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Compress PDF

100% Client-Side

Compress PDF reduces the size of your documents by optimizing embedded image layouts. It uses pdf.js to render page templates onto canvases at specific scale factors, then recompiles them into JPEG format at chosen quality values, saving storage.

Open Compress PDF

How It Works

1

Select PDF

Choose the PDF file you wish to compress to reduce its storage size.

2

Choose Quality

Select your preferred compression balance: Low (max compression), Medium (balanced), or High (best resolution).

3

Compress & Save

Click Compress PDF to downscale and re-encode images in-memory and download the file.

Frequently Asked Questions

Does text remain readable?

Yes. Text vector elements are preserved, meaning outlines remain sharp while images are compressed.

How much space will I save?

PDFs containing high-resolution images typically see a file size reduction of 50% to 80%.

Is it secure to compress confidential files?

Yes. All compression operations run locally inside your browser on-device, keeping files safe.