Docket № 03 · Optimize
Compress PDF to Reduce File Size
Shrink file size with a quality slider, or aim for an exact size in KB.
Drop files here, or click to browse
PDF files onlyProcessed entirely in your browser — nothing is uploaded
Shrink a heavy PDF so it fits under email and upload limits. The tool rebuilds each page at a lighter image quality that you control, trading a little sharpness for a much smaller file.
Compression is done locally in your browser — handy when the document is a scanned ID, bank statement or anything you'd rather not hand to a third-party server.
How to compress PDF to Reduce File Size
- Add the PDF you want to make smaller.
- Choose a quality level to balance size against clarity.
- Download the compressed PDF.
Stays on your device
Every file is processed inside your browser. Nothing is uploaded, so your documents never touch a server.
No sign-up, no watermark
No account, no daily cap and nothing stamped on your file. Open the tool and get your result.
Works without internet
Once this page has loaded you can switch off Wi-Fi and the tool keeps working — proof nothing leaves your device.
Frequently asked questions
How much smaller will my PDF get?
It depends on the content. Scanned or image-heavy PDFs shrink the most; files that are mostly plain text have less to compress.
Why does compression lower image quality?
To cut size, pages are re-encoded as compressed images. A lower quality setting removes more detail but saves more space, so you pick the balance.