PDF tool
Compress PDF
Shrink a PDF for email, uploads, and forms. Choose a compression level, preview the new size, and download — processing stays on your device.
Private by design. Nothing is uploaded. Your PDF is compressed locally; we never see the file.
How it works
- Choose a PDF from your device.
- Pick Low, Medium, or High compression.
- Download the smaller PDF when ready.
Frequently asked questions
Is this PDF compressor free?
Yes. Compress PDF online free with no account and no watermark on the output file.
How does compress PDF work in the browser?
Pages are rendered and re-encoded as optimized images, then rebuilt into a new PDF. That usually cuts size a lot for scanned or image-heavy files.
Will text stay selectable?
After compression, pages are image-based, so text may no longer be selectable or searchable. Use a lighter level if you need sharper text.
Is my PDF uploaded to your servers?
No. Compression runs entirely in your browser. We do not receive or store your document.
Why did my PDF not get much smaller?
Already-optimized text PDFs shrink less than photo scans. Try a higher compression level, or compress large images before making the PDF.