Rebuild smaller. Stay honest.

Private by design — nothing leaves this device.

Compress a PDF in your browser

Reduce PDF size with a browser-based rebuild on this device. Pick how aggressive to go, compare before and after, and download the result — nothing is uploaded. Some already-efficient PDFs only shrink a little.

Common questions

Is this a browser-based PDF compressor?

Yes. Compression runs locally in your browser. It is not a cloud upload compressor, and it is not the same as Adobe Acrobat’s advanced desktop or server engines.

Does Slim upload my document?

No. Nothing is sent to a server for “cloud compress.” Your PDF stays on this device.

Which preset should I pick?

Rebuild lightly keeps more original structure with less quality risk. Balanced and Smaller re-encode pages as JPEGs for clearer size wins when you can trade a bit of quality.

Will every PDF get smaller?

Not always. If the file is already compact, you’ll see little gain and Bento Tools will say so rather than exaggerate.

Related tools