Compress PDF
Reduce PDF file size without losing quality. Fast and private. All processing happens locally in your browser — your files never leave your device.
Free PDF Compressor — Reduce PDF Size Without Losing Quality
Toolify's PDF Compressor reduces your PDF file size for easy sharing via email or uploading to web forms — without sending your files to any server. Image-heavy PDFs can be reduced by 50–80%; text-based PDFs typically see a 10–30% reduction.
All compression runs in your browser using JavaScript. Your documents stay completely private and the output is immediately available to download.
Frequently Asked Questions
How much can the PDF size be reduced?
Compression results depend on the content of the PDF. Image-heavy PDFs can be reduced by 50–80%. Text-only PDFs typically see a 10–30% reduction.
Will compression affect the readability of my PDF?
The tool uses lossless compression techniques where possible. For image-heavy PDFs, slight quality reduction may occur at high compression levels, but text remains crisp and readable.
Why do I need to compress a PDF?
Email systems often have attachment size limits (typically 10–25MB). File upload forms on websites may also cap uploads. Compressed PDFs are faster to share, store, and open.
Is my PDF sent to a server?
No. All compression runs in your browser — your document is never uploaded anywhere.
Can I compress a scanned PDF?
Yes. Scanned PDFs are essentially image files, and compressing their images can significantly reduce the file size.