Compress & Optimize PDF Files Online — Free & Private
Reduce PDF file size and optionally remove metadata. All in your browser.
Click to upload or drag and drop
PDF files only
How it works: You can downscale embedded images (re-render pages at lower resolution) for large size savings on image-heavy PDFs. The tool can also re-save the PDF to normalize its structure and optionally strip metadata (title, author, etc.) for additional reduction and privacy.
Privacy: Your PDF is processed entirely in your browser. No files are uploaded to any server.
Privacy first: This tool runs entirely in your browser. Your data never leaves your device.
Reduce the file size of your PDF documents for easier sharing and faster email delivery, all without leaving your browser. The optimizer removes redundant data and optionally strips metadata to shrink file size while maintaining readability. No files are uploaded to a server.
How to Use PDF Size Optimize
- Upload your PDF: Click "Choose File" or drag your PDF onto the upload area.
- Choose options: Optionally enable metadata removal for extra size savings.
- Optimize: Click "Optimize PDF" to start the compression process.
- Download: Download the smaller, optimized PDF to your device.
Features
- Reduces PDF file size by removing redundant objects
- Optional metadata stripping for additional savings
- Runs entirely in your browser — no server upload
- Free to use with no account required
- Shows original vs. optimized file size
- Preserves document readability and structure
Common Use Cases
PDF compression is essential when attaching files to emails with size limits, uploading documents to portals with file-size caps, or reducing storage usage. It is widely used by professionals sharing contracts, reports, and presentations.
Frequently Asked Questions
- How much will my PDF be compressed?
- Results vary by PDF. Documents with many images or redundant objects typically see the largest reductions. Text-only PDFs may see modest savings.
- Will compression affect text or image quality?
- This tool performs lossless optimization — it removes redundant data without re-encoding images, so visual quality is unchanged.
- What is metadata and should I remove it?
- PDF metadata includes information like the author name, creation software, and timestamps. Removing it can slightly reduce file size and is useful when sharing documents publicly.
- Are my files uploaded to a server?
- No. Optimization runs entirely in your browser using JavaScript. Your files never leave your device.