PDF Compressor
Compress PDF files online for free. Reduce PDF file size for easy sharing and emailing.
Drop your PDF here or click to upload
Drag & drop or click to browse your files
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Upload a PDF to preview
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How to Use PDF Compressor
Upload PDF
Click upload or drag and drop your PDF onto the tool area.
Set Quality
Choose a compression quality level based on how small you need the file.
Compress
Click Compress PDF. Processing happens instantly in your browser.
Download
Preview the result and click Download to save your compressed PDF.
Frequently Asked Questions
Yes, completely free! No signup, no account, no hidden fees. Use it unlimited times.
No. All processing happens locally in your browser. Your PDF is never uploaded anywhere.
Each page is rendered and re-saved as a compressed image inside a new PDF, which greatly reduces file size for image-heavy or scanned documents.
Because pages are compressed as images, text will no longer be selectable in the output file. This tool is best suited for scanned documents and image-heavy PDFs.
How to Use PDF Compressor
PDF Compressor reduces your PDF file size by re-compressing each page, right inside your browser. Upload your file, set a quality level, and download a smaller version.
Smaller PDF files are easier to email, upload to forms with size limits, and share over messaging apps.
There is no installation required, and the compression happens securely in your browser without storing your files on any server.
PDF Compressor works especially well on scanned documents and image-heavy PDFs, letting you balance file size against visual quality.
Tips for Best Results
- Higher compression levels work best for PDFs containing mostly text, while image-heavy PDFs may need a lighter touch to stay readable.
- Compressing a PDF is useful before emailing large documents that exceed attachment size limits.
- Check that any important images or diagrams in the PDF remain clear after compression.
- Compare the compressed file size to the original to see how much space you've saved.
Frequently Asked Questions
Is PDF Compressor free to use?
Yes, PDF Compressor is completely free to use with no signup or hidden charges.
Do I need to install any software?
No, PDF Compressor works entirely in your browser on any device with no downloads required.
How much can the file size be reduced?
It depends on your original PDF and chosen quality, but image-heavy PDFs typically shrink significantly.
Will compressing my PDF make the text harder to read?
Text usually stays sharp since it's rendered as vector data, not pixels. It's mainly embedded images inside the PDF that may lose some detail with higher compression.
Why would I need to compress a PDF?
Compressing a PDF is useful for emailing large documents, uploading to websites with file size limits, or simply saving storage space.