PDF Toolkit · Editing

Compress PDF,
right in your browser.

Make a PDF smaller so it fits an upload limit or an email attachment. Pick a compression level or type a target size.

Text kept on Low and Medium

Optional target size

Runs in your browser

Browser workspace

Review limitations

Check supported output

Select Compress PDF file

or drag and drop here — up to 25MB free

Accepts: .pdf

Before you start

Make a PDF smaller by re-compressing its images. Optional target size in KB.

Workspace availability

This page has a wired workspace. Availability of external services and individual output cases must still be checked.

Before you start

Supported input selection: .pdf.

Review the result

This upload workspace processes the selected files in the browser. Review the downloaded output before use.

Use compress pdf in three steps

Select supported files

Choose files using the input control or drag and drop.

Set your options

Review the selected files and available controls before processing.

Review the output

Download only a completed result and check it before use.

Low, Medium and Strong

Low and Medium re-compress the JPEG photos inside the PDF. The text stays as real text, so you can still select and search it, and links and form fields keep working. Medium squeezes the photos harder than Low. These levels suit most scanned documents and photo-heavy files.

Strong rebuilds every page as an image. This usually gives a much smaller file, but text can no longer be selected or searched, and links and form fields are lost. Use Strong only when the other levels cannot reach the size you need and a flat copy is acceptable.

Using a target size

If an upload field states a maximum, type it in the target size box. The tool works towards that size and tells you if it cannot reach it. When it says done, the file is at or under the target.

Why some PDFs barely shrink

A PDF made from a word processor is mostly text and fonts, with little image data. Low and Medium only recompress photos, so a text-only PDF may shrink very little. That is normal, and such files are usually small already. A scanned document, where every page is a photo, normally shrinks much more.

Everything happens in your browser, so your PDF is not uploaded. Open the compressed file and zoom in on small print before you submit it, to make sure it is still readable.