Compress PDF: free online tool
Compress PDF rewrites your document with optimized structure and strips unnecessary metadata to make the file smaller, while keeping text sharp.
Also searched as: compress pdf · reduce pdf size · make pdf smaller · pdf compressor online · compress pdf for email · shrink pdf file size
How to use Compress PDF
- Open Compress PDF and select your file.
- Start the optimization.
- Compare the new size and download the PDF.
What you can do
- Structure optimization and metadata removal
- Text stays sharp
- Shows the size you saved
Runs 100% in your browser · No upload · No sign-up · No limits
Privacy and where your file is processed
Runs 100% in your browser. Your file never leaves your device: no upload, no account and no usage limit.
Free usage limits
Free to use. In your browser: no account, no file-size limit and no usage limit. Advanced AI mode (our private GPU server): free account with 150 credits a month (1 credit per page for OCR and PDF to Word), files up to 50 MB and 100 pages. There is no paid tier.
Frequently asked questions
How much smaller will my PDF get?
It depends on the file. This tool optimizes structure rather than downsampling images, so image-heavy PDFs shrink less than documents with wasteful internal structure.
Will the quality drop?
No visible quality is lost because images are not re-compressed.