How to Compress PDF Online Free
Need to compress PDF online without installing software? pdfcorpus is a free online PDF compressor that reduces file size in your browser. Upload, choose a quality mode, and download — files auto-delete in 2 minutes.
Ready to compress? Use the free pdfcorpus PDF compressor.
Compress PDF Online Free →Why compress PDF online?
Large PDFs cause email bounces, slow uploads to job portals, and failed form submissions. When you compress PDF online free, you shrink the file while keeping text readable. Common reasons include:
- Email attachments over 10–25 MB limits
- Government and university application portals with size caps
- Faster sharing on WhatsApp, Slack, or cloud drives
- Reducing storage on phones and laptops
Steps to compress PDF online with pdfcorpus
- Go to pdfcorpus.com — the official PDF Corpus PDF compressor.
- Drop your PDF or click Choose PDF File.
- Select Best Quality (light compression), Good Quality (balanced), or Smallest Size (maximum compression).
- Optionally adjust the target size slider for aggressive reduction.
- Click compress and download your smaller PDF immediately.
Best settings when you compress PDF
For documents with mostly text, Good Quality usually gives the best balance. Scanned PDFs and photo-heavy files may need Smallest Size to reach targets like 200KB or 500KB. pdfcorpus keeps vector text sharp instead of blurring pages like some basic compressors.
Compress PDF vs other tools
Desktop apps require installation. Cloud tools often need signup or add watermarks. pdfcorpus lets you compress PDF online with no account, no watermark, and automatic file deletion for privacy.