PDF Tools

Free Online PDF Compressor

Compress PDF files online for free. Reduce file size for email, uploads, and storage while keeping your document readable and professional.

How it works

1. Upload a PDF file (up to 200 MB) by dragging and dropping or browsing.
2. Choose a target size or compression level that fits your needs.
3. Download the optimized PDF when processing finishes.

Best uses

• Email attachments that exceed size limits.
• Forms, proposals, and scanned PDFs that need smaller uploads.
• Archiving documents with less storage overhead.
• Documents shared through portals or document management systems with size caps.

Why use this tool

• Reduce attachment size for email and upload portals.
• Keep files easier to store, share, and back up.
• Use a browser-based workflow without installing desktop software.
• No account, no watermarks, and no hidden limits.

Compression tips

For screen-only documents, aggressive compression is usually invisible and produces the smallest files. For documents that will be printed, choose a lighter compression level to protect image quality. When you are merging several PDFs, compress each one first for the best overall result. See the full compression guide for more detail.

Privacy and access

PDF.OpenServiceTools is part of the OpenServiceTools network. Documents are processed in your browser, and no account is required. You can review our Privacy Policy, Terms of Service, and About page, or browse related tools such as the PDF Merger and Image to PDF converter.