Compress PDF
Reduce PDF file size so it is easy to email, upload and share. Works in your browser, nothing is uploaded.
Private: your files are processed on your device and never uploaded.
How to use Compress PDF
- Add your PDFDrag and drop the file onto the box or click to choose it.
- Pick a modeBasic keeps text selectable. Strong gives the smallest file.
- DownloadPress Compress PDF, then save the smaller file.
Compress PDF guide and tips
Strong mode redraws each page as a compressed image. It usually gives the biggest saving, which makes it ideal for scanned documents, photo-heavy files and anything that has to fit an email or upload limit. The trade-off is that text in the result can no longer be selected or searched.
Basic mode rewrites the PDF structure without touching the content. Text stays selectable and quality is unchanged, but savings are often small, especially on files that were already optimized.
If the result is still too large, choose the Smallest size option or split the document into parts with the Split PDF tool.
Compress PDF FAQ
How much can a PDF be compressed?
Scanned documents and image-heavy files often shrink by 50 to 90 percent in Strong mode. Text-only PDFs are already small, so savings are limited.
Will compressing reduce quality?
Strong mode lowers image quality to save space. Choose High quality for a good balance, or Smallest size when file size matters most.
Are my files uploaded to a server?
No. Everything happens inside your browser on your own device. Your PDFs and images are never sent to our servers, so your documents stay private.
Is this tool really free?
Yes. It is free to use with no sign-up, no watermark and no daily limit. The site is supported by advertising.