PDF file size while maintaining quality

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Client-side compression works best for:

PDFs with large uncompressed images
Scanned documents with high-resolution images
PDFs created from Word/PowerPoint with embedded photos

Already optimized PDFs may not compress further.

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About PDF Compression

Reduce PDF file size for easier sharing via email or upload. Choose from three compression levels to balance file size and quality. Great for documents with images.

Benefits of PDF Compression

Reduce file size significantly
Three compression levels available
Faster uploads and downloads
Easier email attachments

Optimize your PDF files for faster sharing and reduced storage costs without losing clarity. Our Compress PDF tool uses intelligent algorithms to shrink file sizes by up to 90% while preserving text and image readability. Perfect for bypassing email attachment limits, speeding up web uploads, and keeping your digital archives organized. All processing is done locally in your browser, ensuring your confidential documents remain 100% private.

PDF compression is a technical optimization process that reduces the data footprint of a PDF file. It targets three main areas: image downsampling (reducing the resolution of high-DPI images to standard web-friendly levels), font subsetting (removing unused characters from embedded font files), and object stream compression (using Flate or LZW algorithms to compress text and vector data). This results in a much smaller file that looks identical to the original on most screens.

Email Attachment Limits

Gmail and Outlook often limit attachments to 20-25MB. Compress large PDF reports or portfolios to ensure they reach your recipient's inbox without bouncing.

Government & Employment Portals

Many official submission portals have strict file size limits (e.g., 2MB). Use our compression tool to shrink your CV, identity documents, or tax filings to meet these requirements.

Website Performance Optimization

If you host PDF brochures or manuals on your website, compressed files load significantly faster for mobile users and improve your site's SEO performance.

Our tool analyzes the internal structure of your PDF to identify 'bloat'—such as unoptimized metadata and duplicate objects. It then applies lossy or lossless compression techniques based on your chosen level. Because this happens via WebAssembly (WASM) in your browser, the processing power of your own computer is used, meaning your sensitive business or personal data is never uploaded to an external server.

Frequently Asked Questions

Will my PDF look blurry after I compress it?

Our 'Recommended Compression' level is designed to reduce file size while maintaining high visual quality. Images will still look sharp on standard monitors and mobile devices. Only the 'Extreme Compression' level might cause minor blurriness in high-res photos.

Can I compress a PDF that contains sensitive information?

Yes. Since our tool is 100% client-side, your file is never sent to the internet. It is safe for medical records, legal contracts, and financial statements.

Does compression affect the text searchability of my PDF?

No. Our compression logic targets images and metadata. The text layer and OCR data remain untouched, so your document remains fully searchable.