PDFStay

Compress PDF Online

Reduce PDF file size for email, forms, and upload limits while ordinary compression work stays in your browser.

Open Compress PDF

How it works

  1. Choose a PDF from your device.
  2. Pick the compression mode that fits the file.
  3. Preview the result and download the compressed PDF.

Privacy / no upload

Your PDFs stay on your device for normal PDFStay tools. Browser-based processing keeps ordinary compression, merging, splitting, organizing, and conversion work local by default.

Common use cases

  • Compress scanned PDFs before submitting forms.
  • Reduce a PDF for email attachments.
  • Fit a document under a portal upload limit.

FAQ

Can I compress a PDF without uploading it?

Yes. PDFStay runs normal PDF compression in your browser, so your PDFs stay on your device.

Do I need an account to compress a PDF?

No. Basic compression can start without registration. Pro unlocks larger files and advanced controls.