Compress PDF
Reduce PDF file size for email and uploads.
Runs in your browserFree — no signup
How to use Compress PDF
Compress PDF shrinks a heavy PDF so it fits an email attachment limit or an upload form. Each page is re-rendered and re-encoded at a smaller size right inside your browser, so the document never leaves your device.
Step by step
- 1Pick a compression level — Balanced suits most documents.
- 2Drop the PDF (scans and image-heavy files shrink the most).
- 3Compare the Before and After page thumbnails.
- 4Download the compressed PDF, or try a stronger level if it is still too big.
What to expect
- Scanned or image-heavy PDFs usually drop 60-90%; PDFs that are mostly plain text are already small and gain less.
- Pages are flattened to images, so selectable text and links are removed — keep the original if you need them.
- A 20-page scan takes a few seconds; very large files depend on your device.
Common use cases
- Preparing a contract, invoice or report before sending it.
- Assembling scanned pages into a single tidy document.
- Extracting just the pages a colleague or portal actually needs.
- Fixing a PDF that a scanner or printer produced badly.
Privacy & data
Everything runs locally in your browser. Your file is never uploaded to a server, so nothing leaves your device.
Frequently asked questions
Related tools — send your output onward