Why Compress PDF Files?
PDFs with high-resolution images, embedded fonts, and complex layouts can become very large â 10MB, 50MB, even 100MB+. Email providers like Gmail cap attachments at 25MB. Many websites, job portals, and government forms have strict file size limits. Our free PDF compressor reduces file size while keeping the document fully readable.
How to Compress a PDF Online
- Upload Your PDF â Visit our free PDF compressor and drag your PDF file into the upload area. Files up to 50MB are supported.
- Choose Compression Level â Select from Basic (near-original quality) to Maximum (smallest file size). Level 3 (Basic) is recommended for most documents â excellent size reduction with minimal quality loss.
- Compress â Click "Compress PDF" and see the before-and-after file sizes instantly.
- Download â Save your compressed PDF. The original file is automatically deleted after 1 hour.
Compression Best Practices
- Text-heavy PDFs: Use Maximum compression (level 4). Text compresses very well and remains perfectly readable.
- Image-heavy PDFs: Use Basic compression (level 3). This preserves image quality while still reducing file size significantly.
- For email attachments: Compress first, then send. Most PDFs shrink by 30-70%.
- For archiving: Use Maximum compression. If you only need to store the document, smaller is better regardless of minor quality loss.
Frequently Asked Questions
Does compression reduce PDF quality?
At Basic and Medium levels, quality loss is minimal. At Maximum, images within the PDF may appear slightly softer. Text remains fully sharp at all levels.
How much can a PDF be compressed?
Typical reduction is 20-60% depending on the original content. PDFs with lots of images compress more than plain-text PDFs. You will see the exact reduction percentage after processing.
Is my PDF secure during compression?
Yes. Files are processed on our secure servers and automatically deleted after 1 hour. We never access, read, or store the content of your documents.