Compress PDF
Rebuild a PDF more efficiently to reduce its file size.
How to use Compress PDF
- Add your PDF file.
- Select Optimise PDF.
- Read the size comparison shown after processing.
- Download the optimised file.
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Frequently asked questions
How much smaller will my file get?
It depends entirely on the file. Documents bloated by repeated editing can shrink noticeably; a scan made of large photographs will barely change, and we show you the real before-and-after numbers either way.
Is anything lost during optimisation?
No. This is a lossless structural rewrite — page content, fonts and images are unchanged.
Is Compress PDF free to use?
Yes. Every tool on Pdflify is free and needs no account.
Is my file uploaded anywhere?
No. This tool reads and rewrites your file inside your browser tab using JavaScript, so the document itself never leaves your device.
Does it work on a phone?
Yes. The workspace is responsive and works with touch, though very large files depend on your device's memory.
Ready to simplify your PDF workflow?
Every Pdflify tool runs in your browser. Pick one and get your file sorted in a few clicks.