Question 1

Is my PDF safe? Does it get uploaded anywhere?

Accepted Answer

Your file never leaves your device. Everything happens locally in your browser, so there's nothing to worry about.

Question 2

Which compression level should I pick?

Accepted Answer

Balanced is the best starting point for most people — it makes files noticeably smaller without any visible quality loss. Use Ultra when you need the smallest possible file and don't mind a slight drop in image sharpness. Choose Archival when quality matters more than size, like for documents you're keeping long-term.

Question 3

Can I compress multiple PDFs at once?

Accepted Answer

Yes — just add all your files at once. We'll compress them one by one and let you download each individually or grab them all as a single ZIP file.

Question 4

What if my PDF doesn't get smaller?

Accepted Answer

Some PDFs are already well-optimized, especially text-heavy ones. If that happens, we'll give you back the original so you're never left with a larger file than you started with.

Compress PDF

What file formats are supported?

Will my PDF still look good after compression?

Can I compress many PDFs at once?

Are my files sent anywhere?

What file formats are supported?

Will my PDF still look good after compression?

Can I compress many PDFs at once?

Are my files sent anywhere?