12 MB → 3 MB
Compress PDF files
Shrink PDFs that are too big to email or upload. Balanced mode recompresses the photos inside your PDF and keeps text sharp and selectable; Strong mode turns every page into an optimised image — ideal for scanned documents. Nothing is uploaded, and if a PDF can’t get smaller, you keep the original.
Private: your files never leave your device.
How to use Compress PDF
Step 1: Add one or more PDF files.
Step 2: Choose Balanced (keeps text) or Strong (best for scans) and press Start.
Step 3: Compare the sizes and download the smaller PDFs.
Frequently asked questions
How much smaller will my PDF get?
PDFs full of photos or scans often shrink by 50–90%. PDFs that are mostly text are already compact and may only shrink a little.
Which mode should I choose?
Balanced for documents with real text (contracts, reports) — the text stays selectable and searchable. Strong for scans and photo-heavy files where size matters most.
Is it safe for confidential documents?
Yes. Compression happens in your browser; the PDF never leaves your device.