useonlinetools

Compress PDF

Shrink your PDF file size without sacrificing readability — compress locally, no uploads, instant download.

Drop a PDF file here
PDF files only — up to 100 MB
Your PDF is processed locally — nothing is ever uploaded.
how to use

How to compress a PDF

1

Upload your PDF

Drop your PDF file into the tool. It's read locally in your browser — no file is transmitted to a server.

2

Choose compression level

Select the balance between file size and quality that works for your use case — maximum compression for email, or balanced for archiving.

3

Compress

Your PDF is compressed in your browser. The process removes redundant data and optimizes images while keeping text crisp.

4

Download the compressed file

Save the smaller PDF to your device. Compare the original and compressed sizes to see the reduction.

about this tool

Compress PDF without giving up your privacy

Online tools often ask you to upload your files before processing them. For anything sensitive — contracts, statements, personal documents — that's a real privacy concern. This tool takes a different route: everything runs entirely in your browser. Your files are opened locally, processed in your device's memory, and handed back to you. No copy is ever transmitted to a server, which means it works offline too.

Privacy by design. This tool loads once and runs entirely in your browser tab. Close the tab and nothing remains. No cookies, no tracking, no server — just the utility you need, instantly.

faq

Compress PDF — frequently asked questions

No. Compression runs entirely in your browser. Your PDF never leaves your device, and no server ever sees your document.
It depends on the content. PDFs with many images can often shrink by 50-80%. Text-heavy documents may see more modest reductions. The tool shows you the before and after sizes.
No. The compressor is designed to preserve text clarity. Images may be slightly resampled depending on the compression level you choose, but text stays sharp and selectable.
No fixed cap. Large PDFs (100MB+) are processed locally, so the only limit is your device's available memory.
The tool processes one PDF at a time. For batch compression, process files one after another — each takes seconds since nothing is uploaded.

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