PDFThings

Compress a PDF on Windows

Compress a PDF on Windows without installing anything. Open the tool in your browser, drag files from any folder, and download the result. Works on Windows 10 and Windows 11.

Drop a file here, or browse

PDF,APPLICATION/PDF

Windows users usually reach for a PDF program — but the built-in options are limited, and installing dedicated software for one job is overkill. This browser-based tool works on any Windows PC, including work machines where you can't install software.

Drag files straight from File Explorer into the upload area, choose your options, and download the result. Nothing is installed, and your files are deleted from our servers within 12 hours.

Why use this merger

No Windows install

Works in Edge, Chrome, or Firefox — no program to download, install, or keep updated.

Drag from File Explorer

Drag files straight from any Explorer folder directly into the tool window.

Works on locked-down PCs

Browser-based means it runs on work and school machines where installing apps is blocked.

Clean output

No watermark added — ready for sharing or printing.

How to compress a pdf on windows

  1. 1

    Open the tool in your browser

    Use Edge, Chrome, or Firefox on any Windows 10 or Windows 11 PC.

  2. 2

    Drag files from Explorer

    Drag files from any folder into the upload area, or click to browse.

  3. 3

    Process and save

    Run the compress and download the result to your chosen folder.

Related ways to merge PDFs

Frequently Asked Questions

Do I need any PDF software on Windows?
No. The tool runs in your browser, so there's nothing to install alongside it.
Does it work on Windows 11?
Yes. The tool works in any modern browser on Windows 10 and Windows 11.
Can I drag and drop from File Explorer?
Yes. Drag files from any Explorer folder directly into the upload area.