Compress PDF— Free & Private
Reduce PDF file size without losing quality, right in your browser.
Drop a PDF here or click to browse
Single PDF file
All processing happens in your browser. No files are uploaded.
What Is PDF Compression?
PDF compression reduces the file size of a PDF document by optimizing embedded images, removing redundant metadata, and streamlining internal structures without noticeably degrading visual quality. Smaller PDFs are easier to email, upload to portals, and store on disk. Our compressor processes everything inside your browser so your sensitive documents never leave your machine.
How to Use Compress PDF
Upload your PDF
Select a PDF file from your device or drag it into the upload area.
Choose compression level
Pick a compression preset — balanced, maximum size reduction, or best quality.
Compress and download
Click Compress, review the new file size, and download the optimized PDF.
Why Use Our PDF Compressor?
Frequently Asked Questions
How much can I reduce my PDF file size?
Results vary depending on the content. Image-heavy PDFs often shrink by 50-80%, while text-only documents see smaller reductions since they are already compact.
Does compression affect the text quality in my PDF?
No. Text, vector graphics, and fonts remain sharp. Compression primarily targets embedded raster images and redundant internal data.
Can I compress password-protected PDFs?
You will need to enter the password first so the tool can read the file. The compressed output can be re-encrypted if desired.