Compress PDF
Shrink a PDF without wrestling with settings. Pick how small you need it — maximum squeeze, a balanced middle, or quality first — and download a lighter file in seconds.
Compression rebuilds each page as an optimised image — ideal for scanned and image-heavy PDFs and for shrinking files to meet upload or email limits. Everything happens in your browser; your file never leaves your device.
Compression is most useful when a PDF is too large to email, upload to a form, or share in a chat, and a smaller file will still read clearly on screen. As the file size drops, image and text quality can drop too, so choose the lightest compression that meets the size limit rather than the smallest file by default. Keep the original file for printing or archiving, and check the compressed copy page by page before you send it.
How to Compress a PDF
Three steps between you and a smaller file.
1. Add your PDF
Click the box or drag your file in. Its size and page count appear right away.
2. Pick a compression level
Maximum for the smallest file, Balanced for everyday use, or Quality when looks matter most.
3. Download the result
See exactly how much you saved, then download the compressed PDF. If your file is already optimised, we tell you instead of pretending.
Why Use Our PDF Compressor?
Simple, fast, and completely private tools designed for everyday use.
Real Savings, Shown Upfront
You see the original size, the new size and the percentage saved before you download anything.
Three Levels, No Guesswork
Email limits, upload caps or print quality — choose the level that fits the job.
Honest Results
If a PDF cannot be made smaller, the tool says so and hands back your original rather than a bigger "compressed" file.
Private by Design
Compression runs entirely in your browser. Your document is never uploaded to a server.
Common Questions About PDF Compression
It rebuilds each page as an optimised image at the resolution and quality you pick. Scanned and image-heavy PDFs usually shrink dramatically; already-optimised files may not shrink at all — and the tool tells you when that happens.
Balanced mode keeps pages sharp for reading and printing at normal sizes. If you need the crispest result, choose the Quality level; if file size matters most, choose Maximum.
Start with Balanced. If the file is still above the limit, run it again on Maximum — that usually gets a document under common 5–10 MB caps.
The work happens on your own device, so the practical limit is your device’s memory. Files of a few dozen megabytes work fine on most modern phones and computers.
No. Everything runs locally in your browser with JavaScript — your PDF never leaves your device.
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Ready to Compress Your PDF?
Reduce your file size in seconds. 100% free and client-side private.