Reduce PDF Size —
Shrink Instantly
Make your PDF smaller for email, upload, or sharing — without losing readability. Choose your compression level and download in seconds.
👉 Reduce PDF Size NowWhy Is Your PDF Too Large?
PDFs grow large for several reasons: high-resolution images embedded in the file, fonts stored in full, or layers and metadata that accumulate over time. A 20MB PDF isn't unusual — but it's often unnecessary. Most PDFs can be shrunk significantly without any visible change in quality.
PDFix uses Ghostscript under the hood to intelligently downsample images and remove redundant data, giving you a smaller file that still looks great. If you're working with images, you can also convert images to PDF first and then compress the result.
Choose Your Compression Level
Small
72 DPI — Smallest file. Best for screen-only viewing and web sharing.
Balanced
150 DPI — Great quality with meaningful size reduction. Best for email.
High Quality
300 DPI — Minimal compression. Best for printing or archiving.
How to Reduce PDF Size in 3 Steps
Common Reasons to Reduce PDF Size
- Email attachment size limits (Gmail limit is 25MB, many corporate systems are lower)
- Uploading to government portals with strict file size restrictions
- Saving storage space on your device or cloud
- Faster loading when sharing via link or embedding in a website
- WhatsApp and messaging app upload limits
After reducing your PDF, you might also want to merge it with other PDFs or add a watermark before sharing. For email-specific optimization, see our optimize PDF for email guide.
Shrink Your PDF Now
See exactly how much space you save. Results shown with before/after comparison. Free, private, instant.
👉 Open PDF Compressor