Compress PDF

Reduce PDF file size while maintaining the best possible quality. Works by re-rendering pages at optimal resolution.

compress

Drop a PDF file here or click to browse

One PDF file. Max 100 MB.

Other PDF Tools

How to compress a PDF online

Reduce PDF file size for email or uploads by re-encoding page content at a quality level you choose. Processing stays on your device.

Use this page as a full workflow guide: follow the steps below, then read the tips and FAQs before you start so you know what stays private, what limits apply, and how to get a reliable result on the first try.

How it works

  1. 1Upload your PDF.
  2. 2Pick a compression level (higher compression = smaller file, lower visual quality).
  3. 3Start compression and wait for the progress to finish.
  4. 4Download the smaller PDF.

Tips for better results

  • Keep a copy of your original file — exports and compressions can permanently reduce quality or change layout.
  • Prefer a modern desktop browser for large files; phones work for smaller jobs but can run out of memory.
  • If a step fails, reload the page and try a smaller file or a simpler setting before retrying.

Frequently asked questions

Will text stay sharp?

Results depend on the file. Scanned or image-heavy PDFs shrink more; text-only files may shrink less.

Why is compression slow?

Each page is rendered and recompressed in your browser. Large page counts take more time.

Can I undo compression?

Keep your original file. Compression creates a new download and does not overwrite the source.

Is there a size limit?

Limits depend on your device memory. Very large PDFs may fail on low-RAM phones.

Is my file uploaded to ToolJee for this tool?

Conversion and editing for PDF, image, video, and QR tools run in your browser. Optional File Share and Business cloud save only store what you explicitly choose to save or share.

Do I need an account?

Most tools work without signing in. File Share uploads and Business cloud save require an account.

Why add how-to text on a tool page?

So you can complete the job with clear expectations — privacy, limits, and common mistakes — even before you click the first button.