Will compressing reduce the quality of my PDF?

Text and vector content stay sharp — the tool optimises the file structure rather than degrading your pages.

How much smaller will my PDF be?

It depends on the original. Documents with lots of redundant structure or metadata shrink the most.

Is there a file size limit?

No fixed limit. Processing runs on your own device, so very large files depend on your computer's memory.

Compress PDF Online Free

Compress PDF files to make them easier to email or upload. The tool rebuilds your document with optimised object streams and strips unused metadata, so the file gets smaller without touching the readable content.

Drop your file here

Nothing leaves your device — processing is local.

About the Compress PDF tool

Great when a form, portal or mail server rejects an oversized attachment.

Common use cases

Meeting an email attachment size limit
Uploading documents to a job or visa portal
Shrinking scanned paperwork before archiving

How to compress pdf

1Select the PDF you want to compress.
2Click Compress PDF and wait a moment.
3Download the smaller version of your document.

Frequently asked questions

Will compressing reduce the quality of my PDF?: Text and vector content stay sharp — the tool optimises the file structure rather than degrading your pages.
How much smaller will my PDF be?: It depends on the original. Documents with lots of redundant structure or metadata shrink the most.
Is there a file size limit?: No fixed limit. Processing runs on your own device, so very large files depend on your computer's memory.

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