Where PDF weight comes from
Most oversized PDFs are heavy because of high-resolution images and embedded scans, not text. Compression re-encodes those images at a sensible resolution, which is why a scanned document can shrink dramatically while a text-only one barely changes.
Choosing a quality mode
High-fidelity mode keeps documents looking pristine while removing waste; stronger modes push the size down further for cases where a smaller file matters more than perfect sharpness. Pick based on whether the PDF is for archiving or quick sharing.
Compress without uploading
Emailing a PDF to a compression website means handing over its contents. Local compression keeps the file on your machine, so you can shrink invoices, IDs, and contracts without exposing them.
Features
- 01
- Three optimization quality modes
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- Real-time file size reduction display
- 03
- 100% browser-side processing
- 04
- No quality loss in high-fidelity mode
