Compress PDF Online
Reduce PDF file size while maintaining quality. Free, fast, and private.
✅ PDF Compressed!
How to Compress a PDF Online
Reduce PDF file size for email, upload, or storage — entirely in your browser.
Upload Your PDF
Drag and drop your PDF file onto the upload area or click Browse to select it. Files of any size are accepted.
Choose Compression Level
Select from preset compression levels — from light (preserves most quality) to maximum (smallest file size) — based on your needs.
Compress the PDF
Click Compress. The tool optimizes embedded images and removes redundant data. All processing happens locally in your browser.
Download Compressed PDF
See the original size, compressed size, and exact savings percentage — then download the optimized PDF with one click.
Why Compress PDF Files?
Smaller PDFs load faster, upload quicker, and are easier to share.
Email Attachment Limits
Most email providers cap attachments at 10–25MB. Compress large PDFs to sail under these limits without splitting documents.
Faster Cloud Uploads
Document management platforms, government portals, and form uploads often enforce strict file size limits. Compression solves this instantly.
Save Storage Space
Archives of scanned documents can balloon to hundreds of GBs. Compressing PDFs keeps storage costs low without losing content.
100% Private
Your documents are processed entirely in your browser. Sensitive PDFs — contracts, invoices, medical records — never touch a server.
Frequently Asked Questions
Results vary by content. PDFs with many high-resolution photos can often be reduced by 50–80%. Text-only PDFs are already compact and may only shrink by 5–15%. Scanned document PDFs with embedded images typically see the biggest gains.
Text in PDFs is vector-based and is not affected by image compression. Only embedded raster images are re-sampled at lower resolutions. At moderate compression levels, text remains crisp and fully readable.
Yes — use our PDF Merger to combine files first, then compress the merged result. Or compress individual files before merging to keep the final size even smaller.