How to Compress a PDF — Reduce File Size for Email & Upload
Learn how to make your PDF files smaller for email attachments, uploads, and sharing. Step by step guide to reducing PDF file size.
What You Need
- A PDF file that's too large for email, upload, or sharing
- A web browser (no software installation needed)
Step-by-Step: Compress a PDF
Step 1: Open the Compress Tool
Go to the Compress PDF tool. It works entirely in your browser — no files are uploaded to any server.
Step 2: Upload Your PDF
Drag and drop your PDF file onto the upload area, or click to browse and select it.
Step 3: Compress
Click the Compress button. The tool removes unused objects, strips redundant metadata, and optimizes internal streams — all without changing the visible content.
Step 4: Download
Download your smaller PDF. The tool shows the original and compressed file sizes so you can see the savings.
Tips for Best Results
- Compress before sending via email — Most email providers limit attachments to 25MB
- Compress after merging — Merged PDFs often contain redundant data that compression removes
- If compression isn't enough — Try splitting large documents into smaller files using the Split PDF tool
Related Tools
- Compress PDF — Reduce file size
- Split PDF — Break large PDFs into smaller files
- Merge PDF — Combine multiple PDFs