Compress PDF files online to reduce document size for email, cloud storage, and web sharing.
MixToolsHub processes your PDF in the browser, so the original file stays on your device while you choose the balance between quality and file size.
Key features
Choose light, balanced, or strong compression
Process text and scanned PDFs
Keep bookmarks and optionally remove metadata
Skip selected pages when you need original quality
How to use it
Upload your PDF：Click the upload area or drag and drop your PDF file onto the page. Files are processed entirely in your browser — nothing is sent to any server.
Choose compression level：Select a compression preset: Low (best quality), Medium (balanced), or High (smallest file size).
Download the compressed file：Click "Compress" and wait a moment. Once done, click "Download" to save your smaller PDF. The original file is never modified.
Frequently asked questions
Is this PDF compressor free?
Yes. You can compress PDF files online for free without installing desktop software.
Are my PDF files uploaded to a server?
No. PDF compression is performed in your browser, and the original file is not sent to MixToolsHub's server.
Can I control the PDF compression quality?
Yes. Choose light, balanced, or strong compression depending on whether you prefer higher quality or a smaller file.