Compress PDF Files

Reduce PDF file sizes safely directly in your web browser. Perfect for shrinking scanned documents and presentations without uploading to a server.

Upload PDF to Compress

Drag & drop a single PDF file here.
Dramatically reduce file sizes for easy sharing.

Reduce PDF File Size Instantly and Securely

Big PDF files cause endless frustration when you try to send them through email or upload them to government and school portals. Our free PDF compressor shrinks your documents down to a manageable size. The best part is your privacy. All processing happens right inside your web browser, meaning your sensitive files never leave your computer.

Total File Privacy

We respect your data. Your files are compressed locally on your machine. No server uploads are required to shrink your PDF.

Advanced Flattening

We use a flattening technique that repaints your pages into optimized images. This is incredibly effective for reducing the size of scanned paperwork.

You Control Quality

Choose exactly how much compression you want. Dial down the resolution for the smallest file possible, or keep it high to preserve crisp details.

How to Compress a PDF Document

1

Select Your File

Drag and drop the heavy PDF into the upload area above. The tool will quickly analyze the total page count and original size.

2

Adjust the Settings

Use the panel on the right to pick your preferred compression level. If you just need a small file for email, the 'Recommended' setting usually works best.

3

Compress and Save

Hit the compress button and wait for the progress bar to finish. You can then preview the newly shrunk document and download it back to your device.

Frequently Asked Questions

How do I reduce a PDF file size without losing quality?
Upload your document and select the 'Recommended' compression level in our tool settings. This option is designed to find the perfect balance between keeping the text readable and drastically reducing the file size.
Is it safe to compress confidential business documents here?
Yes. We built this tool with privacy as the main focus. Your file stays on your local device the entire time. The compression happens inside your web browser, meaning we never upload, store, or see your sensitive data.
Why did my compressed PDF turn text into images?
Our compressor uses a flattening method to achieve massive size reductions. It essentially takes a high quality picture of each page and builds a new, smaller document. This is highly effective for file size reduction, but it does mean previously selectable text becomes part of the page image.
What is the maximum file size I can upload to compress?
Because the tool uses your own computer memory rather than a cloud server, the limit depends on your device hardware. Most modern laptops and phones can easily handle compressing PDFs up to 100 MB.