// organize

Merge PDFs Split PDF Reorder pages Extract pages Delete pages Rotate pages Booklet layout

// edit & sign

Draw & sign Fill forms Add watermark Add page numbers Edit metadata

// convert

Images to PDF PDF to images Scan ID to PDF OCR text View PDF

// protect & optimize

Lock / unlock Compress PDF

Compress PDF

Shrink a PDF for email or upload limits, with a choice of compression levels. Runs entirely in your browser.

Nothing above is ever sent to a server — check your browser's network tab if you'd like to see for yourself.

How to compress pdf

  1. Add your file. Click the drop zone or drag a PDF onto the page.
  2. Choose a compression level. Higher compression means a smaller file but lower image quality.
  3. Compress. Each page is re-rendered and re-encoded directly in your browser.
  4. Download. Save the smaller file straight to your device.

Why do this locally instead of online?

Compressing a file is often the very last step before sending it somewhere — attaching it to an email, uploading it to a portal with a size limit. This tool re-renders and re-encodes pages using libraries running directly in your browser.

Frequently asked questions

Will compression make my text blurry?

Very small text can look softer at higher compression levels — try a lower setting for text-heavy documents.

Will my text still be selectable after compressing?

Depending on the level chosen, pages may become images during compression, meaning text is no longer selectable.

What's the best setting for a scanned document?

Higher compression usually gives large size savings on scans with little visible quality loss.

How much smaller will my file get?

It depends heavily on the original content — scanned, image-heavy PDFs shrink the most.

Related tools