essentialsClient-Side Secure
Compress PDF
Reduce PDF file size while maintaining quality. Advanced optimization options for faster sharing and storage. Free online PDF compressor.
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How to use
- Drag your PDF (or several) into the upload area — everything stays in your browser.
- Pick a compression level: Light keeps the highest quality, Strong gives the smallest file.
- Click Compress and watch the before/after size and percentage saved for each file.
- Download the compressed PDF — no upload, no email, no watermark.
Common use cases
- Getting a PDF under an email attachment limit so it actually sends.
- Shrinking scanned documents and image-heavy reports before uploading to a portal.
- Reducing storage and speeding up sharing of large presentations or brochures.
Frequently asked questions
- Is my PDF uploaded to a server?
- No. Compression runs entirely in your browser, so your file never leaves your device — safe for confidential documents.
- Will compressing reduce quality?
- It can, depending on the level you choose. Light preserves near-original quality; Strong trades some image fidelity for the smallest size. Try Light first.
- Can I compress several PDFs at once?
- Yes — add multiple files and each is compressed independently with its own size summary.