Document tool

Compress PDF Online

Reduce PDF file size with adjustable quality and resolution, then compare the original and compressed sizes before downloading.

PDF

Drop a PDF here, or click to browse

Files are processed locally and never uploaded.

Reading your PDF...

Page 1 preview

document.pdf

PDF

Compression level

Resolution

Compressed preview

document-compressed.pdf

Compression complete

Original

Compressed

Saved

How to use this tool

Choose a PDF from your device and review the preview.
Select compression quality and resolution, then start compression.
Compare the output size and page quality before downloading. Keep the original file.

Example and use case

For an image-heavy scan, try medium compression first. Compare the output at 100% zoom before selecting a stronger setting.

Limitations to check

The compressor renders pages as images. Selectable text, links, forms and accessibility tags may be lost. Text-heavy PDFs may grow rather than shrink. There is no guaranteed size or percentage reduction; large files use device memory.

Processing and privacy

The tool's browser code handles entered text or selected files locally. Optional URL imports and external resources can make network requests. This website also uses third-party scripts, including analytics and advertising. Read the privacy policy and use sample data when testing sensitive workflows.

Found a problem? Report a tool issue with the browser version and steps to reproduce it. Avoid sending private document content or credentials.

Frequently asked questions

Will every PDF become smaller?

No. Savings depend on the original content and settings. Already optimized or text-heavy files may become larger.

Will compressed text remain selectable?

This tool rebuilds PDF pages from rendered images, so text is generally no longer selectable. Retain the original when searchability or accessibility matters.

Are PDF documents uploaded for compression?

The compression code reads and renders the selected document in your browser. The page still loads site resources and third-party libraries over the network.

Related tools

Practical guides

How to Reduce PDF File Size and Check What Compression Changes