Compress PDF Files — Reduce Size for Free
Reduce PDF file size without losing quality.
How to Compress PDF
- Upload the PDF file you want to compress by clicking "Select PDF" or dragging it into the upload area.
- Choose your compression level: light (best quality), medium (balanced), or strong (smallest size).
- Click "Compress PDF" to reduce the file size instantly.
- Download your compressed PDF — the file size will be significantly smaller.
About Compress PDF
Large PDF files can be a headache — they are slow to email, difficult to upload to web forms, and take up unnecessary storage space. Our free PDF compression tool reduces file size by optimizing images, removing duplicate resources, and cleaning up unnecessary metadata, all while preserving the visual quality of your document.
The tool offers multiple compression levels so you can choose the right balance between file size and quality for your needs. Light compression keeps everything looking virtually identical while still achieving meaningful size reduction. Strong compression is ideal when you need the smallest possible file size, such as for email attachments with strict limits.
All compression happens directly in your browser — your files are never uploaded to a server. This makes the process both faster (no upload/download wait) and more secure (your documents stay private).
Multiple compression levels
Choose light, medium, or strong compression to match your needs.
Preview before download
See the compressed result and file size before committing.
Privacy-first
All compression happens in your browser. Files never leave your device.
Frequently Asked Questions
How do I reduce PDF file size?
Upload your PDF to our compression tool, select your preferred compression level, and click Compress. The tool optimizes images and removes unnecessary data to reduce file size while maintaining readability.
Does compressing a PDF reduce quality?
Light and medium compression preserve nearly all visible quality. Strong compression may slightly reduce image quality but keeps text perfectly sharp. You can preview the result before downloading.
How much can I reduce my PDF size?
Results vary depending on the content. PDFs with many high-resolution images can often be reduced by 50-80%. Text-heavy PDFs with few images may see smaller reductions of 10-30%.
Is PDF compression free?
Yes, our PDF compression tool is completely free with no limits on file size or number of compressions. No account or sign-up required.