PDF Tools

Compress PDF


Shrink a bulky PDF to a smaller, more shareable size right in your browser — choose a compression level, see the savings, and download, with nothing uploaded.

Click to upload or drag & drop

Your PDF is processed in your browser and never uploaded

💡 About PDF compression

  • Private: the PDF is compressed in your browser and never uploaded.
  • Biggest savings come from scanned documents and PDFs full of photos.
  • If a PDF is mostly text, it may already be small — try the "Light" level first.

The Compress PDF tool reduces a PDF's file size so it is easier to email, upload, or store.

The compression happens in your browser, so your document is never uploaded.

How to compress a PDF

  1. Upload your PDF.
  2. Pick a compression level — stronger means smaller.
  3. Compress and download, and see how much you saved.

What compresses best

Scanned documents and PDFs full of photos shrink the most, because their images are re-encoded at a lower quality.

If your goal is fewer pages rather than a smaller file, the Split PDF tool extracts just the pages you need.

More PDF tools

Compression pairs well with the rest of the PDF suite. Combine files first with Merge PDF, or turn pages into images with PDF to Image.

Frequently Asked Questions

Is my PDF uploaded to compress it?

No. The PDF is compressed entirely in your browser, so even sensitive documents stay on your device.

Why did my PDF barely get smaller?

PDFs that are mostly text are already compact. This tool saves the most on scanned pages and image-heavy documents. Try a stronger level.

Does compression affect quality?

Yes. Each page is re-rendered as an image at a chosen quality, so a stronger setting means a smaller file but softer detail. Selectable text becomes part of the image.

Is there a size limit?

Because processing happens in your browser, the practical limit is your device memory. Very large PDFs may be slow on low-powered devices.